WRB-YMD-15W
Series
Isolated 15W Single Output DC/DC Converter
SELECTION GUIDE
order code
Input
Voltage range
Nominal
Input
Voltage
V
Output
Voltag
e
V
Output
Current
A
Current Limit
A(MIN.)
A(MAX.)
Efficiency
%
MTTF
2
kHrs
WRB2403YMD-15W
18-36VDC
18-36VDC
18-36VDC
18-36VDC
36-72VDC
36-72VDC
36-72VDC
36-72VDC
24
24
24
24
48
48
48
48
3.3
5
12
15
3.3
5
12
15
4.4
3
1.25
1
4.4
3
1.25
1
7.5
5
2.5
2
7.5
5
2.5
2
11
7.5
3.7
3
11
7.5
3.7
3
81
84
86
87
83
85
88
89
335
286
286
281
295
301
302
296
FEATURES
◆
RoHS compliant
◆
High efficiency to 89%
◆
Power density up to 2.4W/cm
3
◆
UL 94V-0 package material
◆
Industry standard pinout
◆
Non latching current limit
◆
Constant 350kHz frequency
◆
1.5kV input to output isolation
◆
Versatile control options
◆
Continuous rating to 15W at 40℃ without
WRB2405YMD-15W
WRB2412YMD-15W
WRB2415YMD-15W
WRB4803YMD-15W
WRB4805YMD-15W
WRB4812YMD-15W
WRB4815YMD-15W
INPUT CHARACTERISTICS
Parameter
Voltage range
Conditions
Continuous operation, 24V input types
Continuous operation, 48V input types
Min.
18
36
Typ.
24
48
Max.
36
72
Units
V
OUTPUT CHARACTERISTICS
Parameter
Voltage set point error
Conditions
50% load
Case temperature -40oC to 110oC
Overall voltage error
Load 0% - 100%
Input
Temperature coefficient
of output voltage (slope
Deviation of output
voltage
Line regulation
Load Regulation
Ripple
Temperature MIN-MAX
Operating voltage range, 50% load
0% - 100% rated load
rms
70
0.5
1
0.1
0.5
%
%
mV
250
specified range
2.5
ppmoC
Min.
Typ.
Max.
0.5
%
Units
Heatsink
◆
Operation to zero load
◆
Protected against load faults
◆
Internal over temperature protection
◆
Uses no electrolytic capacitors
MODEL SELECTION
WRB
①
24
②
03
③
Y
④
MD
⑤
-15W
⑥
①Product
Series
③Output
Voltage
⑤Metal
Shield
⑦Rated
Power
②Input
Voltage
④Wide
(2:1) Input Range
⑥DIP
Package Style
DESCRIPTION
The WRB-YMD-15W series of DC/DC converters
combines ease of application with versatility. The pin
pattern is based on the popular industry standard, but two
additional pins may optionally be fitted to provide a variety
of features not commonly found on units of this type. High
efficiency enables full rating to be achieved in a small
package without heats inking, and a high surge capability
will provide for start-up and transient loads, whilst being
thermally protected against sustained overload. Overload
protection of the “constant current” type ensures start-up
into complex load conditions. The copper case achieves
efficient heat transfer and screening. The product range
has been recognized by Underwriters Laboratory (UL) to
UL 1950 for operational insulation, file number E179522
applies.
ISOLATION CHARACTERISTICS
Parameter
Isolation test
Resistance
Conditions
Flash tested for 1 second
VISO = 500VDC
Min.
1500
1
Typ.
Max.
Units
VDC
GΩ
ABSOLUTE MAXIMUM RATINGS
Input voltage, 24V input types
Input voltage, 48V input types
Output voltage
Output trim control
Synchronisation/shutdown control
-0.5V to 40V
-0.5V to 80V
-0.3V to regulated voltage
-1V to +30V
±15V relative to input return
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. Absolute maximum value for 30 seconds. Prolonged operation may damage the product.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
MICRODC reserves the copyright
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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