CME Series
Isolated 0.75W Single Output Isolated DC/DC Converters
KDC_CME.B01 Page 7 of 11
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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
CME0505DC 47 82473C 11R473C 4.7
CME0505SC 47 82473C 11R473C 4.7
CME0512SC 68 82683C 11R683C 1
CME0303S3C 10 82103C 11R103C 4.7
CME0305S3C 47 82473C 11R473C 4.7
CME0505S3C 10 82103C 11R103C 4.7
CME0512S3C 68 82683C 11R683C 0.68
CME0505XPC 22 82223C 11R223C 1
