MEA1 Series

1kVDC Isolated 1W Dual Output DC/DC Converters

KDC_MEA1.C06 Page 5 of 8

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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.

Inductor

Capacitor

L, μH

SMD

Through Hole

C, μF

MEA1D0505xC

10

82103C

11R103C

4.7

MEA1D0509xC

22

82223C

11R223C

2.2

MEA1D0512xC

47

82473C

11R473C

1

MEA1D0515xC

47

82473C

11R473C

1

MEA1D1205xC

10

82103C

11R103C

4.7

MEA1D1209xC

22

82223C

11R223C

2.2

MEA1D1212xC

47

82473C

11R473C

1

MEA1D1215xC

47

82473C

11R473C

1

MEA1D1505xC

10

82103C

11R103C

4.7

MEA1D1509xC

22

82223C

11R223C

2.2

MEA1D1512xC

47

82473C

11R473C

1

MEA1D1515xC

47

82473C

11R473C

1

MEA1D2405xC

10

82103C

11R103C

4.7

MEA1D2409xC

22

82223C

11R223C

2.2

MEA1D2412xC

47

82473C

11R473C

1

MEA1D2415xC

47

82473C

11R473C

1

MEA1D4805xC

10

82103C

11R103C

4.7

MEA1D4809xC

22

82223C

11R223C

2.2

MEA1D4812xC

47

82473C

11R473C

1

MEA1D4815xC

47

82473C

11R473C

1

RoHS COMPLIANT INFORMATION

This series is compatible with RoHS soldering systems with a peak wave solder temperature of

260°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped

over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in

this series are backward compatible with Sn/Pb soldering systems.

For further information, please visit www.murata-ps.com/rohs

DC

DC

L

L

C

C

Load

Load

Power

Source

OV