WRB-YMD-20W Series
WIDE INPUT,ISOLATED & REGULATED Single Output DC/DC Converter
SELECTION GUIDE
Output
Input
Output
Capacitor
Load
Watt
Efficiency
(%)
Current Full
Load
Voltage
Voltage
order
(Output)
(VDC)
(VDC)
(mA)
(uF)
WRB1203YMD-4500
WRB1205YMD-20W
WRB1212YMD-20W
WRB1215YMD-20W
WRB2403YMD-4500
WRB2405YMD-20W
WRB2412YMD-20W
WRB2415YMD-20W
WRB4803YMD-4500
WRB4805YMD-20W
WRB4812YMD-20W
WRB4815YMD-20W
14.85
20
9-18
9-18
3.3
5
4500
4000
1660
1330
4500
4000
1660
1330
4500
4000
1660
1330
85
89
88
88
86
89
89
89
84
88
89
89
2000
2000
470
FEATURES
◆RoHS compliant
20
9-18
12
15
3.3
5
20
9-18
330
14.85
20
18-36
18-36
18-36
18-36
36-72
36-72
36-72
36-72
2000
2000
470
◆Efficiency up to 86%
20
12
15
3.3
5
◆1"X1" DIP Package
20
330
14.85
20
2000
2000
470
◆Wide temperature performance at full
20 Watt load,-40°C to 85°C
◆UL 94V-0 package material
◆No heat sink required
20
12
15
20
330
*Input voltage can't exceed this value,or will cause the permanent damage.
◆ Low ripple and good EMC Features
◆ Industry standard pinout
◆ Regulated Single Output
◆ 1500 VDC I/O Isolation
◆ Short Circuit Protection(automatic recovery)
◆ Metal case package
Input Specifications
Voltage Range
Input Filter
2:1 Wide Input (See Table)
L-C Type
Output Specifications
Voltage Accuracy
Short Circuit Protection
Over Power Protection
Over Voltage Protection
Line Regulation (LL-HL)
Load Regulation (10% - 100%)
Ripple
± 2 %
Current Limit (Automatic Recovery)
Over 120% of Rating (Automatic Recovery)
Zener Diode Clamp
◆ MTBF>1000000 hours
± 0.5 %, typ.
MODEL SELECTION
①
②
③
④
⑤
⑥
± 1 %, typ.
WRB 24 05 Y MD -20W(4000)
75 - 100 mV pk-pk, max.
100 – 125 mV, max.
Noise
①Product Series
③Output Voltage
⑤package style
②Input Voltage
④Wide (2:1) Input Range
Temperature Coefficient
± 0.02% / °C, max.
General Specifications
Efficiency
I/O Isolation Voltage (3 sec.)
I/O Isolation Resistance
Switching Frequency
See Table
1500 VDC
108Ohms
⑥Rated Power(Output current)
DESCRIPTION
300 - 450 kHz, typ.
95% rel H
Humidity
Reliability Calculated MTBF (MIL-HDBK-217F)
> 0.8 MHrs
The WRB_YMD-20W series are specially designed for
Physical Specifications
applications where
a wide range input voltage power
Case Material
Weight
Six-side shielded Alu (non conductive Base)
~ 15 g, typ.
supplies are isolated from the input power supply in a
distributed power supply system on a circuit board. These
products apply to:
Environment Specifications
Operating Temperature
Maximum Case Temperature
Storage Temperature
Cooling
-40 to +50°C (for 100% - See Derating Graph)
105℃
1) Where the voltage of the input power supply is wide
range (voltage range≤2:1);
-55 to +105℃
Free Air Convection (10mm distance required)
Soldering 260°C, max. (1.5mm from case 10s.)
2) Where isolation is necessary between input and
output(isolation voltage≤1500VDC);
RoHS Conform
3) Where the regulation of the output voltage and the
output ripple noise are demanded.
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http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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