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What is Reducing MOSFET Switching Losses about?

This document proposes a new technique to reduce losses in power MOSFETs used in hard-switched converters. Typically, MOSFETs have an internal body diode with poor reverse recovery that causes significant switching losses. The technique uses an additional low-voltage MOSFET connected in series to block the internal body diode during the dead-time between MOSFET switches. This allows the inductor current to freewheel through the channels of the MOSFETs instead of the body diode, reducing losses. Experimental

Author

Wesley de Paula

Language

EN