MEV1 Series

3kVDC Isolated 1W Single & Dual Output DC/DC Converters

KDC_MEV1.F02 Page 6 of 10

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APPLICATION NOTES (continued)

Output Ripple Reduction

By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.

Component selection

Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.

The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter.

Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor

should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be

>20MHz.

DC

DC

L

C

Load

Power

Source

Inductor

Capacitor

L, μH

SMD

Through Hole

C, μF

MEV1x0505xC

10

82103C

11R103C

4.7

MEV1x0509xC

22

82223C

11R223C

2.2

MEV1x0512xC

47

82473C

11R473C

1

MEV1x0515xC

47

82473C

11R473C

1

MEV1x1205xC

10

82103C

11R103C

4.7

MEV1x1209xC

22

82223C

11R223C

2.2

MEV1x1212xC

47

82473C

11R473C

1

MEV1x1215xC

47

82473C

11R473C

1

MEV1x1505xC

10

82103C

11R103C

4.7

MEV1x1509xC

22

82223C

11R223C

2.2

MEV1x1512xC

47

82473C

11R473C

1

MEV1x1515xC

47

82473C

11R473C

1

MEV1x2405xC

10

82103C

11R103C

4.7

MEV1x2409xC

22

82223C

11R223C

2.2

MEV1x2412xC

47

82473C

11R473C

1

MEV1x2415xC

47

82473C

11R473C

1

MEV1x4805SC

10

82103C

11R103C

4.7

MEV1x4809SC

22

82223C

11R223C

2.2

MEV1x4812SC

47

82473C

11R473C

1

MEV1x4815SC

47

82473C

11R473C

1