An ultra‐fast protection scheme for normally‐on wide bandgap devices
Abstract Here, an ultra‐fast protection scheme that is dedicated to depletion‐mode (d‐mode) devices is proposed. The key to the d‐mode device gate drive design is the negative supply and overcurrent protection, due to the safety concern for d‐mode devices when a failure happens in power conversion a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-11-01
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| Series: | IET Power Electronics |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/pel2.12179 |
| _version_ | 1797991533076545536 |
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| author | Qiuyang Tan Gopika Narayanankutty E. M. Sankara Narayanan |
| author_facet | Qiuyang Tan Gopika Narayanankutty E. M. Sankara Narayanan |
| author_sort | Qiuyang Tan |
| collection | DOAJ |
| description | Abstract Here, an ultra‐fast protection scheme that is dedicated to depletion‐mode (d‐mode) devices is proposed. The key to the d‐mode device gate drive design is the negative supply and overcurrent protection, due to the safety concern for d‐mode devices when a failure happens in power conversion applications. This work evaluates specific requirement of d‐mode devices, such as the isolated negative power supply and short‐circuit protection. Normally‐on d‐mode GaN devices have lower on‐resistance and minimal dead time in comparison with enhancement‐mode (e‐mode) GaN devices, which can further reduce the switching loss and conduction loss. Both simulation and experimental verification are conducted in this work to evaluate the performance of the proposed protection scheme. The proposed desaturation scheme can wipe out the overcurrent event within 341 ns. Furthermore, the proposed negative power supply scheme can sustain its output for 60.5 ms, providing sufficient action time for the control unit to isolate the converter. |
| first_indexed | 2024-04-11T08:53:37Z |
| format | Article |
| id | doaj.art-165d1320870245bf82a28da309861177 |
| institution | Directory Open Access Journal |
| issn | 1755-4535 1755-4543 |
| language | English |
| last_indexed | 2024-04-11T08:53:37Z |
| publishDate | 2021-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Power Electronics |
| spelling | doaj.art-165d1320870245bf82a28da3098611772022-12-22T04:33:21ZengWileyIET Power Electronics1755-45351755-45432021-11-0114142305231310.1049/pel2.12179An ultra‐fast protection scheme for normally‐on wide bandgap devicesQiuyang Tan0Gopika Narayanankutty1E. M. Sankara Narayanan2Department of Electronics and Electrical Engineering University of Sheffield Sheffield UKDepartment of Electronics and Electrical Engineering University of Sheffield Sheffield UKDepartment of Electronics and Electrical Engineering University of Sheffield Sheffield UKAbstract Here, an ultra‐fast protection scheme that is dedicated to depletion‐mode (d‐mode) devices is proposed. The key to the d‐mode device gate drive design is the negative supply and overcurrent protection, due to the safety concern for d‐mode devices when a failure happens in power conversion applications. This work evaluates specific requirement of d‐mode devices, such as the isolated negative power supply and short‐circuit protection. Normally‐on d‐mode GaN devices have lower on‐resistance and minimal dead time in comparison with enhancement‐mode (e‐mode) GaN devices, which can further reduce the switching loss and conduction loss. Both simulation and experimental verification are conducted in this work to evaluate the performance of the proposed protection scheme. The proposed desaturation scheme can wipe out the overcurrent event within 341 ns. Furthermore, the proposed negative power supply scheme can sustain its output for 60.5 ms, providing sufficient action time for the control unit to isolate the converter.https://doi.org/10.1049/pel2.12179Power electronics, supply and supervisory circuits |
| spellingShingle | Qiuyang Tan Gopika Narayanankutty E. M. Sankara Narayanan An ultra‐fast protection scheme for normally‐on wide bandgap devices IET Power Electronics Power electronics, supply and supervisory circuits |
| title | An ultra‐fast protection scheme for normally‐on wide bandgap devices |
| title_full | An ultra‐fast protection scheme for normally‐on wide bandgap devices |
| title_fullStr | An ultra‐fast protection scheme for normally‐on wide bandgap devices |
| title_full_unstemmed | An ultra‐fast protection scheme for normally‐on wide bandgap devices |
| title_short | An ultra‐fast protection scheme for normally‐on wide bandgap devices |
| title_sort | ultra fast protection scheme for normally on wide bandgap devices |
| topic | Power electronics, supply and supervisory circuits |
| url | https://doi.org/10.1049/pel2.12179 |
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