WRA_ZS-2W
＆
WRB_ZS -2W
Series
WIDE INPUT,ISOLATED & REGULATED Dual/Single Output SIP-8 DC/DC Converter
SIP-8
SELECTION GUIDE
Ordercode
WRB2403ZS-2W
WRB2405ZS-2W
WRB2412ZS-2W
WRB2415ZS-2W
WRA2403ZS-2W
9 – 36 VDC
(24 VDC nominal)
Input voltage
range
Output voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
±3.3 VDC
±5 VDC
±12 VDC
±15 VDC
±18VDC
3.3 VDC
5 VDC
18 – 75 VDC
(48 VDC nominal)
12 VDC
15 VDC
±5 VDC
±12 VDC
±15 VDC
Output current
max.
500 mA
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
Effciency
typ.
71 %
76 %
79 %
80 %
76%
78 %
77 %
79 %
79 %
70 %
72 %
78 %
78 %
70 %
76 %
76 %
FEATURES
◆
Ultra-wide 4:1 input range
◆
SIP-8 package
◆
Full SMD design
◆
Temperature range –40°C to +85°C
◆
High effciency
◆
Excellent load and line regulation
◆
Indefnite short-circuit protection
◆
I/O isolation 1500 VDC
◆
Remote On/Off control
◆
Fully RoHS compliant
◆
3-year product warranty
WRA2405ZS-2W
WRA2412ZS-2W
WRA2415ZS-2W
WRA2418ZS-2W
WRB4803ZS-2W
WRB4805ZS-2W
WRB4812ZS-2W
WRB4815ZS-2W
WRA4805ZS-2W
WRA4812ZS-2W
WRA4815ZS-2W
*Input voltage can't exceed this value,or will cause the permanent damage.
Input Specifications
Parameter
Input current at no load (nominal input)
24 Vin models:
48 Vin models:
Input current at full load (nominal input)
24 Vin models:
48 Vin models:
Surge voltage (100 msec. max.)
24 Vin models:
48 Vin models:
Reverse voltage protection
Input Filter
Start up time
20 mA typ.
15 mA typ.
110 mA typ.
55 mA typ.
50 V max.
100 V max.
0.5 A max.
capacitor type
<1ms (at nominal input and
resistive load)
results
MODEL SELECTION
WRA 24 05 Z S -2W
①
②
③
④
⑤
⑥
①Product
Series
②Input
Voltage
③Output
Voltage
④Wide
(4:1) Input Range
⑤SIP8
Package Style
⑥
Rated Power
DESCRIPTION
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 9-36 VDC or
18-75 VDC. The product comes in a ultra-compact SIP-9
plastic package.
An excellent effciency 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);
2) where isolation is necessary between input and output
(isolation voltage ≤1500VDC);
3) where the regulation of the output voltage and the
output ripple noise are demanded.
OUTPUT SPECIFICATIONS
Parameter
Voltage set accuracy
Regulation
–
Input variation Vin min. to Vin max.
–
Load variation 25
–
100 %
single output models:
dual output models:
0.5 % max.
0.75 % max.
2.0 % max. (balanced load)
25 % of rated max current
(operation at lower load
condition is safe but a higher
output ripplewill be
experianced)
±0.1 %/°C
50 mVpk-pk max
300 µs max.
constant current (automatic
recovery)
2’200 µF max. / 1’000 µF max.
170 µF max. / 110 µF max.
470 µF max. / 100 µF max.
(each output)
47 µF max. (each output)
results
±2
%
Minimum load
Temperature coefficient
Ripple and noise (20 MHz Bandwidth)
Transient response (25 % load step change)
Short circuit protection
Capacitive load
3.3 VDC / 5 VDC models:
12 VDC / 15VDC models:
±5
VDC /
±12
VDC models:
±15
VDC models:
MICRODC reserves the copyright
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 2
WRA_ZS-2W
＆
WRB_ZS -2W
Series
General Specifications
Parameter
Temperature ranges
–
Operating
–
Case temperature
–
Storage
results
–40°C to +85°C
+90°C max.
–55°C to +105°C
3.3 %/K above 70°C
95 % rel. H max.
>1 Mio h
1’500 VDC
500 pF max.
>1‘000 M Ohm
100 to 650 kHz (PFM)
–
On:
–
Off:
–
Off stand by input current
<0.6 VDC or open circuit
2.9 to 15 VDC
1 mA typ / 3 mA max.
Derating (convection cooling)
Humidity (non condensing)
Reliability, calculated MTBF (MIL-HDBK-217F at +25°C, ground benign)
Isolation voltage (60 sec.)
Isolation capacitance
Isolation resistance
Switching frequency
Remote On/Off control
– Input/Output
– Input/Output
– Input/Output (500 VDC)
Physical Specifications
PhysicalSpecifications
Parameter
Casing material
Potting material
Weight
Soldering temperature
Environmental compliance
–
Reach
–
RoHS directive 2002/95/EC
results
non-conductive plastic
epoxy (UL 94V-0 rated)
6.5 g (0.23 oz)
max. 260°C / 10 sec.
http://www.microdc.cn/uploadfiles/WRA(B)-ZS-2W.pdf
All specifcations valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
+25°
Outline Dimensions
Pin
1
2
3
5
6
7
8
Single
-Vin(GND)
+Vin(Vcc)
Remote On/Off
No function
+Vout
-Vout
No function
Dual
-Vin(GND)
+Vin(Vcc)
Remote On/Off
No function
+Vout
Common
-Vout
Note:specifications can be changed any time without notice.
Dimensions in [mm], () = Inch
Pin diameter ø 0.5
±0.05
(0.02
±0.002)
Tolerances
±0.5
(±0.02)
Pin pitch tolerances
±0.2
(±0.008)
Note:
1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
3. All specifications measured at Ta=25
°
C, humidity<75%, nominal input voltage and rated output load unless
otherwise specified.
4. In this datasheet, all the test methods of indications are based on corporate standards.
5. Only typical models listed, other models may be different, please contact our technical person for more details.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
E-mail:tech@microdc.cn
Website:http://www.microdc.cn
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 2
电源技术
