Reduction of power converter EMI emission using soft-switchingtechnique |
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| Authors: | Chung H Hui SYR Tse KK |
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| Affiliation: | Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon; |
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| Abstract: | Measurements of conducted and radiated electromagnetic interference (EMI) emission from hard-switched and soft-switched buck, boost, and flyback converters of similar power ratings are presented. Results indicate that EMI emission can be substantially reduced by using a soft-switching technique in power converters. Thus, the soft-switching technique provides a practical and useful solution to reduce EMI emission from switched-mode power circuits. A comparison of EMI emission on the three classes of converters is also included. The flyback converter is found to be the least EMC friendly among the converters tested |
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