Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise

Masahito Shoyama; Masashi Ohba; Tamotsu Ninomiya

Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise

Masahito Shoyama

Masashi Ohba

Tamotsu Ninomiya

Vol. 2, No. 2, pp. 139-145, Apr. 2002

10.6113/JPE.2001.02.2.139

Common-mode conducted noise

Balanced circuit

Buck-boost switching converter

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Abstract

Because conventional switching converters have been usually using unbalanced circuit topologies, parasitic capacitance between the drain/collector of an active switch and the frame ground through its heat sink may generate the common-mode conducted noise. We have proposed a balanced switching converter circuit, which is an effective way to reduce the common-mode conducted noise. As an example, a boost converter version of the balanced switching converter was presented and the mechanism of the common-mode noise reduction was explained using equivalent circuits. This paper extends the concept of the balanced switching converter circuit and presents a buck-boost converter version of the balanced switching converter. The feature of common-mode noise reduction is confirmed by experimental results and the mechanism of the common-mode noise reduction is explained using equivalent circuits.

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Cite this article

[IEEE Style]

M. Shoyama, M. Ohba, T. Ninomiya, "Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise," Journal of Power Electronics, vol. 2, no. 2, pp. 139-145, 2002. DOI: 10.6113/JPE.2001.02.2.139.

[ACM Style]

Masahito Shoyama, Masashi Ohba, and Tamotsu Ninomiya. 2002. Balanced Buck-Boost Switching Converter to Reduce Common-Mode Conducted Noise. Journal of Power Electronics, 2, 2, (2002), 139-145. DOI: 10.6113/JPE.2001.02.2.139.