Common-mode noise reduction by current cancellation in balanced buck-boost switching converter

Masahito Shoyama, Masashi Ohba, Tamotsu Ninomiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Because conventional switching converters are usually using unbalanced circuit topologies, parasitic capacitance between the drain of an MOS-FET and the frame ground through its heat sink may generate the common-mode conducted noise. We proposed a concept of balanced switching converter circuit, which is an effective way to reduce the common-mode conducted noise of a switching converter by current cancellation. In this paper, the path of the noise current in a balanced buck-boost converter circuit is investigated using a current probe. By measuring current waveforms and frequency spectra of the parasitic capacitances and the frame ground line, the mechanism of the common-mode noise reduction by current cancellation is clarified.

Original languageEnglish
Title of host publicationConference Proceedings - IPEMC 2004: 4th International Power Electronics and Motion Control Conference
EditorsZ. Wang
Pages1505-1510
Number of pages6
Volume3
Publication statusPublished - 2004
EventConference Proceedings - IPEMC 2004: 4th International Power Electronics and Motion Control Conference - Xi'an, China
Duration: Aug 14 2004Aug 16 2004

Other

OtherConference Proceedings - IPEMC 2004: 4th International Power Electronics and Motion Control Conference
CountryChina
CityXi'an
Period8/14/048/16/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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