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Improving SiC JFET Switching Behavior Under Influence of Circuit Parasitics
Abstract
This paper investigates the switching behavior of normally OFF silicon carbide (SiC) JFETs in an inverter for a motor drive. The parasitic ringing caused by different parasitic effects is analyzed. Two different methods, the use of an RC snubber and the use of suppression ferrite component, are investigated for dampening the parasitic oscillations. It is found that applying a ferrite bead not only dampens the parasitic oscillations, but also results in significantly lower switching losses. Furthermore, it is shown that the capacitive coupling between SiC devices in the bridge leg and heat sinks significantly deteriorates the JFETs’ switching performance. The effect of two substrates, an insulated metal substrate and a printed circuit board, on the capacitive coupling is investigated. A method in which the use of two separate heat spreaders minimizes the capacitive coupling, thus, exploiting the full potential of fast SiC JFETs is proposed.
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Cited by
A Survey of EMI Research in Power Electronics Systems With Wide-Bandgap Semiconductor Devices
Zhang, B., & Wang, S. (2020) · IEEE Journal of Emerging and Selected Topics in Power Electronics · doi:10.1109/jestpe.2019.2953730 · Cited by 367
Active Gate Driver for Crosstalk Suppression of SiC Devices in a Phase-Leg Configuration
Zhang, Z., Wang, F., Tolbert, L. M., & Blalock, B. J. (2014) · IEEE Transactions on Power Electronics · doi:10.1109/tpel.2013.2268058 · Cited by 278
Wang, Z., Shi, X., Xue, Y., Tolbert, L. M., Wang, F., & Blalock, B. J. (2014) · IEEE Transactions on Industrial Electronics · doi:10.1109/tie.2013.2297304 · Cited by 269
Modeling and Analysis of SiC MOSFET Switching Oscillations
Liu, T., Ning, R., Wong, T., & Shen, Z. J. (2016) · IEEE Journal of Emerging and Selected Topics in Power Electronics · doi:10.1109/jestpe.2016.2587358 · Cited by 265
Ding, X., Du, M., Duan, C., Guo, H., Xiong, R., Xu, J., Cheng, J., & Chi kwong Luk, P. (2018) · IEEE Transactions on Vehicular Technology · doi:10.1109/tvt.2017.2765670 · Cited by 138
Metadata
- Authors
- Josifovic, I., Popovic-Gerber, J., & Ferreira, J. A.
- Venue
- IEEE Transactions on Power Electronics
- Published
- 2012-08
- Volume
- 27
- Issue
- 8
- Pages
- 3843-3854
- ISSN
- 0885-8993 (ISSN-L)
- 1941-0107
- OpenAlex
- W1989151762
- Cited by
- 220
- References
- 0
- FWCI
- 12.41
- Type
- journal article
- Language
- en
- Open access
- closed
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- Josifovic, I., Popovic-Gerber, J., & Ferreira, J. A. (2012). Improving SiC JFET Switching Behavior Under Influence of Circuit Parasitics. IEEE Transactions on Power Electronics. https://doi.org/10.1109/tpel.2012.2185951
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