YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Member of the Applications Intermediate Bus Architectures Distributed Power Architectures Data communications Telecommunications Servers, workstations Benefits High efficiency - no heat sink required Reduces total solution board area Tape and reel packing Compatible with pick &place equipment Minimizes part numbers in inventory Low cost Family Features RoHS lead free and lead-solder-exempted products are available Delivers up to 5 A (28 W) Extended input range 9.6 V - 14 V No derating up to 85 C (70 C for 5V and 3.3V) Surface-mount package Industry-standard footprint and pinout Small size and low profile: 0.80" x 0.45" x 0.247" (20.32 x 11.43 x 6.27mm) Weight: 0.079 oz [2.26 g] Co-planarity < 0.003" Synchronous Buck Converter topology Start-up into pre-biased output No minimum load required Programmable output voltage via external resistor Operating ambient temperature: -40 C to 85 C Remote ON/OFF Fixed frequency operation Auto-reset output overcurrent protection Auto-reset overtemperature protection High reliability, MTBF approx. 71.8 Million Hours calculated per Telcordia TR-332, Method I Case 1 All materials meet UL94, V-0 flammability rating UL 60950 recognition in U.S. & Canada, and DEMKO certification per IEC/EN 60950 Description Power-One's point-of-load converters are recommended for use with regulated bus converters in an Intermediate Bus Architecture (IBA). The YM12S05 non-isolated DC-DC converters deliver up to 5A of output current in an industry-standard surface-mount package. Operating from a 9.6-14 VDC input, the YM12S05 converters are ideal choices for Intermediate Bus Architectures where Point-of-Load power (POL) delivery is generally a requirement. They provide an extremely tight regulated programmable output voltage of 0.7525 V to 5.5 V. The Y-Series converters provide exceptional thermal performance, even in high temperature environments with minimal airflow. No derating is required up to 85 C (up to 70 C for 5 V and 3.3 V outputs), even without airflow at natural convection. This is accomplished through the use of advanced circuitry, packaging and processing techniques to achieve a design possessing ultra-high efficiency, excellent thermal management and a very low body profile. The low body profile and the preclusion of heat sinks minimize impedance to system airflow, thus enhancing cooling for both upstream and downstream devices. The use of 100% automation for assembly, coupled with advanced power electronics and thermal design, results in a product with extremely high reliability. MCD10132 Rev. 1.1, 21-Jun-10 Page 1 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Electrical Specifications Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=12VDC, Vout = 0.7525 - 5.5V, unless otherwise specified. Parameter Notes Min Typ Max Units Absolute Maximum Ratings Input Voltage -0.3 15 VDC Operating Ambient Temperature Continuous -40 85 C Storage Temperature -55 125 C Feature Characteristics Switching Frequency Output Voltage Trim Range1 310 By external resistor, See Trim Table 1 0.7525 Turn-On Delay Time Full resistive load With Vin = (Converter Enabled, then Vin applied) From Vin = Vin(min) to Vo=0.1* Vo(nom) With Enable (Vin = Vin(nom) applied, then enabled) From enable to Vo= 0.1*Vo(nom) Rise time (Full resistive load) From 0.1*Vo(nom) to 0.9*Vo(nom) kHz 5.5 VDC 7.5 ms 7.5 ms 7 ms ON/OFF Control 2 Converter Off 2.4 Vin VDC Converter On -5 0.8 VDC Additional Notes: 1. The output voltage should not exceed 5.5V. 2. The converter is on if the ON/OFF pin is left open. MCD10132 Rev. 1.1, 21-Jun-10 Page 2 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Electrical Specifications (continued) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=12VDC, Vout = 0.7525 - 5.5V, unless otherwise specified. Parameter Notes Min Typ Max Units 9.6 12 14 VDC Input Characteristics Operating Input Voltage Range Input Under Voltage Lockout Turn-on Threshold 9.0 VDC Turn-off Threshold 8.8 VDC Maximum Input Current Input Stand-by Current (Converter disabled) Input No Load Current (Converter enabled) Input Reflected-Ripple Current - is Input Voltage Ripple Rejection MCD10132 Rev. 1.1, 21-Jun-10 5 ADC Out @ 9.6 VDC In VOUT = 5.0 VDC 2.9 ADC VOUT = 3.3 VDC 2.0 ADC VOUT = 2.5 VDC 1.6 ADC VOUT = 2.0 VDC 1.4 ADC VOUT = 1.8 VDC 1.25 ADC VOUT = 1.5 VDC 1.0 ADC VOUT = 1.2 VDC 0.8 ADC VOUT = 1.0 VDC 0.7 ADC VOUT = 5.0 VDC 65 1 mA mA VOUT = 3.3 VDC 47 mA VOUT = 2.5 VDC 35 mA VOUT = 2.0 VDC 28 mA VOUT = 1.8 VDC 25 mA VOUT = 1.5 VDC 20 mA VOUT = 1.2 VDC 17 mA VOUT = 1.0 VDC 15 mA VOUT = 