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75ꢀ350 Watts
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
Input Current
• See tables
• See tables
Efficiency
• See tables
Isolation Voltage
• 1500 VDC Input to Output
1500 VDC Input to Case
1500 VDC Output to Case
Input Reverse Voltage • None
Protection
7
Isolation Resistance
Isolation Capacitance • QSB75-200: 100 pF typical,
• 10 Ω
Input Filter
• Pi network
Undervoltage Lockout • QSB75-150: 24 Vin: - turn on 8.8 V,
turn off 8.0 V for 9-36 V,
QSB350: 1000 pF typical
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
Switching Frequency
• 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
3
3
Power Density
MTBF
• QSB75: 45.4 W/in , QSB100: 60.5 W/in ,
3
3
QSB150: 57.2 W/in , QSB200: 70.3 W/in ,
3
QSB350: 123.0 W/in
• QSB75 & 100: 730 kHrs
QSB150 & 200: 1 MHrs
QSB350: 658 kHrs
Input Surge
• 24 Vin: 50 VDC for 100 ms
48 Vin: 100 VDC for 100 ms
typical to MIL-HDBK-217F at 25 °C, GB
Output
Environmental
Output Voltage Trim
Initial Set Accuracy
Line Regulation
•
•
•
10%, see application notes
1.5% max
0.2% max measured from high line
to low line
Operating Base Plate • -40 °C to +100 °C, see derating curves
Temperature
Storage Temperature • -55 °C to +105 °C
Load Regulation
•
0.2% max measured from 0-100% load
Operating Humidity
Cooling
• Up to 90% non-condensing
• Base plate cooled, see derating curves
• 30 g pk, halfsink wave for 18 ms
3 pulses per face, all 6 faces tested
• 5-500 Hz st 3 g, 10 mins per axis
Transient Response
• 5% max deviation, recovery to within
1% in 500 µs, 25% step load change
• 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)
Shock
Ripple & Noise
Vibration
EMC & Safety
Overvoltage Protection • 115-140%
Short Circuit Protection • Continuous
Thermal Shutdown
Emissions
• 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
• Case temperature >105 °C
• 0.03%/°C
Temperature
Coefficient
ESD Immunity
Radiated Immunity
EFT/Burst
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
• See notes 2 & 3
• Compensates up to 10% of Vout nominal,
total of output trim and remote sense
Surge
Conducted Immunity
Remote On/Off
Remote Sense
Safety Approvals
* Recommended protection SMCJ40A for 24 Vin, SMCJ78A for 48 Vin
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