| Autor: |
Deng, Junyun, Peters, Elmar, Wang, Wenbo, Venugopal, Prasanth, Popović, Jelena, Ferreira, Braham |
| Přispěvatelé: |
Power Electronics |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe) |
| DOI: |
10.23919/epe21ecceeurope50061.2021.9570646 |
| Popis: |
Turn-off ringing is a challenge caused by parasitic elements in power loop, resulting in switching losses, voltage breakdown and EMI issues. A worse case occurs while employing wide bandgap power transistors due to their fast turn-off. The conventional way to mitigate turn-off ringing is to reduce the commutation loop inductance or slow down transistors’ switching speed. However, slow turn-off speed is undesirable due to low switching loss. In this work, it is demonstrated that fast turn-off of wide bandgap(WBG) transistors can facilitate minimizing voltage overshoot with well-tuned parasitic loop inductance. Based on the characterization of the turn-off transition, an analytical model is derived that shows voltage overshoot can be reduced without sacrificing low turn-off loss and simple PCB layout while allowing high loop inductances. The proposed technology can fully exploit the potential of wide bandgap transistors in extremely fast switching conditions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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