SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Features Applications * * * * Telecommunications Data communications Wireless communications Servers Benefits * High efficiency - no heat sink required * For output voltages ranging from 3.3 to 1.0 V, 40% higher current capability at elevated temperatures than most competitors' 20-25A quarter-bricks * Extremely small footprint: 0.896" x 2.30" (2.06 in2), 40% smaller than conventional quarter-bricks * "G" option designates RoHS for all six substances; Standard configurations are RoHS compliant with Pb solder exemption 1 * Delivers up to 15 A (50 W) * Industry-standard quarter-brick pinout * Outputs available in 12.0, 8.0, 6.0, 5.0, 3.3, 2.5, 2.0, 1.8, 1.5, 1.2, and 1.0 V * Available in through-hole and SMT packages * Lowest profile in industry: 0.258" (6.55 mm) * Lowest weight in industry: 0.53 oz (15 g) * On-board input differential LC-filter * Startup into pre-biased output * No minimum load required * Meets Basic Insulation requirements of EN60950 * Withstands 100 V input transient for 100 ms * Fixed frequency operation * Fully protected * Remote output sense * Positive or negative logic ON/OFF option * Output voltage trim range: +10%/-20% with industry-standard trim equations (except 1.2 V and 1.0 V outputs with trim range 10%) * High reliability: MTBF = 3.4 million hours, calculated per Telcordia TR-332, Method I Case 1 * UL60950 recognized in US and Canada and DEMKO certified per IEC/EN60950 * Designed to meet Class B conducted emissions per FCC and EN55022 when used with external filter * All materials meet UL94, V-0 flammability rating Description The SemiQTM Family of dc-dc converters provide a high efficiency single output in a size that is only 60% of industry-standard quarter-bricks, while preserving the same pinout and functionality. In high temperature environments, for output voltages ranging from 3.3 V to 1.0 V, the thermal performance of SemiQTM converters exceeds that of most competitors' 20-25 A quarter-bricks. This performance is accomplished through the use of patent-pending circuit, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal management, and a very low body profile. Low body profile and the preclusion of heat sinks minimize airflow shadowing, thus enhancing cooling for downstream devices. The use of 100% automation for assembly, coupled with advanced electronic circuits and thermal design, results in a product with extremely high reliability. Operating from a 36-75 V input, the SQ48 Series converters provide any standard output voltage from 12 V down to 1.0 V. Outputs can be trimmed from -20% to +10% of the nominal output voltage (10% for output voltages 1.2 V and 1.0 V), thus providing outstanding design flexibility. With a standard pinout and trim equations, the SQ48 Series converters are perfect drop-in replacements for existing quarter-brick designs. Inclusion of this converter in new designs can result in significant board space and cost savings. In both cases the designer can expect reliability improvement over other available converters because of the SQ48 Series' optimized thermal efficiency. 1 The solder exemption is for customers choosing to use the exemptions for lead in solders for servers, storage and storage array systems, and network infrastructure equipment for switching, signaling, transmission, and network management for telecommunications. REV. SEP 14, 2005 Page 1 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications (common for all versions) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, All output voltages, unless otherwise specified. Parameter Notes Min Typ Max Units 80 VDC Absolute Maximum Ratings Input Voltage Continuous 0 Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C Input Characteristics Operating Input Voltage Range 36 48 75 VDC Turn-on Threshold 33 34 35 VDC Turn-off Threshold 31 32 33 VDC 100 VDC Input Undervoltage Lockout Input Voltage Transient Non-latching 100 ms Isolation Characteristics I/O Isolation 2000 Isolation Capacitance VDC 1.0 - 3.3 V 160 pF 5.0 - 6.0 V 260 pF 8.0 - 12 V 230 Isolation Resistance pF 10 M Feature Characteristics Switching Frequency 415 Output Voltage Trim Range Industry-std. equations (1.5 - 12V) Use trim equation on Page 4 (1.0 -1.2 V) Remote Sense Compensation1 Percent of VOUT(NOM) 1 Output Overvoltage Protection -20 -10 kHz +10 +10 % % +10 % Non-latching (1.5 - 12 V) 117 122 127 % Non-latching (1.0 - 1.2 V) 124 132 140 % Auto-Restart Period Applies to all protection features Turn-On Time See Figs. F, G and H 100 ms 4 ms ON/OFF Control (Positive Logic) Converter Off (logic low) -20 0.8 VDC Converter On (logic high) 2.4 20 VDC Converter Off (logic high) 2.4 20 VDC Converter On (logic low) -20 0.8 VDC ON/OFF Control (Negative Logic) Additional Notes: 1 Vout can be increased up to 10% via the sense leads or up to 10% via the trim function. However, the total output voltage trim from all sources should not exceed 10% of VOUT(NOM), in order to ensure specified operation of overvoltage protection circuitry. REV. SEP 14, 2005 Page 2 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Operations Input and Output Impedance These power converters have been designed to be stable with no external capacitors when used in low inductance input and output circuits. In many applications, the inductance associated with the distribution from the power source to the input of the converter can affect the stability of the converter. The addition of a 33 F electrolytic capacitor with an ESR < 1 across the input helps to ensure stability of the converter. In many applications, the user has to use decoupling capacitance at the load. The power converter will exhibit stable operation with external load capacitance up to 1000 F on 12 V, 2,200 F on 8.0 V, 10,000 F on 5.0 - 6.0 V, and 15,000 F on 3.3 - 1.0 V outputs. Additionally, see the EMC section of this data sheet for discussion of other external components which may be required for control of conducted emissions. of 0.8 V. An external voltage source (20 V maximum) may be connected directly to the ON/OFF input, in which case it must be capable of sourcing or sinking up to 1 mA depending on the signal polarity. See the Startup Information section for system timing waveforms associated with use of the ON/OFF pin. Remote Sense (Pins 5 and 7) The remote sense feature of the converter compensates for voltage drops occurring between the output pins of the converter and the load. The SENSE(-) (Pin 5) and SENSE(+) (Pin 7) pins should be connected at the load or at the point where regulation is required (see Fig. B). SemiQ Family TM Vin (+) Converter (Top View) Vin ON/OFF Vout (+) Rw 100 SENSE (+) TRI M SENSE (-) Rload 10 Vin (-) Vout (-) Rw ON/OFF (Pin 2) The ON/OFF pin is used to turn the power converter on or off remotely via a system signal. There are two remote control options available, positive logic and negative logic, with both referenced to Vin(-). A typical connection is shown in Fig. A. SemiQ Family TM Vin (+) Converter (Top View) ON/OFF Vin Vout (+) SENSE (+) TRIM Rload SENSE (-) Vin (-) Vout (-) CONTROL INPUT Fig. A: Circuit configuration for ON/OFF function. The positive logic version turns on when the ON/OFF pin is at a logic high and turns off when at a logic low. The converter is on when the ON/OFF pin is left open. See Electrical Specifications for logic high/low definitions. The negative logic version turns on when the pin is at a logic low and turns off when the pin is at a logic high. The ON/OFF pin can be hardwired directly to Vin(-) to enable automatic power up of the converter without the need of an external control signal. The ON/OFF pin is internally pulled up to 5V through a resistor. A properly debounced mechanical switch, open collector transistor, or FET can be used to drive the input of the ON/OFF pin. The device must be capable of sinking up to 0.2 mA at a low level voltage REV. SEP 14, 2005 Fig. B: Remote sense circuit