WRA-YMD-3W＆WRB-YMD -3W Series
APPLICATION NOTE
Recommended Circuit
All the WRA_YMD-3W&WRB_YMD-3W Series have been tested according to the following recommended testing
circuit before leaving factory.This series should be tested under load(see Figure 1).
If you want to further decrease the input/output ripple,you can increase capacitance properly or choose
capacitors with low ESR.However,the capacitance of the output filter capacitor must be proper.If the
capacitance is too big,a startup problem might arise.For every channel of output,provided the safe and
reliable operation is ensured,the greatest capacitance of its filter capacitor sees (Table 1).General:
Cin:
5V&12V
100μF
24V&48V
10μF-47μF
Cout: 10μF/100mA
Input current
While using unstable power source,please ensure the output voltage and ripple voltage do not exceed
indexes of the converter.The preceding power source must be able to provide for converter sufficient
starting current Ip(Figure 2).General:Ip≤1.4*Iin-max
No parallel connection or plug and play
OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
Note:
Unit:mm[inch]
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
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