Luo, P., Madathil, S. orcid.org/0000-0001-6832-1300, Nishizawa, S.-I. et al. (1 more author) (2021) Turn-off dV/dt controllability in 1.2kV MOS-bipolar devices. IEEE Transactions on Power Electronics, 36 (3). pp. 3304-3311. ISSN 0885-8993
Abstract
Turn-off dV/dt controllability is an essential feature in IGBTs for flexible design in power switching applications. However, the occurrence of Dynamic Avalanche (DA) during the turn-off transients plays a key role on the turn-off power loss, dV/dt controllability and safe operating area of IGBTs. This paper aims to clarify the impact of DA on the turn-off characteristics of 1.2 kV trench IGBTs through calibrated 3-D TCAD simulations as well as experimental demonstrations. Measurement results show that DA is enhanced at high current density and high supply voltage conditions, which aggravates its influence on the dV/dt controllability as well as turn-off power loss. In order to eliminate the DA for high current density and low loss operations, a DA free design is experimentally demonstrated in the Trench Clustered IGBT (TCIGBT). Due to effective management of electric field and unique PMOS actions during turn-off, TCIGBT can retain high dV/dt controllability and low power loss at high current density operations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 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. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Clustered IGBT; dV/dt controllability; dynamic avalanche; high current density operation; IGBT |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Aug 2020 09:08 |
Last Modified: | 05 Aug 2021 00:38 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TPEL.2020.3014560 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164074 |