5.0 VDC 55 mAP-P VOUT = 3.3 VDC 48 mAP-P VOUT = 2.5 VDC 43 mAP-P VOUT = 2.0 VDC 38 mAP-P VOUT = 1.8 VDC 35 mAP-P VOUT = 1.5 VDC 32 mAP-P VOUT = 1.2 VDC 28 mAP-P VOUT = 1.0 VDC 25 mAP-P 120Hz 72 dB See Fig. D for setup. (BW=20MHz) Page 3 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Electrical Specifications (continued) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=12VDC, Vout = 0.7525 - 5.5V, unless otherwise specified. Parameter Notes Min Typ Max Units -1.5 Vout +1.5 %Vout Output Characteristics Output Voltage Set Point (no load) 1 Output Regulation Over Line Full resistive load Over Load Output Voltage Range (Over all operating input voltage, resistive load and temperature conditions until end of life ) From no load to full load Output Ripple and Noise - 20MHz bandwidth Over line, load and temperature (Fig. D) 1 mV 0.25 %Vout -2.5 +2.5 %Vout Peak-to-Peak VOUT = 5.0 VDC 55 70 mVP-P Peak-to-Peak VOUT = 0.7525 VDC 40 50 mVP-P 1,000 F 2,000 F 5 A External Load Capacitance Plus full load (resistive) Min ESR > 1m Min ESR > 10 m Output Current Range 0 Output Current Limit Inception (IOUT) Output Short- Circuit Current 10 A 2 Arms Co = 47 F ceramic. + 1 F ceramic 100 mV 20 s Co = 47 F ceramic + 1 F ceramic 100 mV 20 s VOUT = 5.0 VDC 92.0 % VOUT = 3.3 VDC 88.5 % VOUT = 2.5 VDC 86.5 % VOUT = 2.0 VDC 84.5 % VOUT = 1.8 VDC 83.5 % VOUT = 1.5 VDC 81.5 % VOUT = 1.2 VDC 79.0 % VOUT = 1.0 VDC 76.0 % Short=10 m, continuous Dynamic Response Iout step from 2.5A to 5A with di/dt = 5 A/S Settling Time (VOUT < 10% peak deviation) Iout step from 5A to 2.5A with di/dt = -5 A/S Settling Time (VOUT < 10% peak deviation) Efficiency Full load (5A) Additional Notes: 1. Trim resistor connected across the GND and TRIM pins of the converter. MCD10132 Rev. 1.1, 21-Jun-10 Page 4 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A add a pull-up resistor (R*) of 75K to Vin as shown in Fig. A. Operations Input and Output Impedance The Y-Series converter should be connected via a low impedance to the DC power source. 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. It is recommended to use decoupling capacitors (minimum 47F) placed as close as possible to the converter input pins in order to ensure stability of the converter and reduce input ripple voltage. Internally, the converter has 10F (low ESR ceramics) of input capacitance. In a typical application, low - ESR tantalum or POS capacitors will be sufficient to provide adequate ripple voltage filtering at the input of the converter. However, very low ESR ceramic capacitors 47F100F are recommended at the input of the converter in order to minimize the input ripple voltage. They should be placed as close as possible to the input pins of the converter. The YM12S05 has been designed for stable operation with no external capacitance on the output. It is recommended to place low ESR ceramic capacitors to minimize output ripple voltage. Low ESR ceramic capacitors placed as close as possible to the load are recommended for improved transient performance and lower output voltage ripple. It is important to keep low resistance and low inductance PCB traces for connecting your load to the output pins of the converter. This is required to maintain good load regulation since the converter does not have a SENSE pin for compensating voltage drops associated with the power distribution system on your PCB. Vin R* The ON/OFF pin is internally pulled-down. A TTL or CMOS logic gate, open collector (open drain) transistor can be used to drive the ON/OFF pin. When using open collector (open drain) transistor, MCD10132 Rev. 1.1, 21-Jun-10 (Top View) Vin Rload GND TRIM CONTROL INPUT Fig. A: Circuit configuration for ON/OFF function. This device must be capable of: - sinking up to 0.2 mA at a low level voltage of 0.8 V - sourcing up to 0.25 mA at a high logic level of 2.3V - 5V - sourcing up to 0.75 mA when connected to Vin. Output Voltage Programming (Pin 3) The output voltage can be programmed from 0.7525V to 5.5V by connecting an external resistor between TRIM pin (Pin 3) and GND pin (Pin 4); see Fig. B. Note that when trim resistor is not connected, output voltage of the converter is 0.7525V. A trim resistor, RTRIM, for a desired output voltage can be calculated using the following equation: RTRIM 10.5 1 (VO -REQ - 0.7525) [k] where, RTRIM Required value of trim resistor [k] VOREQ Desired (trimmed) output voltage [V] Vin To turn the converter on the ON/OFF pin should be at logic low or left open, and to turn the converter off the ON/OFF pin should be at logic high or connected to Vin. Vout ON/OFF ON/OFF (Pin 