7.5 Watts
WR Series
xppower.com
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2:1 Input Range
DIP-24 Metal Package
-25 °C to +100 °C Operating Temperature
1500 VDC Isolation
Efficiency to 83%
Input Pi Filter
Continuous Short Circuit Protection
Specification
Input
General
Input Voltage Range
• 12 V (9-18 VDC)
Efficiency
• See table
24 V (18-36 VDC)
48 V (36-72 VDC)
Isolation Voltage
Switching Frequency
MTBF
• 1500 VDC min Input to Output (1000 MΩ)
• 300 kHz typical
Input Current (no load) • See table
Input Filter • Pi network
• 900 kHrs to MIL-HDBK-217F
Undervoltage Lockout • Turn On >70% nominal input
Environmental
Turn Off <65% nominal input
Operating Temperature • -25 ˚C to +100 ˚C (see ꢂeratinꢁ curve)
Case Temperature
• +100 ˚C max
Output
Storage Temperature
• -40 ˚C to +100 ˚C
Output Voltage
Start Up Delay
• See table
• 900 ms max
EMC
Initial Set Accuracy
Line Regulation
Load Regulation
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2ꢀ0% max
0ꢀ2% max
Emissions
• EN55022ꢃ level A conꢂucteꢂ
EN55022ꢃ level A raꢂiateꢂ
0ꢀ5% max sinꢁle output moꢂelsꢃ
1ꢀ0% max ꢂual output moꢂelsꢃ
for 75% loaꢂ chanꢁe
ESD Immunity
• EN61000-4-2ꢃ level 2
Perf Criteria A
Radiated Immunity
Conducted Immunity
• EN61000-4-3 3 V/m
Perf Criteria A
Cross Regulation
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1ꢀ5% on ꢂual output moꢂels
Transient Response
• <1% max ꢂeviationꢃ recovery to within
1% in 200 µs for a 50% loaꢂ chanꢁe
• EN61000-4-6 3 V rms
Perf Criteria A
Ripple & Noise
• 100 mV max pk-pkꢃ 20 MHz BW
• 110-130% constant current
Overload
Characteristics
Short Circuit Protection • Continuous with auto recovery
Temperature
Coefficient
• 0ꢀ05%/˚C max