Auxiliary Resonant Source Charge Extraction Circuitry for Enabling the Use of Super Junction MOSFETs in High Efficiency DC-DC converters

Andrew Hopkins, Nick Simpson, Neville McNeill

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

1 Citation (Scopus)
116 Downloads (Pure)

Abstract

In this paper a high efficiency DC-DC converter power stage employing silicon Super-Junction (SJ) MOSFETs is presented. These devices have low on-state resistances and fast switching capabilities. However, their intrinsic body diode has a very poor reverse recovery behavior and they have an output capacitance that has a highly non-linear inverse relationship with voltage. These characteristics lead to problematic charging currents when they are used in bidirectional voltage source converters. These problems are addressed through implementation of an auxiliary resonant source charge extraction circuit in conjunction with anti-series MOSFETs. The result is a 5-kW power converter with a power semiconductor stage full-load efficiency exceeding 99% and requiring no forced cooling.
Original languageEnglish
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2159-2166
Number of pages8
Volume2019-March
ISBN (Electronic)9781538683309
ISBN (Print)9781538683316
DOIs
Publication statusPublished - 27 May 2019
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: 17 Mar 201921 Mar 2019

Publication series

NameApplied Power Electronics Conference and Exposition (APEC)
PublisherIEEE
ISSN (Print)1048-2334
ISSN (Electronic)2470-6647

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
CountryUnited States
CityAnaheim
Period17/03/1921/03/19

Keywords

  • auxiliary resonant topology, diode reverse recovery, MOSFET, output capacitance, super-junction, switching-aid circuit

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