DC/DC Converter
VRA_LD-20WR3 & VRB_LD-20WR3 Series
20W,wide input isolated & regulated dual /
single output DC/DC converter
FEATURES
wide input voltage rang (2:1)
High efficiency up to 90%
No-load power consumption as low as 0.15W
Isolation voltage :1.5KVDC
output short circuit protection, over-voltage
protection, over-current protection
Operating temperature range: -40℃ to +85℃
Meet CISPR32/EN55032 CLASS A, without
external components
Six-sided metal shielding package
Reverse voltage protection available with
A2S(Chassis mounting) or A4S(35mm DIN-Rail
mounting)
EN60950 approval
Patent Protection RoHS
VRA_LD-20WR3 & VRB_LD-20WR3 series are isolated 20W DC-DC products with 2:1 input voltage. They feature efficiency up to 90%, 1500VDC
isolation, operating temperature of -40℃ to +85℃, output short circuit protection, over-voltage protection, over-current protection and EMI
meets CISPR32/EN55032 CLASS A, without external components which make them widely applied in data transmission device, battery
power supplies, Tele-comunication device, distributed power supply system, remote control system, industrial robot system fields. And
extension package A2S and A4S also enable them with reverse voltage protection.
Selection Guide
③
Efficiency (%,Mi
n./Typ.)
@ Full Load
Input Voltage (VDC)
Output
Output Current
Max. Capacitive
①
Certification
Part No.
④
Nominal
Output Voltage
(VDC)
②
Load (µF)
Max.
(mA)(Max./Min.)
(Range)
12
(9-18)
--
VRB121DLD-20WR3
20
110
182/9
86/88
66
VRA2405LD-20WR3
VRA2409LD-20WR3
VRA2412LD-20WR3
VRA2415LD-20WR3
VRA2424LD-20WR3
VRB2403LD-20WR3
VRB2405LD-20WR3
VRB2409LD-20WR3
VRB2412LD-20WR3
VRB2415LD-20WR3
VRB2424LD-20WR3
VRA4805LD-20WR3
VRA4812LD-20WR3
VRA4815LD-20WR3
VRB4803LD-20WR3
VRB4805LD-20WR3
VRB4809LD-20WR3
VRB4812LD-20WR3
VRB4815LD-20WR3
VRB4824LD-20WR3
±5
±9
±12
±15
±24
3.3
5
±2000/0
±1111/0
±834/0
±667/0
±417/0
5000/0
4000/0
2222/0
1667/0
1333/0
834/0
84/86
86/88
86/88
86/88
86/88
84/86
88/90
87/89
87/89
88/90
88/90
84/86
86/88
87/89
84/86
88/90
87/89
87/89
88/90
88/90
4800
1000
800
CE
--
625
500
24
(18-36)
40
10000
10000
4700
1600
1000
500
9
12
15
24
±5
±12
±15
3.3
5
±2000/0
±834/0
±667/0
5000/0
4000/0
2222/0
1667/0
1333/0
834/0
4800
800
CE
625
10000
10000
4700
1600
1000
500
48
(36-75)
80
9
12
15
24
Notes：①Series with suffix “H” are heat sink mounting; series with suffix “A2S” are chassis mounting，with suffix “A4S” are DIN-Rail mounting, for example
VRB2405LD-20WHR3A2S is chassis mounting of with heat sink,VRB2405LD-20WR3A4S is DIN-Rail mounting of without heat sink; If the application has a
higher requirement for heat dissipation, you can choose modules with heat sink;
②Absolute maximum rating without damage on the converter, but it isn't recommended;
③Efficiency is measured In nominal input voltage and rated output load;A2S (wiring) and A4S (rail) Model due to input reverse polarity protection,
minimum efficiency greater than Min.-2 is qualified;
④ The capacitive loads of positive and negative outputs are identical.
2018.08.16-A/4
Page 1 of 9
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