1) The ON/OFF pin (Pin 1) is used to turn the power converter on or off remotely via a system signal that is referenced to GND (Pin 4). The typical connections are shown in Fig. A. Y-Series Converter Y-Series Converter Vout (Top View) ON/OFF Vin Rload GND TRIM RTRIM Fig. B: Configuration for programming output voltage. Note that the tolerance of a trim resistor directly affects the output voltage tolerance. It is recommended to use standard 1% or 0.5% resistors; for tighter tolerance, two resistors in parallel are recommended rather than one standard value from Table 1. Page 5 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Ground pin of the trim resistor should be connected directly to the converter GND pin with no voltage drop in between. Table 1 provides the trim resistor values for popular output voltages. Table 1: Trim Resistor Value The Closest V0-REG [V] RTRIM [k] Standard Value [k] open 0.7525 41.42 41.2 1.0 22.46 22.6 1.2 13.05 13.0 1.5 9.02 9.09 1.8 7.42 7.50 2.0 5.01 4.99 2.5 3.12 3.09 3.3 1.47 1.47 5.0 1.21 1.21 5.5 (1 REXT)(VO -REQ - 0.7525) 15 where VCTRL Control voltage [V] REXT External resistor between TRIM pin and voltage source; the value can be chosen depending on the required output voltage range [k]. Control voltages with REXT 0 and REXT 15K are shown in Table 2. MCD10132 Rev. 1.1, 21-Jun-10 Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage; it will start automatically when Vin returns to a specified range. Output Overcurrent Protection (OCP) [V] Table 2: Control Voltage [VDC] V0-REG [V] VCTRL (REXT = 0) VCTRL(REXT = 15K) 0.7525 0.700 0.700 1.0 0.684 0.436 1.2 0.670 0.223 1.5 0.650 -0.097 1.8 0.630 -0.417 2.0 0.617 -0.631 2.5 0.584 -1.164 3.3 0.530 -2.017 5.0 0.417 -3.831 5.5 0.384 -4.364 Input Undervoltage Lockout The input voltage must be typically 9.0V for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops below typically 8.8V. The output voltage can be also programmed by external voltage source. To make trimming less sensitive, a series external resistor Rext is recommended between TRIM pin and programming voltage source. Control Voltage can be calculated by the formula: VCTRL 0.7 Protection Features The converter is protected against overcurrent and short circuit conditions. Upon sensing an overcurrent condition, the converter will enter hiccup mode. Once over-load or short circuit condition is removed, Vout will return to nominal value. 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 converter meets North American and International safety regulatory requirements per UL60950 and EN60950. The maximum DC voltage between any two pins is Vin under all operating conditions. Therefore, the unit has ELV (extra low voltage) output; it meets SELV requirements under the condition that all input voltages are ELV. The converter is not internally fused. To comply with safety agencies requirements, a recognized fuse with a maximum rating of 7.5 Amps must be used in series with the input line. 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, start-up and shutdown Page 6 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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. 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, comprising 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 facilities 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. . It is recommended the use of AWG #40 gauge thermocouples to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to Fig. C for optimum measuring thermocouple locations. Thermal Derating Load current vs. ambient temperature and airflow rates are given in Figs. x.1 to x.2 for maximum temperature of 120 C. Ambient temperature was varied between 25 C and 85 C, with airflow rates from 30 to 500 LFM (0.15m/s to 2.5 m/s), and vertical and horizontal converter mounting. For each set of conditions, the maximum load current is defined as the lowest of: (i) The output current at which any MOSFET temperature does not exceed a maximum specified temperature (120C) as indicated by the thermographic image, or (ii) The maximum current rating of the converter (5A) During normal operation, derating curves with maximum FET temperature less than or equal to 120 C should not be exceeded. Temperature on the PCB at the thermocouple location shown in Fig. C should not exceed 120 C in order to operate inside the derating curves. Efficiency Figure x.3 shows the efficiency vs. load current plot for ambient temperature of 25 C, airflow rate of 200 LFM (1 m/s) and input voltages of 9.6V, 12V and 14V. Power Dissipation Fig. x.4 shows the power dissipation vs. load