Datasheet

NTH Series
Isolated 2W Dual Output SM DC/DC Converters
KDC_NTH.C03 Page 4 of 6
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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
NTH0505MC 10 82103C 11R103C 4.7
NTH0509MC 22 82223C 11R223C 2.2
NTH0512MC 47 82473C 11R473C 1
NTH0515MC 220 82474C 11R474C 0.22
NTH1205MC 10 82103C 11R103C 4.7
NTH1209MC 22 82223C 11R223C 2.2
NTH1212MC 47 82473C 11R473C 1
NTH1215MC 220 82474C 11R474C 0.22