DC-DC Power Supplies QSB300 300 Watts Regulated Single Output 4:1 Input Range Industry Standard Half Brick Package Up to 90% Efficiency Baseplate-cooled -40 C to +100 C Operating Temperature Remote On/Off & Remote Sense 3 Year Warranty This specification describes the features and functions of QSB300 series of isolated Dimensions: DC-DC Converters. These are highly efficient, reliable and compact, high power QSB: density, single output DC/DC converters. The modules can be used in a wide range 2.4 x 2.28 x 0.5 (60.9 x 57.9 x 12.7 mm) of applications from telecommunications, data communications, wireless communications to servers. Models & Ratings Output Current Input Current Max. Capacitive (3) (1) Input Voltage Output Voltage Efficiency Model Number (4) Nom. Peak No Load Full Load Load (6) 5.0 V 60.0A 70.00 A 200mA 14.21A 88.0% 10000 F QSB30024S05 (6) 12.0V 25.0A 29.16A 200mA 13.89A 90.0% 10000 F QSB30024S12 24V (5) 24.0V 12.5A 14.58A 100mA 14.21A 88.0% 4700 F QSB30024S24 (9-36V) (5) 28.0V 10.7A 12.50A 100mA 14.11A 88.0% 4700 F QSB30024S28 (5) 48.0V 6.25A 7.29A 100mA 14.37A 87.0% 2200 F QSB30024S48 5.0V 60.0A 70.00 A 100mA 6.94A 90.0% 10000 F QSB30048S05 12.0V 25.0A 29.16A 100mA 6.94A 90.0% 10000 F QSB30048S12 48V 24.0V 12.5A 14.58A 80mA 6.98A 89.0% 4700 F QSB30048S24 (18-75 V) 28.0V 10.7A 12.50A 80mA 6.94A 90.0% 4700 F QSB30048S28 (5) 48.0V 6.25A 7.29A 80mA 7.02A 89.0% 2200 F QSB30048S48 Notes 1. Add suffix N to the model number to receive the unit with negative logic 4. Peak Current is for max duration of 3s with 10% duty cycle. Average output Remote On/Off. power not to exceed 300W. 2. Minimum of 1000F for 24Vin and 220F for 48 Vin required on input. 5. Models require minimum 220 F capacitor across output rails to maintain 3. Measured at nominal input voltage. regulation. 6. QSB30025S05 requires minimum 470F and QSB30024S12 requires minimum 330F across output rails to maintain regulation. Mechanical Details 1.14 0.18 min. (29.0) (4.6) 0.08 Mounting hole diameter: PIN CONNECTIONS 0.126 (3.2) clearance hole (2.03) Pin Function Pins 1,4, 1 +Vin 5 & 9 2 Remote On/Off 4 5 1.20 (30.5) 3 Case 4 -Vin 1.40 3 6 5 -Vout (35.6) 2.40 6 -Sense 0.60 BOTTOM VIEW 7 (61.0) 7 Trim (15.2) 2.00 8 +Sense 2 8 (50.8) 9 +Vout 0.04 (1.02) 1 9 Pins 2,3, Notes 6,7 & 8 1. All dimensions are in inches (mm) 2. Weight: 0.25 lbs (114 g)approx 1.90 0.50 3. Tolerances: X.XX = 0.02 (X.X = 0.5) (48.3) (12.7) X.XXX = 0.01 (X.XX = 0.25) 2.28 SIDE VIEW (57.9) www.xppower.com 1DC-DC Power Supplies QSB300 Input Characteristic Minimum Typical Maximum Units Notes & Conditions Input Voltage 9/18 36/75 VDC 24 V/48 V Input Current See Models and Ratings table Input Reverse Voltage Protection None Input Filter Pi Network Turn On: 8.8 Turn Off: 8.0 24 Vin Undervoltage Lockout V Turn On: 17.0 Turn Off: 16.0 48 Vin 50 VDC for 100 ms 24 Vin Input Surge V 100 VDC for 100 ms 48 Vin Output Characteristic Minimum Typical Maximum Units Notes & Conditions Output Voltage Trim 10 % See Application Notes Initial Set Accuracy 1.5 % At full load Start Up Time 120 ms Line Regulation 0.2 % Measured from high line to low line Load Regulation 0.2 % Measured from 0-100% load Deviation, recovery to within 1% in 500 s, Transient Response 5 % 25% step load change 100 3.3 & 5 V models 120 12 V models Ripple & Noise mV pk-pk 280 24 & 28 V models 480 48 V models, 20 MHz bandwidth (see note 1) Overvoltage Protection 115 140 % Short Circuit Protection Continuous Thermal Shutdown Case temperature >105 C typical Temperature Coefficient 0.03 %/C Current Limit 120 140 % Nominal Output Notes 1. Output Ripple and Noise measured with 10 F tantalum and 1 F ceramic capacitor across output. General Characteristic Minimum Typical Maximum Units Notes & Conditions Efficiency 87 90 % See Models and Ratings table 1500 VDC Functional insulation Isolation: Input to Output 1500 VDC Input to Case Output to Case 1500 VDC Isolation Resistance 10 M Isolation Capacitance 2000 pF Switching Frequency 220 kHz Case Material Plastic (DAP) with aluminium base plate. UL94V-0 rated. Meets EN45545-2 Potting Material Epoxy UL94V-0 Pin Material Copper with nickel and matte tin plate Solder Profile 260 C With iron 450C, 5s max. 1.5mm from case 10s max Water Wash Use deionized water, do not soak. Dry thoroughly 3 Power Density 109 W/in Mean Time Between Failure 300 kHrs MIL-HDBK-217F at 25 C GB Weight 0.25 (114) lb (g) www.xppower.com 2