Balanced switching converter to reduce common-mode conducted noise
Shoyama, M.
Ge Li
Ninomiya, T.
Graduate Sch. of Inf. Sci & Electr. Eng.., Kyushu Univ., Japan;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Dec. 2003
Volume: 50,
Issue: 6
On page(s): 1095- 1099
ISSN: 0278-0046
INSPEC Accession Number: 7964609
Digital Object Identifier: 10.1109/TIE.2003.819677
Current Version Published: 2004-01-08
Abstract
Because conventional switching converters have usually used 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. This paper proposes 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 is presented, and the mechanism of the common-mode noise reduction is explained using an equivalent circuit. This good feature is confirmed by experimental results. The concept of the balanced switching converter is applied to some other types of switching converters.
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