Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet Features * * * * * * * * * * * * Applications * * * * Distributed power architectures Telecommunications equipment LAN/WAN applications Data processing applications * * Low profile (8.5mm) 1500 VDC input-to-output isolation meets basic insulation High efficiency - to 90% at full load Start-up into high capacitive load Low conducted and radiated EMI Output overcurrent protection Output overvoltage protection Overtemperature protection Back drive protection Remote sense Set point accuracy 1% Remote on/off (primary referenced), positive or negative logic Output voltage trim adjust, positive or negative UL 1950 Recognized, CSA 22.2 No. 95095 certified, TUV IEC950 Description The new Q2S30 Series of single-output DC/DC converters offer unprecedented density and performance in an industry-standard, quarter-brick footprint. Patent pending technology combined with state-of-the-art packaging techniques allows the Q2S30 to provide 30A of output current in an 8.5mm package without a heatsink. The 100% surface mount design provides consistent high quality and reliability, and the SMT mounting option eliminates the need for separate (additional manual) operations to mount the converters to the motherboards during mass production. Model Q2S30ZA Q2S30ZB Q2S30ZC Q2S30ZD Q2S30ZE Q2S30YA Q2S30YB Q2S30YC Q2S30YD Q2S30YE Input voltage range, VDC 36-75 36-75 36-75 36-75 36-75 18-36 18-36 18-36 18-36 18-36 REV. JUN 17, 2002 Input current, max, ADC 1.5 1.7 1.9 2.3 3.1 3.1 3.6 4.0 4.9 6.3 Selection Chart Output Output rated voltage, current, I rated VDC ADC 1.5 30 1.8 30 2.0 30 2.5 30 3.3 30 1.5 30 1.8 30 2.0 30 2.5 30 3.3 30 Output Ripple / Noise, Typ, mV p-p 30 30 30 30 30 30 30 30 30 30 Efficiency @ I rated, Typical, % 83 85 85 87 88 82 83.5 84.5 86 88 Page 1 of 11 Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely effect long-term reliability, and cause permanent damage to the converter. Parameter Input voltage Operating Temperature Storage Temperature ON/OFF Control Voltage Conditions/Description Continuous Per GR-513, tp = 10s At 100% load Min -40 -40 Referenced to -Vin Max 75 100 100 125 20 Units VDC VDC C C VDC Environmental and Mechanical Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Shock Sinusoidal Vibration Weight Water Washing MTBF Conditions/Description Halfsine wave, 3 axes GR-63-Core, Section 5.A.2 Min 50 1 Nom Max 102(28) Yes 2.6 Standard process Telcordia TR-332, Method I Case 1 Units g Oz/g MHrs Isolation Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Insulation Safety Rating Isolation Voltage Isolation Resistance Isolation Capacitance Conditions/Description Min Nom Basic Max 1500 10 Units VDC M pF 230 Input Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Input Voltage Conditions/Description Continuous Turn-On Input Voltage Input Reflected Ripple Current Ramping Up Vin= 36-75 Vin = 18-36 Ramping Down Vin = 36-75 Vin = 18-36 To Output Regulation Band 100% Resistive Load 25 MHz Bandwidth Inrush Transient Vin = Vin max Turn-Off Input Voltage Turn-On Time REV. JUN 17, 2002 Min 36 18 33 16 31 15 Nom 48 24 Max 75 36 35 17.5 33 16.5 2.5 Units VDC VDC VDC ms 10 mApk.pk 0.1 A2s Page 2 of 11 Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet Output Specifications All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted. Parameter Output Voltage Setpoint Accuracy Output Current* Line Regulation Load Regulation Total Output Voltage Regulation Remote Sense Headroom*** Dynamic Regulation Peak Deviation Settling Time Admissible Load Capacitance Output Current Limit Threshold** Switching Frequency Over voltage Protection, Non Latching Trim Range Conditions/Description Vin=Vin.nom, Full