Title :
Balanced switching converter to reduce common-mode conducted noise
Author :
Shoyama, Masahito ; Li, Ge ; Ninomiya, Tamotsu
Author_Institution :
Graduate Sch. of Inf. Sci & Electr. Eng.., Kyushu Univ., Japan
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.
Keywords :
MOSFET; equivalent circuits; semiconductor device noise; switching convertors; active switch; balanced switching converter; boost converter version; common-mode conducted noise reduction; drain/collector; equivalent circuit; frame ground; parasitic capacitance; unbalanced circuit topologies; Active noise reduction; Circuit noise; Circuit topology; Heat sinks; Noise generators; Noise reduction; Parasitic capacitance; Switches; Switching circuits; Switching converters;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2003.819677