Datasheet

MTU1 Series

Isolated 1W Single & Dual Output SM DC/DC Converters

KDC_MTU.C02 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

MTU1S0305MC 10 82103C 11R103C 10

MTU1S0505MC 10 82103C 11R103C 4.7

MTU1S0509MC 22 82223C 11R223C 2.2

MTU1S0512MC 47 82473C 11R473C 1

MTU1S0515MC 47 82473C 11R473C 1

MTU1S1205MC 10 82103C 11R103C 4.7

MTU1S1209MC 22 82223C 11R223C 2.2

MTU1S1212MC 47 82473C 11R473C 1

MTU1S1215MC 47 82473C 11R473C 1

MTU1D0305MC 10 82103C 11R103C 10

MTU1D0505MC 10 82103C 11R103C 4.7

MTU1D0509MC 22 82223C 11R223C 2.2

MTU1D0512MC 47 82473C 11R473C 1

MTU1D0515MC 47 82473C 11R473C 1

MTU1D1205MC 10 82103C 11R103C 4.7

MTU1D1209MC 22 82223C 11R223C 2.2

MTU1D1212MC 47 82473C 11R473C 1

MTU1D1215MC 47 82473C 11R473C 1

Load

Power

Source