2005•Jiangsu Electrical ApparatusRequires access

Modeling and Application of Conducted EMI in Switch Mode Power Supply

Wei Chen

Abstract

Based on the stray capacitances of transformer and heat-sink, analysis on the means and the features on generation of EMI by transformer and heat-sink is made, and analytical model of common mode conducted EMI emission in switch mode power supply is built; and based on this some solutions and design methods are proposed to reduce the level of common mode conducted EMI emission source in revers-stimulation type switch mode power supply, the effectiveness of each design method is verified by experiment.

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Available abstract

Key concepts: EMI, Transformer, Electromagnetic interference, Engineering, Common-mode signal, Electrical engineering, Heat sink, Electronic engineering