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Analysis of dynamic transients of high voltage silicon and 4H-SiC NPN BJTs
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Shen, Chengjun, Jahdi, Saeed, Mellor, Phil, Yuan, Xibo, Alatise, Olayiwola M. and Ortiz-Gonzalez, Jose Angel (2021) Analysis of dynamic transients of high voltage silicon and 4H-SiC NPN BJTs. In: PCIM Europe digital days 2021, Virtual conference, 03-07 May 2021. Published in: PCIM Europe digital days 2021; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management ISBN 9783800755158.
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WRAP-Analysis-dynamic-transients-high-voltage-silicon-4H-SiC-NPNBJTs-2021.pdf - Accepted Version - Requires a PDF viewer. Download (935Kb) | Preview |
Official URL: https://ieeexplore.ieee.org/document/9472239/metri...
Abstract
4H-SiC vertical NPN BJTs are attractive power devices with potentials to be used as high power switching devices with high voltage ratings in range of 1.7 kV. Compared with silicon power BJTs, they particularly benefit from a large current gain to a factor of ten times higher than silicon counterparts which improves the efficiency of the gate driver. In this paper, the advantages of the 4H-SiC NPN BJTs in terms of switching transients over their silicon counterparts is illustrated by means of extensive experimental measurements and modelling. High level injection, as a common phenomenon among bipolar devices, determines the switching Speed between on-state and off-state. The two device types have been tested at 800 V with maximum temperature of 175°C and maximum collector current of 8 A. The turn-on and turn-off transition in Silicon BJT is seen to be much slower than that of the SiC BJT while the switching time will increase with increasing temperature and decreases with larger collector currents.
Item Type: | Conference Item (Paper) | ||||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||
Library of Congress Subject Headings (LCSH): | Transients (Dynamics), Silicon -- Electric properties, Bipolar transistors, Junction transistors | ||||||
Journal or Publication Title: | PCIM Europe digital days 2021; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management | ||||||
Publisher: | VDE | ||||||
ISBN: | 9783800755158 | ||||||
Official Date: | 2 July 2021 | ||||||
Dates: |
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Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 8 February 2022 | ||||||
Date of first compliant Open Access: | 9 February 2022 | ||||||
Conference Paper Type: | Paper | ||||||
Title of Event: | PCIM Europe digital days 2021 | ||||||
Type of Event: | Conference | ||||||
Location of Event: | Virtual conference | ||||||
Date(s) of Event: | 03-07 May 2021 | ||||||
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