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A Study on Reduction of Conducted-Noise by the Expanded Node of the Forward Converter  

Yi, Hee-Hoon (현대자동차(주) 연구개발총괄본부)
Kwon, Young-Ahn (부산대 공대 전자전기통신공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.55, no.7, 2006 , pp. 374-379 More about this Journal
Abstract
The switch mode power supply is a source of EMI with other equipment as well as with its own proper operation because of rapid changes in voltages and currents within a switching converter. The EMI is transmitted in two forms: radiated and conducted. Conducted noise consists of two categories known as the differential mode and the common mode. Common mode noise current is a major source of EMI in the switch mode Power supply. Recently, a current balancing technique has been studied to reduce the common mode noise. This paper investigates the reduction of common mode noise according to a node expansion of the switch mode power supply which is based on a current balancing technique. In this paper, seven PCB patterns of the forward converter are manufactured and experimented.
Keywords
EMI; Conducted Noise; Common Mode Noise; Current Balancing Technique; Node Expansion; Forward Converter;
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