configuration. CAUTION If remote sensing is not utilized, the SENSE(-) pin must be connected to the Vout(-) pin (Pin 4), and the SENSE(+) pin must be connected to the Vout(+) pin (Pin 8) to ensure the converter will regulate at the specified output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher than the specified data sheet value. Because the sense leads carry minimal current, large traces on the end-user board are not required. However, sense traces should be run side by side and located close to a ground plane to minimize system noise and ensure optimum performance. When using the remote sense function, the converter's output overvoltage protection (OVP) senses the voltage across Vout(+) and Vout(-), and not across the sense lines, so the resistance (and resulting voltage drop) between the output pins of the converter and the load should be minimized to prevent unwanted triggering of the OVP. When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capability of the converter, which is equal to the product of the nominal output voltage and the allowable output current for the given conditions. When using remote sense, the output voltage at the converter can be increased by as much as 10% above the nominal rating in order to maintain the required voltage across the load. Therefore, the Page 3 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output designer must, if necessary, decrease the maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter's actual output power remains at or below the maximum allowable output power. Output Voltage Adjust /TRIM (Pin 6) The output voltage can be adjusted up 10% or down 20% for Vout 1.5 V, and 10% for Vout = 1.2 V relative to the rated output voltage by the addition of an externally connected resistor. For output voltage 3.3 V, trim up to 10% is guaranteed only at Vin 40 V, and it is marginal (8% to 10%) at Vin = 36 V. The TRIM pin should be left open if trimming is not being used. To minimize noise pickup, a 0.1 F capacitor is connected internally between the TRIM and SENSE(-) pins. To increase the output voltage, refer to Fig. C. A trim resistor, RT-INCR, should be connected between the TRIM (Pin 6) and SENSE(+) (Pin 7), with a value of: 5.11(100 + )VO-NOM - 626 - 10.22 1.225 for 1.5 - 12 V. RT-INCR = RT-INCR = 84.6 - 7.2 [k] (1.2 V) RT-INCR = 120 -9 [k] (1.0 V) [k], When trimming up, care must be taken not to exceed the converter`s maximum allowable output power. See the previous section for a complete discussion of this requirement. To decrease the output voltage (Fig. D), a trim resistor, RT-DECR, should be connected between the TRIM (Pin 6) and SENSE(-) (Pin 5), with a value of: RT-DECR = 511 - 10.22 [k] (1.5 - 12 V) RT-DECR = 700 - 15 [k] (1.2 V) RT-DECR = 700 - 17 || [k] (1.0 V) where, RT-DECR = Required value of trim-down resistor [k] and is defined above. Note: The above equations for calculation of trim resistor values match those typically used in conventional industry-standard quarterbricks and one-eighth bricks (except for 1.2 V and 1.0 V outputs). Converters with output voltages 1.2 V and 1.0 V are available with alternative trim feature to provide the customers with the flexibility of second sourcing. These converters have a "T" character in the part number. The trim equations of "T" version of converters and more information can be found in Application Note 103. SemiQ Family TM Vin (+) where, RT-INCR = Required value of trim-up resistor [k] VO-NOM = Nominal value of output voltage [V] = (Top View) Vin Vin (-) TM Converter (Top View) Vin ON/OFF Vout (+) SENSE (+) R T-INCR TRIM SENSE (-) Vin (-) Rload R T-DECR Vout (-) Rload Trimming/sensing beyond 110% of the rated output voltage is not an acceptable design practice, as this condition could cause unwanted triggering of the output overvoltage protection (OVP) circuit. The designer should ensure that the difference between the voltages across the converter's output pins and its sense pins does not exceed 10% of VOUT(NOM), or: [VOUT(+) - VOUT(-)] - [VSENSE(+) - VSENSE(-)] VO - NOM X 10% [V] Vout (-) Fig. C: Configuration for increasing output voltage. REV. SEP 14, 2005 TRIM Fig. D: Configuration for decreasing output voltage. VO-REQ = Desired (trimmed) output voltage [V]. SemiQ Family ON/OFF Vout (+) SENSE (+) SENSE (-) (VO-REQ - VO-NOM) X 100 [%] VO -NOM Vin (+) Converter This equation is applicable for any condition of output sensing and/or output trim. Page 4 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Protection Features Input Undervoltage Lockout Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage. The input voltage must be typically 34 V for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops typically below 32 V. This feature is beneficial in preventing deep discharging of batteries used in telecom applications. Output Overcurrent Protection (OCP) The converter is protected against overcurrent or short circuit conditions. Upon sensing an overcurrent condition, the converter will switch to constant current operation and thereby begin to reduce output voltage. When the output voltage drops below 50% of the nominal value of output voltage, the converter will shut down (Fig. x.17). Once the converter has shut down, it will attempt to restart nominally every 100 ms with a typical 1-2% duty cycle (Fig. x.18). The attempted restart will continue indefinitely until the overload or short circuit conditions are removed or the output voltage rises above 50% of its nominal value. Once the output current is brought back into its specified range, the converter automatically exits the hiccup mode and continues normal operation. Output Overvoltage Protection (OVP) The converter will shut down if the output voltage across Vout(+) (Pin 8) and Vout(-) (Pin 4) exceeds the threshold of the OVP circuitry. The OVP circuitry contains its own reference, independent of the output voltage regulation loop. Once the converter has shut down, it will attempt to restart every 100 ms until the OVP condition is removed. Overtemperature Protection (OTP) The converter will shut down under an overtemperature condition to protect itself from overheating caused by operation outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. After the converter has cooled to a safe operating temperature, it will automatically restart. Safety Requirements The converters meet North American and International safety regulatory requirements per UL60950 and EN60950. Basic Insulation is provided between input and output. REV. SEP 14, 2005 To comply with safety agencies' requirements, an input line fuse must be used external to the converter. The Table below provides the recommended fuse rating for use with this family of products. Output Voltage 3.3 V 12 - 5.0 V, 2.5 V 2.0 - 1.2 V Fuse Rating 4A 3A 2A All SQ converters are UL approved for a maximum fuse rating of 15 Amps. To protect a group of converters with a single fuse, the rating can be increased from the recommended values above. Electromagnetic Compatibility (EMC) EMC requirements must be met at the end-product system level, as no specific standards dedicated to EMC characteristics of board mounted component dcdc converters exist. However, Power-One tests its converters to several system level standards, primary of which is the more stringent EN55022, Information technology equipment Radio disturbance characteristics - Limits and methods of measurement. An effective internal LC differential filter significantly reduces input reflected ripple current, and improves EMC. With the addition of a simple external filter (see Application Note 100), all versions of the SQ48 Series converters pass the requirements of Class B conducted emissions per EN55022 and FCC requirements. Please contact Power-One Applications Engineering for details of this testing. Characterization General Information The converter has been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow) for vertical and horizontal mounting, efficiency, startup