current plot for Ta = 25C, airflow rate of 200 LFM (1 m/s) with vertical mounting and input voltages of 9.6V, 12V and 14V. Ripple and Noise The output voltage ripple waveform is measured at full rated load current. Note that all output voltage waveforms are measured across a 1 F ceramic capacitor. The output voltage ripple and input reflected ripple current waveforms are obtained using the test setup shown in Fig. D. iS Vin 1 H source inductance Vsource Vout Y-Series CIN GND Fig. C: Location of the thermocouple for thermal testing. MCD10132 Rev. 1.1, 21-Jun-10 1F ceramic capacitor DC/DC Converter 47F ceramic capacitor CO 47F ceramic capacitor Vout GND Fig. D: Test setup for measuring input reflected ripple currents, is and output voltage ripple. Page 7 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 5.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 5.0V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 5.0V.2: Available load current vs. ambient temperature and airflow rates for Vout = 5.0V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 3.0 0.90 2.5 Power Dissipation [W] 0.95 0.85 Efficiency 40 0.80 0.75 14 V 12 V 9.6 V 2.0 1.5 1.0 14 V 12 V 9.6 V 0.5 0.70 0.0 0.65 0 1 2 3 4 5 0 6 Fig. 5.0V.3: Efficiency vs. load current and input voltage for Vout = 5.0V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 2 3 Load Current [Adc] Load Current [Adc] 4 5 6 Fig. 5.0V.4: Power Loss vs. load current and input voltage for Vout = 5.0V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 8 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 5.0V.5: Turn-on transient for Vout = 5.0V with application of Vin at full rated load current (resistive) and 47F external capacitance at Vin = 12V. Top trace: Vin (10V/div.); Bottom trace: output voltage (1V/div.); Time scale: 5 ms/div. Fig. 5.0V.6: Output voltage ripple (10mV/div.) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 5.0V. Time scale: 2 s/div. Fig. 5.0V.7: Output voltage response for Vout = 5.0V to positive load current step change from 2.5A to 5A with slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mV/div.); Bottom trace: load current (2A/div.). Co = 47F ceramic. Time scale: 20s/div. Fig. 5.0V.8: Output voltage response for Vout = 5.0V to negative load current step change from 5A to 2.5A with slew rate of -5A/s at Vin = 12V. Top trace: output voltage (100mV/div.); Bottom trace: load current (2A/div.). Co = 47F ceramic. Time scale: 20s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 9 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 30 Ambient Temperature [C] 50 60 70 80 90 Ambient Temperature [C] Fig. 3.3V.1: Available load current vs. ambient temperature and airflow rates for Vout = 3.3V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 3.3V.2: Available load current vs. ambient temperature and airflow rates for Vout = 3.3V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 3.0 0.90 2.5 Power Dissipation [W] 0.95 0.85 Efficiency 40 0.80 0.75 14 V 12 V 9.6 V 2.0 1.5 1.0 14 V 12 V 9.6 V 0.5 0.70 0.0 0.65 0 1 2 3 4 5 0 6 Fig. 3.3V.3: Efficiency vs. load current and input voltage for Vout = 3.3V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 2 3 Load Current [Adc] Load Current [Adc] 4 5 6 Fig. 3.3V.4: Power Loss vs. load current and input voltage for Vout = 3.3V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 10 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 3.3V.5: Turn-on transient for Vout = 3.3V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 3.3V.6: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 3.3V. Time scale: 2 s/div. Fig. 3.3V.7: Output voltage response for Vout = 3.3V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 3.3V.8: Output voltage response for Vout = 3.3V to a negative load current step change from 5A to 2.5A with a slew rate of -5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 11 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 Ambient Temperature [C] 50 60 70 80 90 Ambient Temperature [C] Fig. 2.5V.1: Available load current vs. ambient temperature and airflow rates for Vout = 2.5V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120C. Fig. 2.5V.2: Available load current vs. ambient temperature and airflow rates for Vout = 2.5V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120C. 2.5 0.90 2.0 Power Dissipation [W] 0.95 0.85 Efficiency 40 0.80 0.75 14 V 12 V 9.6 V 1.5 1.0 14 V 12 V 9.6 V 0.5 0.70 0.0 0.65 0 1 2 3 4 5 0 6 Fig. 2.5V.3: Efficiency vs. load current and input voltage for Vout = 2.5V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 2 3 4 5 6 Load Current [Adc] Load