Datasheet

NKE Series
Isolated Sub-Miniature 1W Single Output DC/DC Converters
KDC_NKE.K07 Page 5 of 7
www.murata-ps.com/support
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
NKE0303xC 10 82103C 11R103C 4.7µF
NKE0305xC 47 82473C 11R473C 4.7µF
NKE0309xC 47 82473C 11R473C 1µF
NKE0503xC 10 82103C 11R103C 4.7µF
NKE0505xC 47 82473C 11R473C 4.7µF
NKE0505xEC 47 82473C 11R473C 4.7µF
NKE0509SC 47 82473C 11R473C 1µF
NKE0512xC 68 82683C 11R683C 0.68µF
NKE0515xC 100 82104C 11R104C 2.2µF
NKE1205xC 47 82473C 11R473C 4.7µF
NKE1209xC 47 82473C 11R473C 1µF
NKE1212xC 68 82683C 11R683C 0.47µF
NKE1215xC 100 82104C 11R104C 2.2µF