and shutdown parameters, output ripple and noise, transient response to load step-change, overload, and short circuit. The figures are numbered as Fig. x.y, where x indicates the different output voltages, and y associates with specific plots (y = 1 for the vertical thermal derating, ...). For example, Fig. x.1 will refer to the vertical thermal derating for all the output voltages in general. The following pages contain specific plots or waveforms associated with the converter. Additional comments for specific data are provided below. Page 5 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Test Conditions All data presented were taken with the converter soldered to a test board, specifically a 0.060" thick printed wiring board (PWB) with four layers. The top and bottom layers were not metalized. The two inner layers, comprised of two-ounce copper, were used to provide traces for connectivity to the converter. The lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from the converter to the PWB was minimized. This provides a worst-case but consistent scenario for thermal derating purposes. All measurements requiring airflow were made in the vertical and horizontal wind tunnel using Infrared (IR) thermography and thermocouples for thermometry. Ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. If one anticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to check actual operating temperatures in the application. Thermographic imaging is preferable; if this capability is not available, then thermocouples may be used. The use of AWG #40 gauge thermocouples is recommended to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to Fig. E for the optimum measuring thermocouple location. (ii) The nominal rating of the converter (4 A on 12 V, 5.3 A on 8.0 V, 8 A on 6.0 V, 10 A on 5.0 V, and 15 A on 3.3 - 1.0 V)). During normal operation, derating curves with maximum FET temperature less or equal to 120 C should not be exceeded. Temperature on the PCB at thermocouple location shown in Fig. E should not exceed 118 C in order to operate inside the derating curves. Efficiency Fig. x.5 shows the efficiency vs. load current plot for ambient temperature of 25 C, airflow rate of 300 LFM (1.5 m/s) with vertical mounting and input voltages of 36 V, 48 V and 72 V. Also, a plot of efficiency vs. load current, as a function of ambient temperature with Vin = 48 V, airflow rate of 200 LFM (1 m/s) with vertical mounting is shown in Fig. x.6. Power Dissipation Fig. x.7 shows the power dissipation vs. load current plot for Ta = 25 C, airflow rate of 300 LFM (1.5 m/s) with vertical mounting and input voltages of 36 V, 48 V and 72 V. Also, a plot of power dissipation vs. load current, as a function of ambient temperature with Vin = 48 V, airflow rate of 200 LFM (1 m/s) with vertical mounting is shown in Fig. x.8. Startup Output voltage waveforms, during the turn-on transient using the ON/OFF pin for full rated load currents (resistive load) are shown without and with external load capacitance in Fig. x.9 and Fig. x.10, respectively. Ripple and Noise Fig. x.13 shows the output voltage ripple waveform, measured at full rated load current with a 10 F tantalum and 1 F ceramic capacitor across the output. Note that all output voltage waveforms are measured across a 1 F ceramic capacitor. Fig. E: Location of the thermocouple for thermal testing. Thermal Derating Load current vs. ambient temperature and airflow rates are given in Fig. x.1 to Fig. x.4 for through-hole and surface-mount versions. Ambient temperature was varied between 25 C and 85 C, with airflow rates from 30 to 500 LFM (0.15 to 2.5 m/s), and vertical and horizontal converter mounting. The input reflected ripple current waveforms are obtained using the test setup shown in Fig x.14. The corresponding waveforms are shown in Fig. x.15 and Fig. x.16. For each set of conditions, the maximum load current was defined as the lowest of: (i) The output current at which any FET junction temperature does not exceed a maximum specified temperature (120C) as indicated by the thermographic image, or REV. SEP 14, 2005 Page 6 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output V IN Startup Information (using negative ON/OFF) Scenario #1: Initial Startup From Bulk Supply ON/OFF function enabled, converter started via application of VIN. See Figure F. Time Comments t0 ON/OFF pin is ON; system front end power is toggled on, VIN to converter begins to rise. t1 VIN crosses Undervoltage Lockout protection circuit threshold; converter enabled. t2 Converter begins to respond to turn-on command (converter turn-on delay). t3 Converter VOUT reaches 100% of nominal value. For this example, the total converter startup time (t3- t1) is typically 4 ms. ON/OFF STATE OFF ON V OUT t0 t1 t2 t t3 Fig. F: Startup scenario #1. Scenario #2: Initial Startup Using ON/OFF Pin With VIN previously powered, converter started via ON/OFF pin. See Figure G. Time Comments t0 VINPUT at nominal value. t1 Arbitrary time when ON/OFF pin is enabled (converter enabled). t2 End of converter turn-on delay. t3 Converter VOUT reaches 100% of nominal value. For this example, the total converter startup time (t3- t1) is typically 4 ms. VIN ON/OFF STATE OFF ON VOUT Scenario #3: Turn-off and Restart Using ON/OFF Pin With VIN previously powered, converter is disabled and then enabled via ON/OFF pin. See Figure H. Time Comments t0 VIN and VOUT are at nominal values; ON/OFF pin ON. t1 ON/OFF pin arbitrarily disabled; converter output falls to zero; turn-on inhibit delay period (100 ms typical) is initiated, and ON/OFF pin action is internally inhibited. t2 ON/OFF pin is externally re-enabled. If (t2- t1) 100 ms, external action of ON/OFF pin is locked out by startup inhibit timer. If (t2- t1) > 100 ms, ON/OFF pin action is internally enabled. t3 Turn-on inhibit delay period ends. If ON/OFF pin is ON, converter begins turn-on; if off, converter awaits ON/OFF pin ON signal; see Figure G. t4 End of converter turn-on delay. t5 Converter VOUT reaches 100% of nominal value. For the condition, (t2- t1) 100 ms, the total converter startup time (t5- t2) is typically 104 ms. For (t2- t1) > 100 ms, startup will be typically 4 ms after release of ON/OFF pin. t0 t 1 t2 t t3 Fig. G: Startup scenario #2. VIN 100 ms ON/OFF STATE OFF ON VOUT t0 t1 t2 t3 t4 t5 Fig. H: Startup scenario #3. REV. SEP 14, 2005 Page 7 of 64 www.power-one.com t SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S04120 (12 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 12 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 4 ADC, 12 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz Units 1.53 ADC mADC mADC mAPK-PK dB 12.000 12.120 VDC 4 4 5 5 12.180 mV mV VDC 80 120 1,000 4 5.5 10 4 mVPK-PK F ADC ADC A Arms 3 45 6 TBD 11.880 Over line, load and temperature1 Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 11.820 0 4.5 Non-latching Non-latching, Short =10 m. Non-latching 5 7.5 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 200 mV Settling Time to 1% 200 400 mV s Efficiency 100% Load 50% Load 87.0 87.0 % % di/dt = 5 A/s -40 C to 85 C. 5 5 4 4 Load Current [Adc] Load Current [Adc] 1 Co = 47 F tantalum + 1 F ceramic 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 12V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T04120 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 12V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T04120 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 8 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 5 5 4 4 Load Current [Adc] Load Current [Adc] SQ48T/S04120 (12 Volt Out) 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 12V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S04120 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 12V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S04120 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 1 2 3 4 0 5 2 3 4 5 Load Current [Adc] Load Current [Adc] Fig. 12V.5: Efficiency vs. load current and input voltage for SQ48T/S04120 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 1 Fig. 12V.6: Efficiency vs. load current and ambient temperature for SQ48T/S04120 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 9 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 10.00 10.00 8.00 8.