Load Vin min to Vin max, Iout max Vin=Vnom, Iout min to Iout max Over all input voltage, load, and temperature conditions 50-75% load step change di/dt = 5 A/s to 1% error band Iout max, Nom Vin Vout 0.97Vout nom Over all input voltage and load conditions Iout max, Vin=Vnom Min -1 0 Nom 2 Max 1 30 5 Units %Vout ADC mV 2 5 mV 3 %Vout 10% %Vout 30,000 40 127 mV s F ADC kHz %Vout +10 %Vout -3 160 100 33 115 36 435 122 -20 ** Overcurrent protection is non-latching with auto recovery. *** Vout can be increased up to 10% via the sense leads or up to 10% via the trim function, however total output voltage trim from all sources should not exceed 10% of Vout (NOM) in order to ensure specified operation of over-voltage protection circuitry. Feature Specifications All specifications apply over specified input voltage, output load, and temperature range, unless otherwise noted. Parameter Shutdown (ON/OFF) Negative Logic - Converter ON - Converter OFF Positive Logic - Converter ON - Converter OFF Overtemperature Protection REV. JUN 17, 2002 Conditions/Description On/Off signal is low - converter is ON Low logic range High logic range On/Off signal is low -converter is OFF High logic range Low logic range Shut down Min Nom Max Units -20 2.4 0.8 20 VDC VDC 2.4 -20 20 0.8 VDC VDC C 118 Page 3 of 11 Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet Characteristic curves 0.95 0.95 0.90 0.90 0.85 Efficiency Efficiency 0.85 0.80 0.75 72 V 54 V 36 V 0.80 0.75 72 V 54 V 36 V 0.70 0.70 0.65 0 5 10 15 20 25 30 0.65 35 0 5 10 15 20 25 30 35 Load Current [Adc] Load Current [Adc] Fig. 4 Q2S30ZB (1.8V) Efficiency vs. Load Fig .1 Q2S30ZE (3.3V) Efficiency vs. Load 0.95 0.95 0.90 0.90 0.85 Efficiency Efficiency 0.85 0.80 0.75 72 V 54 V 36 V 0.75 0.80 72 V 54 V 36 V 0.70 0.70 0.65 0.65 0 5 10 15 20 25 30 0 35 5 10 20 25 30 35 Fig. 5 Q2S30ZA (1.5V) Efficiency vs. Load Fig. 2 Q2S30ZD (2.5V) Efficiency vs. Load 0.95 0.95 0.90 0.90 0.85 Efficiency 0.85 Efficiency 15 Load Current [Adc] Load Current [Adc] 0.80 0.75 0.80 36 V 27 V 18 V 0.75 72 V 54 V 36 V 0.70 0.70 0.65 0.65 0 5 10 15 20 25 30 Load Current [Adc] Fig. 3 Q2S30ZC (2.0V) Efficiency vs. Load REV. JUN 17, 2002 35 0 5 10 15 20 25 30 Load Current [Adc] Fig. 6 Q2S30YE (3.3V) Efficiency vs. Load Page 4 of 11 35 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output 0.80 0.75 Data Sheet 0.80 0.75 36 V 27 V 18 V 36 V 27 V 18 V 0.70 0.70 0.65 0.65 0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 35 Load Current [Adc] Load Current [Adc] Fig. 10 Q2S30YA (1.5V) Efficiency vs. Load Fig. 7 Q2S30YD (2.5V) Efficiency vs. Load Typical Application 0.95 Fig. 11 shows the recommended connections for the Q2S30 Series converter. 0.90 Efficiency 0.85 0.80 0.75 36 V 27 V 18 V 0.70 0.65 0 5 10 15 20 25 30 35 Load Current [Adc] Fig. 11 Typical Application of Q2S30 Series Fig. 8 Q2S30YC (2.0V) Efficiency vs. Load The Q2S30 Series converters do not require any external components for proper operation. However, if the distribution of the input voltage to the converter contains significant inductance, an input capacitor may be required to enhance performance of the converter. A minimum of a 100F electrolytic capacitor with the ESR<0.7 is recommended for the Q2S30 series. 