Complementary MOS structures for common mode EMI reduction

The paper deals with the management and the reduction of conducted common mode EMI noise in power converters. Especially, it is presented how complementary P-N MOSFET structures, used in a specific manner, are able of great and natural common mode current reductions. The advantages obtained by the use of complementary MOSFET topologies are balanced with the additional conduction losses that P MOSFETs are responsible of. The paper presents these issues based on simulation and practical results.

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