75-350 Watts xppower.com QSB Series Wide Input Range Industry Standard Packages -40 C to +100 C Operating Temperature High Power Density Base Plate Cooled Remote On/Off & Remote Sense 3 Year Warranty Specification Input General Input Voltage Range See tables Efficiency See tables Input Current See tables Isolation Voltage 1500 VDC Input to Output 1500 VDC Input to Case Input Reverse Voltage None 1500 VDC Output to Case Protection 7 Isolation Resistance 10 Input Filter Pi network Isolation Capacitance QSB75-200: 100 pF typical, Undervoltage Lockout QSB75-150: 24 Vin: - turn on 8.8 V, QSB350: 1000 pF typical turn off 8.0 V for 9-36 V, QSB200: 24 Vin -turn on 9.6 V, Switching Frequency QSB75: 300 kHz typical turn off 8.8 V, QSB100, 150 & 200: 250 kHz typical QSB75-200: 48 Vin - turn on 17.0 V, QSB350 (3V3 & 5 V): 300 kHz typical turn off 16.0 V, QSB350 (12, 24 & 28 V): 330 kHz typical 3 3 QSB350: 24 Vin - turn on 17.0 V, Power Density QSB75: 45.4 W/in , QSB100: 60.5 W/in , 3 3 turn off 16.0 V, QSB150: 57.2 W/in , QSB200: 70.3 W/in , QSB350: 48 Vin - turn on 35.0 V, 3 QSB350: 123.0 W/in turn off 33.0 V MTBF QSB75 & 100: 730 kHrs Input Surge 24 Vin: 50 VDC for 100 ms QSB150 & 200: 1 MHrs 48 Vin: 100 VDC for 100 ms QSB350: 658 kHrs typical to MIL-HDBK-217F at 25 C, GB Output Environmental Output Voltage Trim 10%, see application notes Initial Set Accuracy 1.5% max Operating Base Plate -40 C to +100 C, see derating curves Temperature Line Regulation 0.2% max measured from high line to low line Storage Temperature -55 C to +105 C Load Regulation 0.2% max measured from 0-100% load Operating Humidity Up to 90% non-condensing Transient Response 5% max deviation, recovery to within Cooling Base plate cooled, see derating curves 1% in 500 s, 25% step load change Ripple & Noise 3.3 & 5 V models: 100 mV pk-pk EMC & Safety 12 & 15 V models: 150 mV pk-pk Emissions EN55022, level A conducted with external 24 V & 28 V models: 280 mV max pk-pk components, see test reports for further 20 MHz bandwidth (see note 1) details Overvoltage Protection 115-140% ESD Immunity EN61000-4-2, level 2, Perf Criteria B Short Circuit Protection Continuous Radiated Immunity EN61000-4-3, 3 V/m, Perf Criteria A Thermal Shutdown Case temperature >105 C EFT/Burst EN61000-4-4, level 1, Perf Criteria A Temperature 0.03%/C Surge E N61000-4-5, level 1, Perf Criteria A Coefficient Conducted Immunity EN61000-4-6, 3 V rms Current Limit 110-140% nominal output for 75 & 150 W Perf Criteria A 110-160% nominal output for 100 W Safety Approvals UL60950-1 110-150% nominal output for 200 W 105-140% nominal output for 350 W Remote On/Off See notes 2 & 3 Remote Sense Compensates up to 10% of Vout nominal, total of