Current [Adc] Fig. 2.5V.4: Power Loss vs. load current and input voltage for Vout = 2.5V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 12 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 2.5V.4: Turn-on transient for Vout = 2.5V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 2.5V.5: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 2.5V. Time scale: 2 s/div. Fig. 2.5V.7: Output voltage response for Vout = 2.5V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 2.5V.8: Output voltage response for Vout = 2.5V to a negative load current step change from 5A to 2.5A with a slew rate of -5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 13 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 30 40 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 20 4 50 60 70 80 0 90 20 30 Ambient Temperature [C] 50 60 70 80 90 Ambient Temperature [C] Fig. 2.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 2.0V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 2.0V.2: Available load current vs. ambient temperature and airflow rates for Vout = 2.0V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 2.5 0.90 2.0 Power Dissipation [W] 0.95 0.85 Efficiency 40 0.80 0.75 14 V 12 V 9.6 V 1.5 1.0 14 V 12 V 9.6 V 0.5 0.70 0.0 0.65 0 1 2 3 4 5 0 6 2 3 Load Current [Adc] Load Current [Adc] Fig. 2.0V.3: Efficiency vs. load current and input voltage for Vout = 2.0V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 4 5 6 Fig. 2.0V.4: Power Loss vs. load current and input voltage for Vout = 2.0V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 14 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 2.0V.5: Turn-on transient for Vout = 2.0V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 2.0V.6: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 2.0V. Time scale: 2 s/div. Fig. 2.0V.7: Output voltage response for Vout = 2.0V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 2.0V.8: Output voltage response for Vout = 2.0V to a negative load current step change from 5A to 2.5A with a slew rate of -5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 15 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 30 Ambient Temperature [C] 50 60 70 80 90 Ambient Temperature [C] Fig. 1.8V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.8V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 1.8V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.8V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 2.5 0.90 2.0 Power Dissipation [W] 0.95 0.85 Efficiency 40 0.80 0.75 14 V 12 V 9.6 V 1.5 1.0 14 V 12 V 9.6 V 0.5 0.70 0.0 0.65 0 1 2 3 4 5 0 6 Fig. 1.8V.3: Efficiency vs. load current and input voltage for Vout = 1.8V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 2 3 Load Current [Adc] Load Current [Adc] 4 5 6 Fig. 1.8V.4: Power Loss vs. load current and input voltage for Vout = 1.8V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 16 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 1.8V.5: Turn-on transient for Vout = 1.8V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 1.8V.6: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 1.8V. Time scale: 2 s/div. Fig. 1.8V.7: Output voltage response for Vout = 1.8V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 1.8V.8: Output voltage response for Vout = 1.8V to a negative load current step change from 5A to 2.5A with a slew rate of -5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 17 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 30 Ambient Temperature [C] 50 60 70 80 90 Ambient Temperature [C] Fig. 1.5V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.5V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 1.5V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.5V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 2.0 0.90 Power Dissipation [W] 0.85 Efficiency 40 0.80 0.75 14 V 12 V 9.6 V 0.70 1.5 1.0 14 V 12 V 9.6 V 0.5 0.0 0.65 0 1 2 3 4 5 0 6 Fig. 1.5V.3: Efficiency vs. load current and input voltage for Vout = 1.5V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 2 3 Load Current [Adc] Load Current [Adc] 4 5 6 Fig. 1.5V.4: Power Loss vs. load current and input voltage for Vout = 1.5V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 18 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 1.5V.5: Turn-on transient for Vout = 1.5V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 1.5V.6: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 1.5V. Time scale: 2 s/div. Fig. 1.5V.7: Output voltage response for Vout = 1.5V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 1.5V.8: Output voltage response for