NTE Series

Isolated 1W Single Output SM DC/DC Converters

KDC_NTE.K04 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

NTE0303MC

10

82103C

11R103C

4.7

NTE0305MC

47

82473C

11R103C

4.7

NTE0309MC

22

82223C

11R223C

2.2

NTE0312MC

10

82103C

11R103C

1

NTE0315MC

47

82473C

11R473C

1

NTE0503MC

10

82103C

11R103C

4.7

NTE0505MC

47

82473C

11R473C

4.7

NTE0505MEC

47

82473C

11R473C

4.7

NTE0506MC

10

82103C

11R103C

4.7

NTE0509MC

22

82223C

11R223C

2.2

NTE0512MC

47

82473C

11R473C

1

NTE0515MC

47

82473C

11R473C

1

NTE1205MC

47

82473C

11R473C

4.7

NTE1209MC

22

82223C

11R223C

2.2

NTE1212MC

47

82473C

11R473C

1

NTE1215MC

47

82473C

11R473C

1