DC DC
75 350 Watts
QSB Series
xppower.com
•
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
Input Voltage Range
Input Current
Input Reverse Voltage
Protection
Input Filter
Undervoltage Lockout
Input Surge
General
• See tables
• See tables
• None
Efficiency
Isolation Voltage
• Pi network
• QSB75-150: 24 Vin: - turn on 8.8 V,
turn off 8.0 V for 9-36 V,
QSB200: 24 Vin -turn on 9.6 V,
turn off 8.8 V,
QSB75-200: 48 Vin - turn on 17.0 V,
turn off 16.0 V,
QSB350: 24 Vin - turn on 17.0 V,
turn off 16.0 V,
QSB350: 48 Vin - turn on 35.0 V,
turn off 33.0 V
• 24 Vin: 50 VDC for 100 ms
48 Vin: 100 VDC for 100 ms
Isolation Resistance
Isolation Capacitance
Output
• ±10%, see application notes
• ±1.5% max
• ±0.2% max measured from high line
to low line
Load Regulation
• ±0.2% max measured from 0-100% load
Transient Response
• 5% max deviation, recovery to within
1% in 500 µs, 25% step load change
Ripple & Noise
• 3.3 & 5 V models: 100 mV pk-pk
12 & 15 V models: 150 mV pk-pk
24 V & 28 V models: 280 mV max pk-pk
20 MHz bandwidth (see note 1)
Overvoltage Protection • 115-140%
Short Circuit Protection • Continuous
Thermal Shutdown
• Case temperature >105 °C
Temperature
• ±0.03%/°C
Coefficient
Current Limit
• 110-140% nominal output for 75 & 150 W
110-160% nominal output for 100 W
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
Output Voltage Trim
Initial Set Accuracy
Line Regulation
Switching Frequency
Power Density
MTBF
• See tables
• 1500 VDC Input to Output
1500 VDC Input to Case
1500 VDC Output to Case
• 107 Ω
• QSB75-200: 100 pF typical,
QSB350: 1000 pF typical
• QSB75: 300 kHz typical
QSB100, 150 & 200: 250 kHz typical
QSB350 (3V3 & 5 V): 300 kHz typical
QSB350 (12, 24 & 28 V): 330 kHz typical
• QSB75: 45.4 W/in3, QSB100: 60.5 W/in3,
QSB150: 57.2 W/in3, QSB200: 70.3 W/in3,
QSB350: 123.0 W/in3
• QSB75 & 100: 730 kHrs
QSB150 & 200: 1 MHrs
QSB350: 658 kHrs
typical to MIL-HDBK-217F at 25 °C, GB
Environmental
Operating Base Plate
Temperature
Storage Temperature
Operating Humidity
Cooling
• -40 °C to +100 °C, see derating curves
• -55 °C to +105 °C
• Up to 90% non-condensing
• Base plate cooled, see derating curves
EMC & Safety
Emissions
ESD Immunity
Radiated Immunity
EFT/Burst
Surge
Conducted Immunity
Safety Approvals
• EN55022, level A conducted with external
components, see test reports for further
details
• EN61000-4-2, level 2, Perf Criteria B
• EN61000-4-3, 3 V/m, Perf Criteria A
• EN61000-4-4, level 1, Perf Criteria A*
• EN61000-4-5, level 1, Perf Criteria A*
• EN61000-4-6, 3 V rms
Perf Criteria A
• QSB150 & QSB200: UL60950-1
* Recommended protection SMCJ40A for 24 Vin,
SMCJ78A for 48 Vin
