Title :
Balanced switching converter to reduce common-mode conducted noise
Author :
Shoyama, Masahito ; Okunaga, Tsuyoshi ; Li, Ge ; Ninomiya, Tamotsu
Author_Institution :
Graduate Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan
fDate :
6/23/1905 12:00:00 AM
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. 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 converter
Keywords :
DC-DC power convertors; electromagnetic compatibility; electromagnetic interference; interference suppression; switching circuits; EMC; active switch drain/collector; balanced switching converter circuit; boost converter; common-mode conducted noise reduction; common-mode noise reduction; equivalent circuit; heat sink; 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;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954061