WRA-ZMD-20W&WRB-ZMD -20W Series
20W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
SELECTION GUIDE
Input voltage
range
Output
Order code
Output voltage
Efficiency typ.
current max.
WRB2403ZMD-5500
WRB2405ZMD-20W
WRB2412ZMD-20W
WRB2415ZMD-20W
WRA2405ZMD-20W
WRA2412ZMD-20W
WRA2415ZMD-20W
WRB4803ZMD-5500
WRB4805ZMD-20W
WRB4812ZMD-20W
WRB4815ZMD-20W
WRA4805ZMD-20W
WRA4812ZMD-20W
WRA4815ZMD-20W
9 – 36 VDC
9 – 36 VDC
9 – 36 VDC
9 – 36 VDC
9 – 36 VDC
9 – 36 VDC
9 – 36 VDC
18 – 75 VDC
18 – 75 VDC
18 – 75 VDC
18 – 75 VDC
18 – 75 VDC
18 – 75 VDC
18 – 75 VDC
3.3 VDC
5 VDC
5500 mA
4000 mA
1670 mA
1330 mA
± 2000 mA
± 835 mA
± 665 mA
5500 mA
4000 mA
1670 mA
1330 mA
± 2000 mA
± 835 mA
± 665 mA
85 %
88 %
86 %
86 %
88 %
87 %
87 %
85 %
88 %
87 %
87 %
89 %
88 %
88 %
12 VDC
15 VDC
± 5 VDC
± 12 VDC
± 15 VDC
3.3 VDC
5 VDC
FEATURES
◆High power density in 1" x 2" metal package
◆Ultra wide 4 : 1 input range
◆Extended operating temperature range
–40℃to +85℃max.
12 VDC
15VDC
◆No minimum load required
◆I/O-isolation 1500 VDC
± 5 VDC
± 12 VDC
± 15 VDC
◆Remote On/Off
◆Adjustable output voltage
◆Industry standard footprint
◆Shielded metal case with insulated baseplate
Input Specifications
◆Optional heatsink
24 Vin models:
50 mA typ.
Input current at no load
◆Lead free design - RoHS compliant
◆3-year product warranty
48 Vin models:
24 Vin models:
48 Vin models:
24 Vin models:
48 Vin models:
35 mA typ.
1000 mA typ.
500 mA typ.
50 V max.
Input current at full load
MODEL SELECTION
①
②
③
④
⑤
⑥
⑦
Surge voltage
WRB 24 12 Z M D -20W(1670)
(100 msec. max.)
100 V max.
①Product Series
②Input Voltage
5 V / ms, max.
Input voltage variation (dv/df)
③Output Voltage ④Wide (4:1) Input Range
⑤Metal Shield ⑥2" x 1"DIP Package Style
⑦Rated Power(Output current)
(complies to ETS 300 132 part. 4.4)
Start-up voltage / under voltage
lockout
24 Vin models:
48 Vin models:
9 VDC / 7.5 VDC typ.
18 VDC / 15 VDC typ.
EN 55022 level A, FCC part 15, level A with
external capacitor (see application note)
APPLICATIONS
Conducted noise(input)
The WRA-ZMD-20W & WRB-ZMD-20W
Series is a family of high performance 20W
DC/DC converter modules featuring ultra wide
4:1 input voltage ranges in a ultra compact
2“x1“ low profile package with industry-standard
footprint. A very high efficiency al-lows an
operating temperature range of –40°C to 85°C.
Further standard features include remote On/Off,
output voltage trimming,over voltage protection
and short-circuit protection.
ESD (input)
EN 61000-4-2, perf. criteria B
EN 61000-4-4, perf. criteria B
EN 61000-4-5, perf. criteria B
Fast transient (input)
Surge (input)
General Specifications
(MIL-HDBK-217F
Typical applications for these converters are
battery operated equipment and distributed
power architectures in communication and
industrial electronics,everywhere where isolated,
tightly regulated voltages are required.
Reliability, calculated MTBF
>560000 h @ + 25 °C
ground benign)
Isolation voltage (60 sec.)
Isolation capacity
– Input/Output
– Input/Output
– Input/Output
1500 VDC
1500 pF max
Isolation resistance
Switching frequency (fixed)
Vibration
>1000 M Ohm
400 kHz typ. (pulse width modulation PWM)
10-55Hz, 10G, 30 minutes along X,Y,Z
3.0 to 12 VDC or open circuit.
0 to 1.2 VDC or short circuit pin 2 and pin 6
2.5 mA typ.
– On:
Remote On/Off
– Off:
MICRODC RESERVES THE COPYRIGHT
– Off idle current:
Safety standards
UL 60950
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3