B0303D-1WR2 Ver la hoja de datos (PDF) - MORNSUN Science& Technology Ltd.

Número de pieza

componentes Descripción

Fabricante

B0303D-1WR2

1W, Fixed input voltage, isolated & unregulated single output

MORNSUN Science& Technology Ltd. 

DC/DC Converter

B_S-1WR2 & B_D-1WR2 series

Design Reference

1. Typical application circuit

If it is required to further reduce input and output ripple, a filter capacitor may be connected to the input and output terminals, see Fig.3.

Moreover, choosing a suitable filter capacitor is very important, start-up problems may be caused if the capacitance is too large. Under the

condition of safe and reliable operation, the recommended capacitive load values are shown in Table 1.

Vin

Cin

GND

DC DC

Fig.3

+Vo

Cout

0V

Recommended capacitive load value table (Table 1)

Vin(VDC)

Cin(µF)

Vo (VDC) Cout(µF)

3.3/5

4.7

3.3/5

10

12

2.2

9

4.7

15

2.2

12

2.2

24

1

15

1

--

--

24

0.47

2. EMC solution-recommended circuit

Vin

GND

LDM

C1

Vin

+Vo

DC /D C

C2 LOAD

GND

0V

Input voltage (VDC)

C1

EMI

C2

LDM

3.3/5/12/15/24

4.7µF /50V

Refer to the Cout in Fig.3

6.8µH

Fig. 4

3. Output load requirements

In order to ensure the converter can work reliably with high efficiency, the minimum load should not less than 10% rated load when it is used.

If the needed power is indeed small, please parallel a resistor on the output side ( The sum of the efficient power and resistor consumption

power is not less than 10%).

4. For more information please find DC-DC converter application notes on www.mornsun-power.com

2018.04.13-B/1

Page 4 of 6

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