25-30 Watts
WF Series
xppower.com
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2:1 Input Range
Efficiency to 85%
Input Pi Filter
Single, Dual & Triple Outputs
Remote On/Off
Six-sided Metal Case
External Output Trim
Specification
Input
General
Input Voltage Range
Input Current
• See table
• See Table
• Pi network
Efficiency
• See table
Isolation Voltage
Isolation Resistance
Switching Frequency
MTBF
• 500 VDC min ꢃꢁ000 VDC for ‘U’ versionꢄ
• 109 ohms min
Input Filter
Undervoltage Lockout • Turn On >70% nominal input
• ꢁ00 kHz typixal
Turn Off <65% nominal input
• >800 kHrs to MIL-STD-±17F
Output
Environmental
Initial Set Accuracy
• Single output models: ±±% maꢀ
Dual output models: ±±% maꢀ V1
±ꢁ% maꢀ V±
Operating Temperature • -±5 ˚C to +100 ˚C ꢃsee derating xurveꢄ
Storage Temperature
EMI/RFI
• -40 ˚C to +100 ˚C
• Siꢀ-sided xontinuous shield
Triple output models: ±±% maꢀ V1
±5% maꢀ V± ꢂ Vꢁ
EMC & Safety
Output Voltage
Adjustment
• ±10% ꢃeꢀxept triple output modelsꢄ
Emissions
• EN550±±, level A Conduxted
EN550±±, level A Radiated
Minimum Load
• Triple output models only
• ±1.0% maꢀ at full load
ESD Immunity
• EN61000-4-±, level ±
Perf Criteria A
Voltage Balance
Dual Output
Radiated Immunity
Conducted Immunity
Safety Approvals
• EN61000-4-ꢁ ꢁ V/m
Perf Criteria A
Line Regulation
Load Regulation
Transient Response
Ripple & Noise
• ±0.5% maꢀ single ꢂ dual output models,
±1.0% maꢀ triple output models
• EN61000-4-6 ꢁ V rms
Perf Criteria A
• ±1.0% maꢀ single ꢂ dual output models,
±5.0% maꢀ triple output models
• UL60950-1 for ‘U’ versions only
• 5% maꢀ deviation, rexovery to within
1% in 500 µs for a ±5% step load xhange
• 10 mV RMS maꢀ
75 mV pk-pk maꢀ, ±0 MHz BW
Short Circuit Protection • Continuous, trip ꢂ restart ꢃhixxup modeꢄ
with auto rexovery
Temperature
Coefficient
• 0.0±%/˚C maꢀ
Remote On/Off
• On >5.5 VDC or open xirxuit
Off <1.8 VDC or short to Vin