0.95 0.90 Efficiency 0.85 0.80 0.75 36 V 27 V 18 V 0.70 0.65 0 5 10 15 20 25 30 35 If magnitude of the inrush current needs to be limited, see the "Inrush Current Control Application Note" on the Power-One website at www.power-one.com. Load Current [Adc] Fig. 9 Q2S30YB (1.8V) Efficiency vs. Load REV. JUN 17, 2002 For output decoupling we recommend using 10F tantalum and 1F ceramic capacitors connected directly across the output pins of the converter. Note that the capacitors do not substitute the filtering required by the load. Page 5 of 11 Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet Shutdown Feature Description The ON/OFF pin of the Q2S30 Series converters functions as a normal soft shutdown. It is referenced to the -Vin pin. With positive logic, when the ON/OFF pin is pulled low, the output is turned off and the unit goes into a very low input power mode. With negative logic, when the ON/OFF pin is pulled low, the unit is turned on. An open collector switch is recommended to control the voltage between the ON/OFF pin and the -Vin pin of the converter. The ON/OFF pin is pulled up internally, so no external voltage source is required. The user should avoid connecting a resistor between the ON/OFF pin and the +Vin pin. When the ON/OFF pin is used to achieve remote control, the user must take care to ensure that the pin reference for the control is really the -Vin pin. The control signal must not be referenced ahead of EMI filtering or remotely from the unit. Optically coupling the information and locating the optical coupler directly at the module will solve any of these problems. Note: If the ON/OFF pin is not used, it can be left floating (positive logic), or connected to the -Vin pin (negative logic). Fig. 12 Output Voltage Trim-up RT-INCR = 5.1(100+)VO-NOM - 624.75 __________________________________ - 10.2 [K] 1.225 where, RT-INCR = Required value of trim-up resistor VO-NOM = Nominal value of output voltage insert absolute value bars = VO-REQ - VO-NOM _________________________ x 100 [%] VO-NOM VO-REQ = Desired (trimmed) output voltage When trimming up, care must be taken not to exceed the converter`s maximum allowable output power. To trim down the output voltage, a trim resistor, RT-DECR, should be connected between TRIM (Pin 6) and SENSE(-) (Pin 5), as illustrated in Fig.13. Output Voltage Trim The trim feature allows the user to adjust the output voltage from the nominal value. This can be used to compensate distribution drops, perform margining in production, or accommodate other requirements when output voltage needs to be adjusted from the nominal. Fig. 13 Output Voltage Trim-down The trip-down resistor can be calculated from: The converter's output voltage (at the terminals) can be adjusted up 10% or down 20% relative to the nominal output voltage by connecting the TRIM pin to sense (+) or sense (-) via a trim resistor. The Trim pin should be left open if the trimming function is not to be used. To trim up the output voltage, a trim resistor, RTINCR, should be connected between TRIM (Pin 6) and SENSE(+) (Pin 7), as illustrated in Fig. 12. The trim-up resistor can be calculated from: REV. JUN 17, 2002 510 RT-DECR = ____________ - 10.2 [K] where, RT-DECR =. Required value of trim-down resistor and is as defined above. Page 6 of 11 Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet Start-up Information (using negative ON/OFF) Scenario #1: Initial Start-up From Bulk Supply ON/OFF function enabled, converter started via application of VIN. See Figure 14. Time Comments t0 ON/OFF pin is ON; system front end power is toggled on, VIN to converter begins to rise. t1 VIN crosses Under-Voltage 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 start-up time (t3- t1) is typically 2.5 ms. V IN ON/OFF STATE OFF ON V OUT t0 Scenario #2: Initial Start-up Using ON/OFF Pin With VIN previously powered, converter started via ON/OFF pin. See Figure 15. Comments VINPUT at nominal value. 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 start-up time (t3- t1) is typically 2.5 ms. t1 t2 t t3 Fig.14 Start-up Scenario #1. VIN Time t0 t1 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 16. 