NDLI: A relation between dynamic saturation characteristics and tail current of nonpunchthrough IGBT

Content Provider	IEEE Xplore Digital Library
Author	Yamashita, J. Yamada, T. Uchida, S. Yamaguchi, H. Ishizawa, S.
Copyright Year	1996
Description	Author affiliation: Power Device Div., Mitsubishi Electr. Corp., Fukuoka, Japan (Yamashita, J.)
Abstract	This paper describes a relation between dynamic saturation characteristics and turn-off loss of nonpunchthrough (NPT) IGBT for the first time. By experiment and numerical simulation, it was found that the turn-off loss, ESW(off), of NPT-IGBT strongly depends on the on-state pulse width, tw(on), ESW(off) increases with increasing tw(on), and this characteristics strongly depends on the thickness of the n-drift layer and the forward voltage drop. This is because the NPT-IGBT's dynamic carrier saturation speed determined by the hole velocity is much slower than that of PT-IGBT. Further, it is reported for the first time that the true ESW(off) of NPT-IGBT is two or three times larger than the turn-off loss value calculated using the ordinary definition (i.e. 90% of V/sub CE/ to 10% of I/sub C/). This is due to the power loss contribution generated by the tail current under 10% of I/sub C/ which continues for more than several tens of microseconds. From these facts, the temperature rise in the NPT-IGBT during switching is higher than the value to be expected from the turn-off time specified in the data sheets. These results should be noticed in the thermal design of power applications using NPT-IGBT.
Starting Page	1425
Ending Page	1432
File Size	730534
Page Count	8
File Format	PDF
ISBN	0780335449
ISSN	01972618
DOI	10.1109/IAS.1996.559252
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-10-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Insulated gate bipolar transistors Buffer layers Space vector pulse width modulation Temperature Tail Voltage Numerical simulation Anodes Power generation Power engineering and energy
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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