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S04120 (12 Volt Out) 6.00 4.00 72 V 48 V 36 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0 1 2 3 4 0.00 5 0 Load Current [Adc] 2 3 4 5 Load Current [Adc] Fig. 12V.7: Power dissipation vs. load current and input voltage for SQ48T/S04120 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 12V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (5 V/div.). Time scale: 1 ms/div. REV. SEP 14, 2005 1 Fig. 12V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S04120 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 12V.10: Turn-on transient at full rated load current (resistive) plus 1,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (5 V/div.). Time scale: 2 ms/div. Page 10 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S04120 (12 Volt Out) Fig. 12V.11: Output voltage response to load current step-change (1 A - 2 A - 1 A) at Vin = 48 V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (1 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.5 ms/div. Fig. 12V.12: Output voltage response to load current step-change (1 A - 2 A - 1 A) at Vin = 48 V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (1 A/div.). Current slew rate: 5 A/s. Co = 47 F tantalum + 1 F ceramic. Time scale: 0.5 ms/div. iS 10 H source inductance Vsource Fig. 12V.13: Output voltage ripple (50 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 12V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 11 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S04120 (12 Volt Out) Fig. 12V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 12V.14 for test setup. Time scale: 1 s/div. Fig. 12V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 12V.14 for test setup. Time scale: 1 s/div. 15 Vout [Vdc] 10 5 0 0 1 2 3 4 5 6 Iout [Adc] Fig. 12V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 12V.18: Load current (top trace, 5 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (5 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 12 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S05080 (8.0 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 8.0 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 5.3 ADC, 8.0 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz 1 Units 1.38 ADC mADC mADC mAPK-PK dB 8.000 8.080 VDC 4 4 10 10 8.120 mV mV VDC 70 100 2,200 5.3 6.75 12 4 mVPK-PK F ADC ADC A Arms 3 33 6 TBD 7.920 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 7.880 0 5.75 Non-latching Non-latching, Short =10 m. Non-latching 6.25 10 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 160 mV Settling Time to 1% 160 400 mV s Efficiency 100% Load 50% Load 85.5 87.0 % % di/dt = 5 A/s -40 C to 85 C. 6 6 5 5 Load Current [Adc] Load Current [Adc] 1 Co = 94 F tantalum + 1 F ceramic 4 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 4 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 8.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T05080 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 8.0V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T05080 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 13 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 6 6 5 5 Load Current [Adc] Load Current [Adc] SQ48T/S05080 (8.0 Volt Out) 4 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 4 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 8.0V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S05080 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 8.0V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S05080 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 1 2 3 4 5 0 6 2 3 4 5 6 Load Current [Adc] Load Current [Adc] Fig. 8.0V.5: Efficiency vs. load current and input voltage for SQ48T/S05080 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 1 Fig. 8.0V.6: Efficiency vs. load current and ambient temperature for SQ48T/S05080 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 14 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 10.00 10.00 8.00 8.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S05080 (8.0 Volt Out) 6.00 4.00 72 V 48 V 36 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0.00 0 1 2 3 4 5 6 0 Load Current [Adc] 2 3 4 5 6 Load Current [Adc] Fig. 8.0V.7: Power dissipation vs. load current and input voltage for SQ48T/S05080 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 8.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 1 ms/div. REV. SEP 14, 2005 1 Fig. 8.0V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S05080 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 8.0V.10: Turn-on transient at full rated load current (resistive) plus 2,200 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. Page 15 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S05080 (8.0 Volt Out) Fig. 8.0V.11: Output voltage response to load current step-change (1.325 A - 2.65 A - 1.325 A) at Vin = 48 V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (1 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.5 ms/div. Fig. 8.0V.12: Output voltage response to load current step-change (1.325 A - 2.65 A - 1.325 A) at Vin = 48 V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (1 A/div.). Current slew rate: 5 A/s. Co = 94 F tantalum + 1 F ceramic. Time scale: 0.5 ms/div. iS 10 H source inductance Vsource Fig. 8.0V.13: Output voltage ripple (50 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 8.0V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 16 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S05080 (8.0 Volt Out) Fig. 8.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 8.0V.14 for test setup. Time scale: 1 s/div. Fig. 8.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 8.0V.14 for test setup. Time scale: 1 s/div. 12 Vout [Vdc] 8 4 0 0 2 4 6 8 Iout [Adc] Fig. 8.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 8.0V.18: Load current (top trace, 5 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (5 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 17 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S08060 (6.0 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 6.0 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 8 ADC, 6.0 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz 1 Units 1.5 ADC mADC mADC mAPK-PK dB 6.000 6.060 VDC 2 2 5 5 6.090 mV mV VDC 45 60 mVPK-PK 10,000 F 8 ADC 11.5 ADC 25 A 5.3 Arms 3 45 6 TBD 5.940 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 5.910 0 8.4 Non-latching Non-latching, Short =10 m. Non-latching 10 15 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 100 mV Settling Time to 1% 80 200 mV s Efficiency 100% Load 50% Load 89.0 89.0 % % di/dt = 5 A/s -40 C to 85 C. 10 10 8 8 Load Current [Adc] Load Current [Adc] 1 Co = 450 F tantalum + 1 F ceramic 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 6.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T08060 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 6.0V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T08060 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 18 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 10 10 8 8 Load Current [Adc] Load Current [Adc] SQ48T/S08060 (6.0 Volt Out) 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 6.0V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S08060 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 6.0V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S08060 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 0 10 4 6 8 10 Load Current [Adc] Load Current [Adc] Fig. 6.0V.5: Efficiency vs. load current and input voltage for SQ48T/S08060 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 6.0V.6: Efficiency vs. load current and ambient temperature for SQ48T/S08060 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 19 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 8.00 8.00 6.00 6.