EMC’04/Sendai COMMON-MODE NOISE REDUCTION TECHNIQUES FOR SWITCHED-MODE POWER CONVERTERS
نویسندگان
چکیده
In various kinds of switched-mode power converters, conducted noise due to switching operation frequently causes interference with other electronic equipment. This paper focuses on the common-mode conducted noise generated in switched-mode power converters and presents three examples of noise reduction techniques. First, the common-mode conducted noise is reduced in a common-source type active-clamped DC-DC converter for IT equipment by canceling the switching noise current. Secondly, the commonmode current is controlled and reduced by damping impedance in motor drive systems. Thirdly, development of a DC-DC converter for scientific spacecraft use is presented, where very small common-mode noise current is required.
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