The Efficient Deployment of Silicon Super-Junction MOSFETs as Synchronous Rectifiers

Philip H Anthony, J N McNeill

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Charge-compensated or “Super-junction” MOSFETs exhibit low on-state resistances and low switching losses. However, the reverse recovery behaviour of their intrinsic diodes and their output capacitance characteristics make their deployment as synchronous rectifiers challenging. A simple auxiliary circuit is proposed to address these issues, by reversing the direction of current flow in the MOSFET channel at turn-off, thereby deactivating the intrinsic antiparallel diode and partially charging the MOSFET output capacitance. The proposed technique is verified on a 400 V, 1 kW buck converter.
Original languageEnglish
Title of host publication7th IET Power Electronics, Machines and Drives Conference (PEMD 2014)
Publication statusPublished - 2014

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    Anthony, P. H., & McNeill, J. N. (2014). The Efficient Deployment of Silicon Super-Junction MOSFETs as Synchronous Rectifiers. In 7th IET Power Electronics, Machines and Drives Conference (PEMD 2014)