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S08060 (6.0 Volt Out) 4.00 72 V 48 V 36 V 2.00 0.00 0 2 4 6 8 70 C 55 C 40 C 2.00 0.00 10 0 Load Current [Adc] 2 4 6 8 10 Load Current [Adc] Fig. 6.0V.7: Power dissipation vs. load current and input voltage for SQ48T/S08060 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 6.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 4.00 Fig. 6.0V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S08060 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 6.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 5 ms/div. Page 20 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S08060 (6.0 Volt Out) Fig. 6.0V.11: Output voltage response to load current step-change (2 A - 4 A - 2 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (2 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 6.0V.12: Output voltage response to load current step-change (2 A - 4 A - 2 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (2 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 6.0V.13: Output voltage ripple (50 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 6.0V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 21 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S08060 (6.0 Volt Out) Fig. 6.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 6.0V.14 for test setup. Time scale: 1 s/div. Fig. 6.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 6.0V.14 for test setup. Time scale: 1 s/div. 8 Vout [Vdc] 6 4 2 0 0 3 6 9 12 Iout [Adc] Fig. 6.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 6.0V.18: Load current (top trace, 10 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (10 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 22 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S10050 (5.0 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 5.0 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 10 ADC, 5.0 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz 1 Units 1.65 ADC mADC mADC mAPK-PK dB 5.000 5.050 VDC 2 2 5 5 5.075 mV mV VDC 45 80 mVPK-PK 10,000 F 10 ADC 14 ADC 30 A 5.3 Arms 2.6 40 6 TBD 4.950 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 4.925 0 10.5 Non-latching Non-latching, Short =10 m. Non-latching 12.5 20 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 200 mV Settling Time to 1% 180 400 mV s Efficiency 100% Load 50% Load 87.0 88.0 % % di/dt = 5 A/s -40 C to 85 C. 12 12 10 10 Load Current [Adc] Load Current [Adc] 1 Co = 450 F tantalum + 1 F ceramic 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 5.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T10050 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 5.0V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T10050 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 23 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 12 12 10 10 Load Current [Adc] Load Current [Adc] SQ48T/S10050 (5.0 Volt Out) 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 5.0V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S10050 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 5.0V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S10050 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 0 12 4 6 8 10 12 Load Current [Adc] Load Current [Adc] Fig. 5.0V.5: Efficiency vs. load current and input voltage for SQ48T/S10050 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 5.0V.6: Efficiency vs. load current and ambient temperature for SQ48T/S10050 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 24 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 10.00 10.00 8.00 8.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S10050 (5.0 Volt Out) 6.00 4.00 72 V 48 V 36 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0 2 4 6 8 10 0.00 12 0 Load Current [Adc] 4 6 8 10 12 Load Current [Adc] Fig. 5.0V.7: Power dissipation vs. load current and input voltage for SQ48T/S10050 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 5.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 5.0V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S10050 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 5.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. Page 25 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S10050 (5.0 Volt Out) Fig. 5.0V.11: Output voltage response to load current step-change (2.5 A - 5 A - 2.5 A) at Vin = 48 V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (2 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 5.0V.12: Output voltage response to load current step-change (2.5 A - 5 A - 2.5 A) at Vin = 48 V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (2 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 5.0V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 5.0V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 26 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S10050 (5.0 Volt Out) Fig. 5.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 5.0V.14 for test setup. Time scale: 1 s/div. Fig. 5.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 5.0V.14 for test setup. Time scale: 1 s/div. 6 5 Vout [Vdc] 4 3 2 1 0 0 5 10 15 Iout [Adc] Fig. 5.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 5.0V.18: Load current (top trace, 10 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (10 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 27 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15033 (3.3 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 3.3 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 3.3 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz 1 Units 1.6 ADC mADC mADC mAPK-PK dB 3.300 3.333 VDC 2 2 5 5 3.350 mV mV VDC 30 50 mVPK-PK 15,000 F 15 ADC 20 ADC 40 A 5.3 Arms 2.6 42 6 TBD 3.267 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 3.250 0 15.75 Non-latching Non-latching, Short =10 m. Non-latching 18 30 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 80 mV Settling Time to 1% 140 100 mV s Efficiency 100% Load 50% Load 89.5 89.5 % % di/dt = 5 A/s -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 Co = 450 F POS + 1 F ceramic 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 3.3V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15033 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 3.3V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15033 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 28 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15033 (3.3 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 3.3V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15033 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 3.3V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15033 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 3.3V.5: Efficiency vs. load current and input voltage for SQ48T/S15033 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 3.3V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15033 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 29 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 8.00 8.00 6.00 6.