B0303S-W2R2 Просмотр технического описания (PDF) - MORNSUN Science& Technology Ltd.

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производитель

B0303S-W2R2

0.25W, Fixed input voltage, isolated & unregulated single output

MORNSUN Science& Technology Ltd. 

DC/DC Converter

B_S-W2R2 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

+Vo

Cin

GND

DC DC

Fig.3

Cout

0V

2. EMC typical recommended circuit (CLASS B)

Recommended capacitive load value table (Table 1)

Vin(VDC)

Cin(µF)

Vo (VDC) Cout(µF)

3.3/5

4.7

3.3/5

10

12/15

2.2

9

4.7

24

1

12

2.2

Vin

GND

LDM

C1

Vin

+Vo

DC/DC 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

2017.08.15-A/2

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