Original scientific paper

Reduction of Ringing Losses in Flyback Converter by Using the RC-RCD Clamp Circuit

M. Milanovič
J. Korelič
A. Hren
F. Mihalič
P. Šlibar

Abstract

Flyback converter is one of the most popular DC-DC converters for low power supply. Due to the transformer leakage inductance the converter suffers from the voltage spikes, which can be »controlled« by the dissipative RCD or non-dissipative LCD clamp circuits. Both of the clamp circuits consist of the diode. The diode reverse recovery charge causes the oscillation, which results in additional dissipation of the clamp circuitry. This paper describes this ringing phenomenon and the use of an RC-RCD clamp circuit for damping the clamp-diode's oscillation. This clamp circuit is capable for improving a flyback converter's power ratio.

Keywords

clamp circuit; flyback converter; ringing losses

Hrčak ID:

4408

URI

https://hrcak.srce.hr/4408

Publication date:

3.5.2006.

Article data in other languages: croatian

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