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15033 (3.3 Volt Out) 4.00 72 V 48 V 36 V 2.00 0.00 0 2 4 6 8 10 12 14 70 C 55 C 40 C 2.00 0.00 16 0 Load Current [Adc] 2 4 6 8 10 12 14 16 Load Current [Adc] Fig. 3.3V.7: Power dissipation vs. load current and input voltage for SQ48T/S15033 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 3.3V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 4.00 Fig. 3.3V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15033 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 3.3V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. Page 30 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15033 (3.3 Volt Out) Fig. 3.3V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 3.3V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 3.3V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 3.3V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 31 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15033 (3.3 Volt Out) Fig. 3.3V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 3.3V.14 for test setup. Time scale: 1 s/div. Fig. 3.3V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 3.3V.14 for test setup. Time scale: 1 s/div. 4 Vout [Vdc] 3 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 3.3V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 3.3V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 32 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15025 (2.5 Volt Out) Conditions: TA = 25C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 2.5 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 2.5 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz Units 1.2 ADC mADC mADC mAPK-PK dB 2.500 2.525 VDC 2 2 5 5 2.538 mV mV VDC 30 50 15,000 15 20 40 5.3 mVPK-PK F ADC ADC A Arms 2.6 34 6 TBD 2.475 Over line, load and temperature1 Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 2.462 0 15.75 Non-latching Non-latching, Short =10 m. Non-latching 18 30 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 120 mV Settling Time to 1% 120 100 mV s Efficiency 100% Load 50% Load 87.0 87.5 % % di/dt = 5 A/s -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 Co = 450 F POS + 1 F ceramic 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 2.5V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15025 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 2.5V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15025 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 33 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15025 (2.5 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 2.5V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15025 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 2.5V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15025 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 2.5V.5: Efficiency vs. load current and input voltage for SQ48T/S15025 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 2.5V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15025 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 34 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 8.00 8.00 6.00 6.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15025 (2.5 Volt Out) 4.00 72 V 48 V 36 V 2.00 0.00 4.00 70 C 55 C 40 C 2.00 0.00 0 2 4 6 8 10 12 14 16 0 Load Current [Adc] 4 6 8 10 12 14 16 Load Current [Adc] Fig. 2.5V.7: Power dissipation vs. load current and input voltage for SQ48T/S15025 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 2.5V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 2.5V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15025 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 2.5V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. Page 35 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15025 (2.5 Volt Out) Fig. 2.5V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 2.5V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 2.5V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 2.5V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 36 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15025 (2.5 Volt Out) Fig. 2.5V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 2.5V.14 for test setup. Time scale: 1 s/div. Fig. 2.5V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 2.5V.14 for test setup. Time scale: 1 s/div. 3 Vout [Vdc] 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 2.5V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 2.5V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 37 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15020 (2.0 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 2.0 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 2.0 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz 1 0 15.75 ADC mADC mADC mAPK-PK dB 2.000 2.02 VDC 2 2 5 5 2.030 mV mV VDC 30 50 mVPK-PK 15,000 F 15 ADC 20 ADC 40 A 5.3 Arms 18 30 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic Co = 450 F POS + 1 F ceramic Settling Time to 1% Efficiency 100% Load 50% Load 80 mV 60 60 mV s 86.5 87.0 % % -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 1.0 1.970 Non-latching Non-latching, Short =10 m. Non-latching di/dt = 5 A/s Units 3 31 6 TBD 1.98 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 2.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15020 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 2.0V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15020 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 38 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15020 (2.0 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 2.0V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15020 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 2.0V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15020 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 2.0V.5: Efficiency vs. load current and input voltage for SQ48T/S15020 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 2.0V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15020 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 39 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 6.00 6.00 5.00 5.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15020 (2.0 Volt Out) 4.00 3.00 2.00 72 V 48 V 36 V 1.00 4.00 3.00 2.00 70 C 55 C 40 C 1.00 0.00 0.00 0 2 4 6 8 10 12 14 16 0 Load Current [Adc] 4 6 8 10 12 14 16 Load Current [Adc] Fig. 2.0V.7: Power dissipation vs. load current and input voltage for SQ48T/S15020 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 2.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 2.0V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15020 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 2.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. Page 40 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15020 (2.0 Volt Out) Fig. 2.0V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 2.0V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 2.0V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 2.0V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 41 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15020 (2.0 Volt Out) Fig. 2.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 2.0V.14 for test setup. Time scale: 1 s/div. Fig. 2.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 2.0V.14 for test setup. Time scale: 1 s/div. 3 Vout [Vdc] 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 2.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 2.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 42 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15018 (1.8 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 1.8 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 1.8 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz Units 0.9 ADC mADC mADC mAPK-PK dB 1.800 1.818 VDC 2 2 4 5 1.827 mV mV VDC 30 50 mVPK-PK 15,000 F 15 ADC 20 ADC 40 A 5.3 Arms 2.6 29 6 TBD 1.782 Over line, load and temperature1 Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 1.773 0 15.75 Non-latching Non-latching, Short =10 m. Non-latching 18 30 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 80 mV Settling Time to 1% 100 100 mV s Efficiency 100% Load 50% Load 85.5 86.0 % % di/dt = 5 A/s -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 Co = 450 F POS + 1 F ceramic 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 1.8V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15018 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 1.8V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15018 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 43 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15018 (1.8 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.8V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15018 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 1.8V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15018 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.8V.5: Efficiency vs. load current and input voltage for SQ48T/S15018 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 1.8V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15018 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 44 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 6.00 6.00 5.00 5.