WRA-YMD-15W&WRB-YMD-15W

WRA-YMD-15W&WRB-YMD-15W

WRA-YMD-15W&WRB-YMD-15W

WRA-YMD-15W&WRB-YMD-15W

WRA-YMD-15W&WRB-YMD-15W

WRA-YMD-15W&WRB-YMD-15W

WRA-YMD-15W&WRB-YMD-15W

eries

http://www.microdc.cn

Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 2 of 3

COMMONTSPECIFICA

COMMONTSPECIFICA

COMMONTSPECIFICA

COMMONTSPECIFICA

COMMONTSPECIFICA

COMMONTSPECIFICA

COMMONTSPECIFICA

T

T

T

T

T

T

IONS

IONS

IONS

IONS

IONS

IONS

IONS

Parameter

Test conditions

Min.

Typ.

Max

Units

Storage Humidity

95

%

Operating Temperature

-40

85

°C

Storage Temperature

-55

105

°C

Temp. Rise at Full Load

Case surface

50

°C

Lead Temperature

1.5mmfrom case for 10seconds

300

°C

Isolation voltage

Tested f or 1 minute and 1mA max

1500

VDC

Isolation resistance

Test at 500VDC

1000

MΩ

Isolation capacitance

100KHz / 0.1V

1000

pF

Switching Frequency

Nominal, full load

500

KHz

MTBF

1000

K hours

Cooling

Free Air Convection

Case material

Nickel-coat ed copper

Weight

30

g

APPLICATION

APPLICATION

APPLICATION

APPLICATION

APPLICATION

APPLICATION

APPLICATION

NOTE

NOTE

NOTE

NOTE

NOTE

NOTE

NOTE

Recommended

Recommended

Recommended

Recommended circuit

circuit

circuit

circuit

All the WRA_YMD-15W&WRB_YMD-15W Series have been tested according to the following

recommended testing circuit before leaving factory . This series should be tested under load.

Never be test ed under no load (see Figure 1).

If you want to further decrease the output ripple, you can increase capacitance properly or choose

capacitors with low ESR. However, the capacitance can't exceed the maximum capacitor load in the list.

Recommended

Recommended

Recommended

Recommended capacitance

capacitance

capacitance

capacitance

To ensure these series can operate efficiently and reliably, the recommended capacitance of input and

output sees the below table.

DERATING

DERATING

DERATING

DERATING

DERATING

DERATING

DERATING

&

&

&

&

&

&

EFFICIENCY

EFFICIENCY

EFFICIENCY

EFFICIENCY

EFFICIENCY

EFFICIENCY

CURVE

CURVE

CURVE

CURVE

CURVE

CURVE

CURVE

1.

1.

1.

1. Temperature

Temperature

Temperature

Temperature derating

derating

derating

derating curve

curve

curve

curve

2.

2.

2.

2. Efficiency

Efficiency

Efficiency

Efficiency Vs

Vs

Vs

Vs Input

Input

Input

Input voltage

voltage

voltage

voltage

WRA2412YMD-15W

WRA2412YMD-15W

WRA2412YMD-15W

WRA2412YMD-15W

Efficiency VS Input voltage

3.

3.

3.

3. Efficiency

Efficiency

Efficiency

Efficiency Vs

Vs

Vs

Vs Output

Output

Output

Output Power

Power

Power

Power

WRA2412YMD-15W

WRA2412YMD-15W

WRA2412YMD-15W

WRA2412YMD-15W

Efficiency VS

Output load

OUTPUT

OUTPUT

OUTPUT

OUTPUT

OUTPUT

OUTPUT

OUTPUT

VOLTAGE

VOLTAGE

VOLTAGE

VOLTAGE

VOLTAGE

VOLTAGE

TRIM

TRIM

TRIM

TRIM

TRIM

TRIM

UP/DOWN

UP/DOWN

UP/DOWN

UP/DOWN

UP/DOWN

UP/DOWN

UP/DOWN