WRA_ZS-2W&WRB_ZS -2W Series
Wide Input,Isolated& Regulated Dual/Single Output SIP-8 DC/DC Converter
SELECTION GUIDE
Output current
Efficiency
Input voltage range
Order code
Output voltage
max.
typ.
WRB2403ZS-2W
WRB2405ZS-2W
WRB2412ZS-2W
WRB2415ZS-2W
WRA2403ZS-2W
WRA2405ZS-2W
WRA2412ZS-2W
WRA2415ZS-2W
WRA2418ZS-2W
WRB4803ZS-2W
WRB4805ZS-2W
WRB4812ZS-2W
WRB4815ZS-2W
WRA4805ZS-2W
WRA4812ZS-2W
WRA4815ZS-2W
3.3 VDC
5 VDC
500 mA
71 %
400 mA
165 mA
135 mA
±250 mA
±200 mA
±85 mA
±65 mA
±56 mA
500 mA
400 mA
165 mA
135 mA
±200 mA
±85 mA
±65 mA
76 %
79 %
80 %
76%
12 VDC
15 VDC
±3.3 VDC
±5 VDC
±12 VDC
±15 VDC
±18VDC
3.3 VDC
5 VDC
9 – 36 VDC
(24 VDC nominal)
78 %
77 %
79 %
79 %
70 %
72 %
78 %
78 %
70 %
76 %
76 %
FEATURES
◆Ultra-wide 4:1 input range
◆SIP-8 package
◆Full SMD design
12 VDC
15 VDC
±5 VDC
±12 VDC
±15 VDC
18 – 75 VDC
◆Temperature range –40°C to +85°C
◆High efficiency
(48 VDC nominal)
◆Excellent load and line regulation
◆ Indefinite short-circuit protection
◆ I/O isolation 1500 VDC
◆ Remote On/Off control
◆ Fully RoHS compliant
◆ 3-year product warranty
*Input voltage can't exceed this value,or will cause the permanent damage.
Input Specifications
Parameter
results
20 mA typ.
15 mA typ.
110 mA typ.
55 mA typ.
50 V max.
100 V max.
Input current at no load (nominal input)
Input current at full load (nominal input)
Surge voltage (100 msec. max.)
24 Vin models:
48 Vin models:
MODEL SELECTION
WRA 24 05 Z S -2W
①
②
③
④
⑤
⑥
24 Vin models:
48 Vin models:
24 Vin models:
①Product Series ②Input Voltage
③Output Voltage ④Wide (4:1) Input Range
⑤SIP8 Package Style ⑥Rated Power
48 Vin models:
Reverse voltage protection
Input Filter
0.5 A max.
capacitor type
<1ms (at nominal input and
resistive load)
DESCRIPTION
Start up time
The WRA(B)-ZS-2W series is a new family of isolated
2W dc-dc converter modules with regulated output,
featuring ultra-wide 4:1 input voltage ranges of 9-36VDC
or 18-75VDC.The product comes in a ultra-compact SIP-9
plastic package.
OUTPUT SPECIFICATIONS
An excellent efficiency up to 84% allows –40°C to +85°C
operation temperatures at full load. Further features
include remote On/Off control and continuous short circuit
protection.Typical applications for these ultra-compact
converters are battery operated equipment and distributed
power architectures in communication, instrumentation
and industrial electronics, everywhere where space on the
PCB is critical.1) where the voltage of the input power
supply is wide range (voltage range ≤4:1);
Parameter
results
Voltage set accuracy
±2 %
0.5 % max.
Regulation
– Input variation Vin min. to Vin max.
– Load variation 25 – 100 %
single output models:
dual output models:
0.75 % max.
2.0 % max. (balanced load)
25 % of rated max current (operation
at lower load condition is safe but a
higher output ripple will be
experianced)
Minimum load
2) where isolation is necessary between input and output
(isolation voltage ≤1500VDC);
Temperature coefficient
±0.1 %/°C
Ripple and noise (20 MHz Bandwidth)
Transient response (25 % load step change)
50 mVpk-pk max
3) where the regulation of the output voltage and the
output ripple noise are demanded.
300 µs max.
constant current (automatic
Short circuit protection
Capacitive load
recovery)
3.3 VDC / 5 VDC models:
12 VDC / 15VDC models:
±5 VDC / ±12 VDC models:
2’200 µF max. / 1’000 µF max.
170 µF max. / 110 µF max.
470 µF max. / 100 µF max.
(each output)
MICRODC RESERVES THE COPYRIGHT
±15 VDC models:
47 µF max. (each output)
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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