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15018 (1.8 Volt Out) 4.00 3.00 2.00 72 V 48 V 36 V 1.00 4.00 3.00 2.00 70 C 55 C 40 C 1.00 0.00 0 2 4 6 8 10 12 14 0.00 16 0 Load Current [Adc] 4 6 8 10 12 14 16 Load Current [Adc] Fig. 1.8V.7: Power dissipation vs. load current and input voltage for SQ48T/S15018 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 1.8V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 1.8V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15018 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 1.8V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. Page 45 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15018 (1.8 Volt Out) Fig. 1.8V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.8V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 1.8V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 1.8V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 46 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15018 (1.8 Volt Out) Fig. 1.8V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 1.8V.14 for test setup. Time scale: 1 s/div. Fig. 1.8V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 1.8V.14 for test setup. Time scale: 1 s/div. 3 Vout [Vdc] 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 1.8V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 1.8V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 47 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15015 (1.5 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 1.5 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 1.5 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz Units 0.75 ADC mADC mADC mAPK-PK dB 1.500 1.515 VDC 2 2 4 4 1.523 mV mV VDC 30 50 mVPK-PK 15,000 F 15 ADC 20 ADC 40 A 5.3 Arms 2.6 25 6 TBD 1.485 Over line, load and temperature1 Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 1.477 0 15.75 Non-latching Non-latching, Short =10 m. Non-latching 18 30 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 80 mV Settling Time to 1% 120 100 mV s Efficiency 100% Load 50% Load 84.5 85.0 % % di/dt = 5 A/s -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 Co = 450 F POS + 1 F ceramic 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 1.5V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15015 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C REV. SEP 14, 2005 30 Fig. 1.5V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15015 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 48 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15015 (1.5 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 Ambient Temperature [C] Fig. 1.5V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15015 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 60 70 80 90 Fig. 1.5V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15015 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency 50 Ambient Temperature [C] 0.80 0.75 0.80 0.75 72 V 48 V 36 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.5V.5: Efficiency vs. load current and input voltage for SQ48T/S15015 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 1.5V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15015 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 49 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 6.00 6.00 5.00 5.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15015 (1.5 Volt Out) 4.00 3.00 2.00 72 V 48 V 36 V 1.00 4.00 3.00 2.00 70 C 55 C 40 C 1.00 0.00 0.00 0 2 4 6 8 10 12 14 16 0 Load Current [Adc] 4 6 8 10 12 14 16 Load Current [Adc] Fig. 1.5V.7: Power dissipation vs. load current and input voltage for SQ48T/S15015 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 1.5V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 1.5V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15015 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 1.5V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 2 ms/div. Page 50 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15015 (1.5 Volt Out) Fig. 1.5V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.5V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 1.5V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 1.5V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 51 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15015 (1.5 Volt Out) Fig. 1.5V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 1.5V.14 for test setup. Time scale: 1 s/div. Fig. 1.5V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 1.5V.14 for test setup. Time scale: 1 s/div. 2.0 Vout [Vdc] 1.5 1.0 0.5 0 0 5 10 15 20 Iout [Adc] Fig. 1.5V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 1.5V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 52 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15012 (1.2 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 1.2 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 1.2 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz Units 0.62 ADC mADC mADC mAPK-PK dB 1.200 1.212 VDC 1 1 3 3 1.218 mV mV VDC 30 50 mVPK-PK 15,000 F 15 ADC 20 ADC 40 A 5.3 Arms 2.6 22 6 TBD 1.188 Over line, load and temperature1 Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) Max 1.182 0 15.75 Non-latching Non-latching, Short =10 m. Non-latching 18 30 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic 90 mV Settling Time to 1% 120 100 mV s Efficiency 100% Load 50% Load 82.0 83.0 % % di/dt = 5 A/s -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 Co = 450 F tantalum + 1 F ceramic 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 1.2V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15012 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 1.2V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15012 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 53 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15012 (1.2 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 Ambient Temperature [C] Fig. 1.2V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15012 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 60 70 80 90 Fig. 1.2V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15012 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.90 0.90 0.85 0.85 0.80 0.80 Efficiency Efficiency 50 Ambient Temperature [C] 0.75 0.70 0.75 0.70 72 V 48 V 36 V 70 C 55 C 40 C 0.65 0.65 0.60 0.60 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.2V.5: Efficiency vs. load current and input voltage for SQ48T/S15012 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 1.2V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15012 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 54 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 5.00 5.00 4.00 4.