20 Watts xppower.com WE Series High Power Density Fully Regulated Outputs Efficiency to 86% Low Voltage Outputs Remote On/Off 2:1 Input Range 2.5, 3.3 & 5 V Versions Specification Input General Input Voltage Range 24 V (18-36 VDC) Efficiency See table 48 V (36-72 VDC) Isolation 500 VDC Input to Output Input Current See table Switching Frequency 500 kHz typical Input Filter Pi network MTBF 1,500 kHrs to MIL-HDBK-217F Undervoltage Lockout Turn On > 62% nominal input Turn Off < 61% nominal input Environmental Operating Temperature -40 C to +70 C Output Case Temperature +100 C max Output Voltage 2.5, 3.3, 5 V single Storage Temperature -40 C to +100 C Output Voltage 10% EMI/RFI Six-sided continuous shield Adjustment Minimum Load 10% EMC & Safety Line Regulation 0.2% max Emissions EN55022, level A Conducted Load Regulation 1.0% max for 25% to 100% load change EN55022, level A Radiated Transient Response <500 s for a 25% step load change ESD Immunity EN61000-4-2, level 2 Ripple & Noise 75mV pk-pk max, 20MHz BW Perf Criteria A Overcurrent Protection 110-140% of nominal Radiated Immunity EN61000-4-3 3 V/m Short Circuit Protection Continuous Perf Criteria A Conducted Immunity EN61000-4-6 3 V rms Temperature 0.02 /C max Coefficient Perf Criteria A Remote On/Off On > 5.5 VDC or open circuit Off < 1.8 VDC, control common referenced to -Vin DC-DCDC-DC WE Series Models and Ratings (2) Input Current Input Output Output Model Efficiency (1) Voltage Voltage Current No Load Full Load Number 2.5 VDC 5000 mA 35 mA 645 mA 81% WE320 18-36 VDC 3.3 VDC 5000 mA 45 mA 828 mA 83% WE300 5.0 VDC 4000 mA 45 mA 981 mA 84% WE301 2.5 VDC 5000 mA 25 mA 318 mA 82% WE420 36-72 VDC 3.3 VDC 5000 mA 35 mA 410 mA 84% WE400 5.0 VDC 4000 mA 35 mA 485 mA 86% WE401 Notes 1. Nominal input voltage is 24 VDC for WE3xx model numbers and 48 VDC for WE4xx model numbers. 2. Input current is at nominal input voltage. Mechanical Details All dimensions are in inches (mm) Weight: 0.08 lbs (35 g) approx. Case Material: Copper with non-conductive base 2.00 (50.8) 0.40 (10.2) 0.22 (5.6) min 0.10 1.80 (2.54) (45.7) 0.20 (5.1) 6 3 0.20 (5.1) 0.40 (10.2) 1.00 2 (25.4) BOTTOM VIEW 5 0.40 (10.2) 0.40 (10.2) 1 0.20 (5.1) 4 0.04 (1.0) 0.10 (2.54) +Vout (6) +Vout (6) +Vout (6) TRIM DOWN PIN CONNECTIONS TRIM (4) TRIM (4) TRIM (4) Pin Function TRIM UP 1 Remote On/Off 2 -V input +Vout (5) +Vout (5) +Vout (5) 3 +V input 4 Trim Typical resistor values To Trim Up To Trim Down 5 -V output 6k8 = +10% 6k8 = -10% 6 +V output 100k = +1% 100k = -1% 1-Dec-06