Minimising snubbers for high-current emitter-switched transistors

Francis Robinson, B W Williams

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Abstract

High-power emitter-switched transistors have been operated at 20 kHz and 80 A off 600 V, using voltage clamps instead of shunt snubbers. Under these conditions, snubbing is the dominant source of switching-related power loss and transistors deadtime. An analysis of series snubbers reveals configurations conducive to minimal reset-time and power-loss. Cascode switches operating at high-current ideally require adaptive voltage-clamps which clip at current-dependent voltage levels; practical realizations of such clamps are given.
Original languageEnglish
Title of host publication19th Annual IEEE Power Electronics Specialists Conference. PESC '88 Record
Place of PublicationKyoto, Japan
PublisherIEEE
Pages797-804
Number of pages8
Volume2
DOIs
Publication statusPublished - 11 Apr 1988
Event19th Annual IEEE Power Electronics Specialists Conference PESC 1988 - Kyoto, Japan
Duration: 11 Apr 198814 Sep 1988

Conference

Conference19th Annual IEEE Power Electronics Specialists Conference PESC 1988
CountryJapan
CityKyoto
Period11/04/8814/09/88

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Robinson, F., & Williams, B. W. (1988). Minimising snubbers for high-current emitter-switched transistors. In 19th Annual IEEE Power Electronics Specialists Conference. PESC '88 Record (Vol. 2, pp. 797-804). Kyoto, Japan: IEEE. https://doi.org/10.1109/PESC.1988.18210