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 start-up 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 8. 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 start-up time (t5- t2) is typically 102.5 ms. For (t2- t1) > 100 ms, start-up will be typically 2.5 ms after release of ON/OFF pin REV. JUN 17, 2002 ON/OFF STATE OFF ON VOUT t0 t1 t2 t t3 Fig. 15 Start-up Scenario #2. VIN 100 ms ON/OFF STATE OFF ON VOUT t0 t1 t2 t3 t4 t5 Fig. 16 Start-up Scenario #3. Page 7 of 11 t Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output including the Q2S30 converter, must pass a dielectric withstand test for Reinforced insulation. Design of this type of systems requires expert engineering and understanding of the overall safety requirements and should be performed by qualified personnel. Safety Considerations The Q2S30 Series converters have no internal fuse. An external fuse must be provided to protect the system from catastrophic failure. The fuse with a rating not greater than 10A is recommended. The user can select a lower rating fuse based upon the highest inrush transient at the maximum input voltage and the maximum input current of the converter at the minimum input voltage. Both input traces and the chassis ground trace (if applicable) must be capable of conducting a current of 1.5 times the value of the fuse without opening. The fuse must not be placed in the grounded input line, if any. In order for the output of the Q2S30 Series converter to be considered as SELV (Safety Extra Low Voltage) or TNV-1, according to all IEC60950 based standards, one of the following requirements must be met in the system design: * * * If the voltage source feeding the module is SELV or TNV-2, the output of the converter may be grounded or ungrounded. If the voltage source feeding the module is ELV, the output of the converter may be considered SELV only if the output is grounded per the requirements of the standard. If the voltage source feeding the module is a Hazardous Voltage Secondary Circuit, the voltage source feeding the module must be provided with at least basic insulation between the source to the converter and any hazardous voltages. The entire system, REV. JUN 17, 2002 Thermal Considerations The Q2S30 Series converters are designed for natural or forced convection cooling. The maximum allowable output power of the converters is determined by meeting the derating criteria of all electronic components used in the power supplies. An example of the derating criteria for the semiconductor junction temperature is not to exceed 120 C to provide reliable long-term operation of the converters. Note: Please contact Power-One for more derating criteria for other components. The graphs below show the maximum output current of the Q2S30 Series converters at different ambient temperatures under both natural and forced (airflow direction from pin 1 to pin 3) convection. As an example, the Q2S30ZE operating at 50 C can deliver 30A reliably with 300LFM forced air, while up to 30A at 60 C reliably with 400LFM forced air. 35 30 Load Current [Adc] The Q2S30 Series converters feature 1500 Volt DC isolation from input-to-output. The input-tooutput DC resistance is greater than 10 M. These converters are provided with basic insulation between input and output circuits according to all IEC60950 based standards. Nevertheless, if the system using the converter needs to receive safety agency approval, certain rules must be followed in the design of the system. In particular, all of the creepage and clearance requirements of the end-use safety requirements must be observed. These documents include UL60950, CSA60950-00 and EN60950, although other additional