Minimising snubbers for high-current emitter-switched transistors

Francis Robinson; B W Williams

doi:10.1109/PESC.1988.18210

Minimising snubbers for high-current emitter-switched transistors

Department of Electronic & Electrical Engineering

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

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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 language	English
Title of host publication	19th Annual IEEE Power Electronics Specialists Conference. PESC '88 Record
Place of Publication	Kyoto, Japan
Publisher	IEEE
Pages	797-804
Number of pages	8
Volume	2
DOIs	https://doi.org/10.1109/PESC.1988.18210
Publication status	Published - 11 Apr 1988
Event	19th Annual IEEE Power Electronics Specialists Conference PESC 1988 - Kyoto, Japan Duration: 11 Apr 1988 → 14 Sept 1988

Conference

Conference	19th Annual IEEE Power Electronics Specialists Conference PESC 1988
Country/Territory	Japan
City	Kyoto
Period	11/04/88 → 14/09/88

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10.1109/PESC.1988.18210

MINIMISING SNUBBERS FOR HIGH-CURRENT EMITTER-SWITCHED TRANSISTORS
(c) 1988 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
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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.",

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AB - 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.

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ER -

Minimising snubbers for high-current emitter-switched transistors

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