DC/DC Converter
URB1D_LD-20WR3 Series
20W isolated DC-DC converter with Ultra-wide Input
and Regulated Single Output
FEATURES
Ultra-wide 4:1 input voltage range
Reinforced I/O isolation test voltage 2.25k VDC
Operating ambient temperature range -40℃ to
+85℃
Input under-voltage protection, output short
circuit, over-current, over–voltage protection
Low output ripple & noise
EN50121-3-2 & CISPR32/EN55032 CLASS A EMI
compliant without external components
EN50155/EN60950 Approval
Designed to meet IEC60950/UL60950 safety
standards
Input Reverse Polarity Protection available with
Chassis (A2S) or 35mm DIN-Rail mounting (A4S)
version
Industry standard pin-out
Patent Protection RoHS
URB1D_LD-20WR3 20W series of isolated DC-DC converter products have an ultra-wide 4:1 input voltage and feature efficiencies of up to
87%. Input to output isolation is tested with 2250VDC and the converters safely operate in an ambient temperature of -40℃ to +85℃, input
under-voltage protection, output short circuit, over-current, over–voltage protection and are offered with various mounting options ideally
suiting electronic equipment and railway vehicle applications using 72V, 96V and 110V battery voltages.
Selection Guide
Input Voltage (VDC)
Output
Current(mA)
Full Load
Efficiency (%)
Max. Capacitive
Load(µF)
①
③
Part No.
Certification
Nominal
(Range)
②
Max.
Voltage (VDC)
Min./Typ.
Max./Min.
5000/0
4000/0
1667/0
1333/0
833/0
URB1D03LD-20WR3
URB1D05LD-20WR3
URB1D12LD-20WR3
URB1D15LD-20WR3
URB1D24LD-20WR3
3.3
5
80/82
10000
10000
1600
1000
470
83/85
110
170
CE
12
15
24
84/86
(40-160)
84/86
85/87
Note:
① Use “H” suffix for heat sink mounting, “A2S” suffix for chassis mounting and “A4S” suffix for DIN-Rail mounting. We recommend to choose modules with a
heat sink for enhanced heat dissipation and applications with extreme temperature requirements;
② Absolute maximum stress rating without damage (not recommended);
③ Efficiency is measured at nominal input voltage and rated output load; efficiencies for A2S and A4S Model’s is decreased by 2% due to the input reverse
polarity protection circuit.
2018.10.11-A/3
Page 1 of 9
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation