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 TIGBTs 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.
Electro-thermal instability in multi-cellular Trench-IGBTs in avalanche condition: experiments and simulations / Riccio, Michele; Irace, Andrea; Breglio, Giovanni; Spirito, Paolo; Napoli, Ettore; Y., Mizuno. - (2011), pp. 124-127. (Intervento presentato al convegno IEEE 23rd International Symposium on Power Semiconductor Devices and ICs (ISPSD), 2011 tenutosi a San Diego, CA nel 23-26 May 2011) [10.1109/ISPSD.2011.5890806].
Electro-thermal instability in multi-cellular Trench-IGBTs in avalanche condition: experiments and simulations
RICCIO, MICHELE;IRACE, ANDREA;BREGLIO, GIOVANNI;SPIRITO, PAOLO;NAPOLI, ETTORE;
2011
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 TIGBTs 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
