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Electro-thermal instability in multi-cellular Trench-IGBTs in avalanche condition: Experiments and simulations | IEEE Conference Publication | IEEE Xplore

Electro-thermal instability in multi-cellular Trench-IGBTs in avalanche condition: Experiments and simulations


Abstract:

This paper reports on the results of a study on electro-thermal instability induced in multi-cellular Trench-IGBTs in avalanche condition. Experimental measurements, made...Show More

Abstract:

This paper reports on the results of a study on electro-thermal instability induced in multi-cellular Trench-IGBTs in avalanche condition. Experimental measurements, made on T-IGBTs, show possible inhomogeneous current distribution under Unclamped Inductive Switching (UIS) confirmed by transient infrared thermography measurements. Together with this, an analytical modeling of avalanche behavior has been included in a compact electro-thermal simulator to study the interaction between a large numbers of elementary cells of T-IGBTs forced in avalanche condition. Electro-thermal simulations qualitatively replicate the possible inhomogeneous operation observed experimentally. Finally a possible theoretical interpretation of the instability in avalanche condition for T-IGBT is given.
Date of Conference: 23-26 May 2011
Date Added to IEEE Xplore: 01 September 2011
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Conference Location: San Diego, CA, USA

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