output trim and remote sense DC-DCDC-DC QSB75/100 Models and Ratings (4) Input Current (3) Input Voltage Output Voltage Output Current Efficiency Model Number No Load Full Load 3.3 V 12.00 A 50 mA 2.04 A 81.0% QSB7524S3V3 5.0 V 12.00 A 50 mA 2.98 A 84.0% QSB7524S05 9-36 VDC 12.0 V 6.25 A 50 mA 3.64 A 86.0% QSB7524S12 (24 V nominal) 15.0 V 5.00 A 50 mA 3.64 A 86.0% QSB7524S15 24.0 V 3.12 A 50 mA 3.63 A 86.0% QSB7524S24 3.3 V 12.00 A 30 mA 1.10 A 82.0% QSB7548S3V3 5.0 V 12.00 A 30 mA 1.47 A 85.0% QSB7548S05 18-75 VDC 12.0 V 6.25 A 30 mA 1.82 A 86.0% QSB7548S12 (48 V nominal) 15.0 V 5.00 A 30 mA 1.80 A 87.0% QSB7548S15 24.0 V 3.12 A 30 mA 1.80 A 87.0% QSB7548S24 3.3 V 30.00 A 120 mA 4.80 A 86.0% QSB10024S3V3 5.0 V 20.00 A 120 mA 4.82 A 86.5% QSB10024S05 9-36 VDC 12.0 V 8.30 A 80 mA 4.80 A 86.5% QSB10024S12 (24 V nominal) 15.0 V 6.70 A 80 mA 4.84 A 86.5% QSB10024S15 24.0 V 4.17 A 80 mA 4.79 A 87.0% QSB10024S24 3.3 V 30.00 A 60 mA 2.37 A 88.0% QSB10048S3V3 5.0 V 20.00 A 60 mA 2.37 A 88.0% QSB10048S05 18-75 VDC 12.0 V 8.30 A 30 mA 2.36 A 88.0% QSB10048S12 (48 V nominal) 15.0 V 6.70 A 30 mA 2.38 A 88.0% QSB10048S15 24.0 V 4.17 A 30 mA 2.37 A 88.0% QSB10048S24 Notes 1. Ripple & noise is measured with a 10 F tantalum capacitor and 1.0 F ceramic 3. Add suffix N to the model number to receive the unit with negative logic capacitor across output. Remote On/Off. 2. Logic compatibility: Ref to -ve input. Module On = open circuit. 4. Input current specified at 24 V for 9-36 VDC and 48 V for 18-75 VDC models. Module Off = <0.8 VDC. Mechanical Details 2.28 (57.90) 2.00 (50.80) PIN CONNECTIONS 1.14 (28.96) Mounting hole diameter: Pin Function 0.126 (3.2) clearance hole 0.60 1 +Vin 1.45 (15.24) (36.8) 2 Remote On/Off 3 4 1.03 5 3 -Vin (26.2) 0.60 2 BOTTOM VIEW 6 (15.24) 4 -Vout 7 5 -Sense 1 8 0.73 0.30 (18.42) 6 Trim (7.62) 7 +Sense 8 +Vout 1.86 (47.20) 0.040 0.059 Notes (1.02) (1.50) 0.16 1. Dimensions are in inches (mm) Pins 1,2,3,5,6,7 Pins 4,8 (4.1) min. 2. Tolerances: X.XX = 0.02 (X.X = 0.5) X.XXX = 0.01 (X.XX = 0.25) 0.50 3. Weight: 0.15 lbs (66 g) approx (12.70) Thermal Resistance Information Derating Curve Maximum Power Dissipation vs Ambient Temperature and Air Flow without heatsink 30 28 Natural Convection 26 20 ft./min. (0.1 m/s) 24 Air Flow Rate Typical R ca 22 100 ft./min. (0.5 m/s) 20 Natural Convection 10.1 C/W 18 20 ft. / min (0.1 ms) 16 200 ft./min. (1.0 m/s) 100 ft./min (0.5 ms) 8.0 C/W 14 200 ft./min (1.0 ms) 5.4 C/W 12 300 ft./min. (1.5 m/s) 10 300 ft./min (1.5 ms) 4.4 C/W 8 400 ft./min (2.0 ms) 3.4 C/W 6 400 ft./min. (2.0 m/s) 4 R = Thermal resistance case to ambient ca 2 0 010 20 30 40 50 60 70 80 90 100 Ambient Temperature ,Ta (C) Power Dissipated ,Pd (W)