Vout = 1.5V to a negative load current step change from 5A to 2.5A with a slew rate of -5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 19 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 30 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 1.2V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.2V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 1.2V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.2V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 2.0 0.90 Power Dissipation [W] 0.85 Efficiency 0.80 0.75 0.70 14 V 12 V 9.6 V 1.5 1.0 14 V 12 V 9.6 V 0.5 0.65 0.0 0.60 0 1 2 3 4 5 0 6 2 3 Load Current [Adc] Load Current [Adc] Fig. 1.2V.3: Efficiency vs. load current and input voltage for Vout = 1.2V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 4 5 6 Fig. 1.2V.4: Power Loss vs. load current and input voltage for Vout = 1.2V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 20 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 1.2V.5: Turn-on transient for Vout = 1.2V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 1.2V.6: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 1.2V. Time scale: 2 s/div. Fig. 1.2V.6: Output voltage response for Vout = 1.2V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 1.2V.8: Output voltage response for Vout = 1.2V to a negative load current step change from 5A to 2.5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 21 of 24 www.power-one.com 6 6 5 5 Load Current [Adc] Load Current [Adc] YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A 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 30 Ambient Temperature [C] 40 50 60 70 80 90 Ambient Temperature [C] Fig. 1.0V.1: Available load current vs. ambient temperature and airflow rates for Vout = 1.0V converter mounted vertically with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. Fig. 1.0V.2: Available load current vs. ambient temperature and airflow rates for Vout = 1.0V converter mounted horizontally with Vin = 12V, air flowing from pin 5 to pin 1 and maximum MOSFET temperature 120 C. 0.90 2.0 Power Dissipation [W] 0.85 Efficiency 0.80 0.75 0.70 14 V 12 V 9.6 V 1.5 1.0 14 V 12 V 9.6 V 0.5 0.65 0.60 0.0 0 1 2 3 4 5 6 0 Load Current [Adc] 2 3 Load Current [Adc] Fig. 1.0V.3: Efficiency vs. load current and input voltage for Vout = 1.0V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. MCD10132 Rev. 1.1, 21-Jun-10 1 4 5 6 Fig. 1.0V.4: Power Loss vs. load current and input voltage for Vout = 1.0V converter mounted vertically with air flowing from pin 5 to pin 1 at a rate of 200 LFM (1 m/s) and Ta = 25 C. Page 22 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Fig. 1.0V.5: Turn-on transient for Vout = 1.0V with application of Vin = 12V at full rated load current (resistive) and 47F external capacitance. Top trace: Vin (10V/div); Bottom trace: Vout (1V/div); Time scale: 2 ms/div. Fig. 1.0V.6: Output voltage ripple (10mv/div) at full rated load current into a resistive load with external capacitance 47F ceramic + 1F ceramic and Vin = 12V for Vout = 1.0V. Time scale: 2 s/div. Fig. 1.0V.7: Output voltage response for Vout = 1.0V to a positive load current step change from 2.5A to 5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. Fig. 1.0V.8: Output voltage response for Vout = 1.0V to a negative load current step change from 5A to 2.5A with a slew rate of 5A/s at Vin = 12V. Top trace: output voltage (100mv/div); Bottom trace: load current (2A/div). Co = 47F ceramic. Time scale: 20 s/div. MCD10132 Rev. 1.1, 21-Jun-10 Page 23 of 24 www.power-one.com YM12S05 DC-DC Converter Data Sheet 9.6-14 VDC Input; 0.7525-5.5 VDC Programmable @ 5A Physical Information Pad/Pin Connections Pad/Pin # 1 2 3 4 5 2 3 Function ON/OFF Vout TRIM GND Vin 4 1 5 TOP VIEW YM12S Platform Notes SIDE VIEW All dimensions are in inches [mm] Connector Material: Copper Connector Finish: Gold over Nickel Module Weight: 0.079 oz [2.26 g] Module Height: 0.260" Max., 0.234" Min. Recommended Surface-Mount Pads: Min. 0.080" X 0.112" [2.03 x 2.84] YM12S Pinout (Surface Mount) Converter Part Numbering Scheme Product Series Input Voltage Mounting Scheme Rated Load Current RoHS Compatible YM 12 S 05 G 9.6V - 14V S Surface Mount 5A (0.7525V to 5.5V) Y-Series No Suffix RoHS lead-solder-exempt compliant G RoHS Compliant The example above describes P/N YM12S05G: 9.6V - 14V input, surface mount, 5A at 0.7525V to 5.5V output, and RoHS compliant. Please consult factory regarding availability of a specific version. 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. MCD10132 Rev. 1.1, 21-Jun-10 Page 24 of 24 www.power-one.com