requirements may be needed for user's specific applications. Data Sheet 25 20 15 500 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) 0 LFM (0 m/s) 10 5 0 20 30 40 50 60 70 80 Ambient Temperature [C] Fig. 17 Q2S30ZE (3.3V) Derating Curves Page 8 of 11 90 35 35 30 30 Load Current [Adc] Load Current [Adc] Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output 25 20 15 500 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) 0 LFM (0 m/s) 10 5 25 20 15 500 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) 0 LFM (0 m/s) 10 5 0 Data Sheet 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 30 30 Load Current [Adc] Load Current [Adc] 35 25 20 500 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) 0 LFM (0 m/s) 5 70 80 90 80 90 80 90 25 20 15 500 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) 0 LFM (0 m/s) 10 5 0 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 30 30 Load Current [Adc] 35 25 20 500 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) 0 LFM (0 m/s) 10 5 50 60 70 Fig. 22 Q2S30YE (3.3V) Derating Curves 35 15 40 Ambient Temperature [C] Fig. 19 Q2S30ZC (2.0V) Derating Curves Load Current [Adc] 60 Fig. 21 Q2S30ZA (1.5V) Derating Curves 35 10 50 Ambient Temperature [C] Fig. 18 Q2S30ZD (2.5V) Derating Curves 15 40 25 20 15 500 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) 0 LFM (0 m/s) 10 5 0 0 20 30 40 50 60 70 Ambient Temperature [C] Fig. 20 Q2S30ZB (1.8V) Derating Curves REV. JUN 17, 2002 80 90 20 30 40 50 60 70 Ambient Temperature [C] Fig. 23 Q2S30YD (2.5V) Derating Curves Page 9 of 11 35 35 30 30 Load Current [Adc] Load Current [Adc] Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output 25 20 15 500 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) 0 LFM (0 m/s) 10 5 Data Sheet 25 20 15 500 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) 0 LFM (0 m/s) 10 5 0 0 20 30 40 50 60 70 80 90 20 30 40 50 60 70 80 Ambient Temperature [C] Ambient Temperature [C] Fig. 26 Q2S30YA (1.5V) Derating Curves Fig. 24 Q2S30YC (2.0V) Derating Curves 35 Load Current [Adc] 30 25 20 15 500 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) 0 LFM (0 m/s) 10 5 0 20 30 40 50 60 70 80 90 Ambient Temperature [C] Fig. 25 Q2S30YB (1.8V) Derating Curves REV. JUN 17, 2002 Page 10 of 11 90 Q2S30 Series - 30A Quarter-Brick DC/DC Converter 48, 24V Input 3.3V, 2.5V, 2.0V, 1.8V, 1.5V Output Data Sheet MECHANICAL DRAWING Inches (mm) Surface Mount Through Hole Height option blank C2 C3 C4 * * * * * HT (Max Height) 0.303 [7.69] 0.336 [8.53] 0.400 [10.16] 0.500 [12.70] CL (Min Clearance) 0.030 [ 0.77] 0.063 [1.600] 0.127 [3.23] 0.227 [5.77] PIN CONNECTIONS PIN FUNCTION 1 Vin (+) 2 Remote ON/OFF 3 Vin (-) 4 Vout (-) 5 Sense (-) 6 Trim 7 Sense (+) 8 Vout (+) Pins 1-3 and 5-7 are * 0.040" (1.02) with * 0.078" (1.98) shoulder Pins 4 and 8 are *0.062" (1.57) without shoulder Pin material: Brass Pin Finish: Tin/Lead over Nickel Module Weight: 0.95 oz (27 g) ORDERING INFORMATION Product Series Output Current Input Voltage Output Voltage 1 Q2S 30 Z G Z = 48Vin Nom. E = 3.3VDC D = 2.5VDC C = 2.0VDC B = 1.8VDC A = 1.5VDC Single Output Quarter-Brick Format Example: ADC Y= 24Vin Nom. - ON/OFF Logic Surface Mount N M6 N Negative M6 Surface Mount (Blank) Positive (Blank) Through Hole Pin Length Height Option C2 Blank 0.188" 7 0.145" 8 0.110" Not valid w/M6 Option See Chart Not Valid w/M6 Option Q2S30ZA-NM6 indicates a 1.5V output model with Negative On/Off logic in a SMT mounting package. Notes 1. 2. 3. Consult factory for the complete list of available options. Power-One products are not 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. 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. JUN 17, 2002 Page 11 of 11