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15012 (1.2 Volt Out) 3.00 2.00 72 V 48 V 36 V 1.00 3.00 2.00 70 C 55 C 40 C 1.00 0.00 0.00 0 2 4 6 8 10 12 14 16 0 Load Current [Adc] 4 6 8 10 12 14 16 Load Current [Adc] Fig. 1.2V.7: Power dissipation vs. load current and input voltage for SQ48T/S15012 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 1.2V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 1.2V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15012 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 1.2V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 2 ms/div. Page 55 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15012 (1.2 Volt Out) Fig. 1.2V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.2V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 1.2V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 1.2V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 56 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15012 (1.2 Volt Out) Fig. 1.2V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 1.2V.14 for test setup. Time scale: 1 s/div. Fig. 1.2V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 1.2V.14 for test setup. Time scale: 1 s/div. 1.5 Vout [Vdc] 1.0 0.5 0 0 5 10 15 20 Iout [Adc] Fig. 1.2V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 1.2V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 57 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Electrical Specifications: SQ48T/S15010 (1.0 Volt Out) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Vout = 1.0 VDC, unless otherwise specified. Parameter Notes Input Characteristics Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection Output Characteristics Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25 MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current Min Typ 15 ADC, 1.0 VDC Out @ 36 VDC In Vin = 48 V, converter disabled Vin = 48 V, converter enabled 25 MHz bandwidth 120 Hz Max Units 0.52 ADC mADC mADC mAPK-PK dB 1.000 1.010 VDC 1 2 1 3 mV mV VDC 3 22 7.5 TBD 0.990 Over line, load and temperature1 Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 0.985 Non-latching Non-latching, Short =10 m. Non-latching 15.75 1.015 30 50 15,000 0 15 18 30 40 5.3 Dynamic Response Load Change 25% of Iout Max, di/dt = 0.1 A/s Co = 1 F ceramic di/dt = 5 A/s 20 Co = 450 F tantalum + 1 F ceramic 80 mV 140 mV s Settling Time to 1% 100 Efficiency 100% Load 50% Load 80.5 % % 81.0 -40 C to 85 C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 1 mVPK-PK F ADC ADC A Arms 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 1.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ48T15010 converter with D height pins mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. REV. SEP 14, 2005 30 Fig. 1.0V.2: Available load current vs. ambient air temperature and airflow rates for SQ48T15010 converter with D height pins mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Page 58 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] SQ48T/S15010 (1.0 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 40 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.0V.3: Available load current vs. ambient air temperature and airflow rates for SQ48S15010 converter mounted vertically with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. Fig. 1.0V.4: Available load current vs. ambient air temperature and airflow rates for SQ48S15010 converter mounted horizontally with Vin = 48 V, air flowing from pin 3 to pin 1, and maximum FET temperature 120 C. 0.90 0.90 0.85 0.85 0.80 0.80 Efficiency Efficiency 50 0.75 0.70 0.75 0.70 72 V 48 V 36 V 70 C 55 C 40 C 0.65 0.65 0.60 0.60 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.0V.5: Efficiency vs. load current and input voltage for SQ48T/S15010 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. REV. SEP 14, 2005 2 Fig. 1.0V.6: Efficiency vs. load current and ambient temperature for SQ48T/S15010 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 59 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output 5.00 5.00 4.00 4.00 Power Dissipation [W] Power Dissipation [W] SQ48T/S15010 (1.0 Volt Out) 3.00 2.00 72 V 48 V 36 V 1.00 3.00 2.00 70 C 55 C 40 C 1.00 0.00 0.00 0 2 4 6 8 10 12 14 16 0 Load Current [Adc] 4 6 8 10 12 14 16 Load Current [Adc] Fig. 1.0V.7: Power dissipation vs. load current and input voltage for SQ48T/S15010 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C. Fig. 1.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 2 ms/div. REV. SEP 14, 2005 2 Fig. 1.0V.8: Power dissipation vs. load current and ambient temperature for SQ48T/S15010 converter mounted vertically with Vin = 48 V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 1.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 2 ms/div. Page 60 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15010 (1.0 Volt Out) Fig. 1.0V.11: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.0V.12: Output voltage response to load current step-change (3.75 A - 7.5 A - 3.75 A) at Vin = 48 V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. iS 10 H source inductance Vsource Fig. 1.0V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 1 s/div. REV. SEP 14, 2005 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC-DC Converter 1 F ceramic capacitor Vout Fig. 1.0V.14: Test Setup for measuring input reflected ripple currents, ic and is. Page 61 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output SQ48T/S15010 (1.0 Volt Out) Fig. 1.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 1.0V.14 for test setup. Time scale: 1 s/div. Fig. 1.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 48 V. Refer to Fig. 1.0V.14 for test setup. Time scale: 1 s/div. 1.5 Vout [Vdc] 1.0 0.5 0 0 5 10 15 20 Iout [Adc] Fig. 1.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. REV. SEP 14, 2005 Fig. 1.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 62 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Physical Information SQ48S Platform Notes * * * * * 8 1 7 2 TOP VIEW 6 5 3 4 All dimensions are in inches [mm] Connector Material: Copper Connector Finish: Gold over Nickel Converter Weight: 0.66 oz [18.5 g] Recommended Surface-Mount Pads: Min. 0.080" X 0.112" [2.03 x 2.84] Max. 0.092" X 0.124" [2.34 x 3.15] SIDE VIEW Pad/Pin Connections Pad/Pin # 1 2 3 4 5 6 7 8 SQ48S Pinout (Surface Mount) Function Vin (+) ON/OFF Vin (-) Vout (-) SENSE(-) TRIM SENSE(+) Vout (+) 8 1 7 2 TOP VIEW 6 5 3 4 SQ48T Platform Notes SIDE VIEW * * * * * SQ48T Pinout (Through-hole) * Height Option A B C D E HT (Max. Height) +0.000 [+0.00] -0.038 [- 0.97] 0.303 [7.69] 0.336 [8.53] 0.500 [12.70] 0.400 [10.16] 0.282 [7.16] REV. SEP 14, 2005 CL (Min. Clearance) +0.016 [+0.41] -0.000 [- 0.00] 0.030 [0.77] 0.063 [1.60] 0.227 [5.77] 0.127 [3.23] 0.009 [0.23] Pin Option A B C All dimensions are in inches [mm] Pins 1-3 and 5-7 are O 0.040" [1.02] with O 0.078" [1.98] shoulder Pins 4 and 8 are O 0.062" [1.57] without shoulder Pin material: Brass Pin Finish: Tin/Lead over Nickel or Matte Tin over Nickel for "G" version Converter Weight: 0.53 oz [15 g] PL Pin Length 0.005 [0.13] 0.188 [4.77] 0.145 [3.68] 0.110 [2.79] Page 63 of 64 www.power-one.com SQ48 DC-DC Series Data Sheet 36-75 VDC Input; 1.0-12 VDC Output Converter Part Numbering Ordering Information Product Series Input Voltage Mounting Scheme Rated Load Current Output Voltage SQ 48 T 15 012 15 15 A (1.0 - 3.3 V) OneEighth Brick Format S Surface Mount 36-75 V T Throughhole 10 10 A (5.0 V) 08 8 A (6.0 V) 05 5.3 A (8.0 V) 04 4 A (12.0 V) - 010 1.0 V 012 1.2 V 015 1.5 V 018 1.8 V 020 2.0 V 025 2.5 V 033 3.3 V 050 5.0 V 060 6.0 V 080 8.0 V 120 12.0 V ON/OFF Logic Maximum Height [HT] Pin Length [PL] Special Features N B A 0 SMT S 0.273" SMT 0 0.00" 0 STD Through hole A 0.188" B 0.145" C 0.110" T Alternative Trim Option (For 1.2 V, 1.0 V only) N Negative P Positive Through hole A 0.303" B 0.336" C 0.500" D 0.400" E 0.282" Environmental G RoHS Compliant with Pb free solder The example above describes P/N SQ48T15012-NBA0: 36-75 V input, through-hole mounting, 15 A @ 1.2 V output, negative ON/OFF logic, 1 a maximum height of 0.336", a through the board pin length of 0.188", standard trim equations, and Eutectic Tin/Lead solder . Please consult factory for the complete list of available options. 1 The solder exemption is for customers choosing to use the exemptions for lead in solders for servers, storage and storage array systems, and network infrastructure equipment for switching, signaling, transmission, and network management for telecommunications. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. REV. SEP 14, 2005 Page 64 of 64 www.power-one.com