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A Gate Driver Based on Variable Voltage and Resistance for Suppressing Overcurrent and Overvoltage of SiC MOSFETs

Author

Listed:
  • Jiangui Chen

    (School of Electrical Engineering, Beijing Jiaotong University, Haidian, Beijing 100044, China)

  • Yan Li

    (School of Electrical Engineering, Beijing Jiaotong University, Haidian, Beijing 100044, China)

  • Mei Liang

    (Cooperate research Center, ABB China Ltd., Haidian, Beijing 100055, China)

Abstract

A SiC MOSFET is a suitable replacement for a Si MOSFET due to its lower on-state resistance, faster switching speed, and higher breakdown voltage. However, due to the parasitic parameters and the low damping in the circuit, the turn-on overcurrent and turn-off overvoltage of a SiC MOSFET become more severe as the switching speed increases. These effects limit higher frequency applications of SiC MOSFET. Based on the causes of overcurrent and overvoltage of SiC MOSFET, a novel gate driver with the variable driving voltage and variable gate resistance is proposed in this paper to suppress the overcurrent and overvoltage of SiC MOSFETs. The proposed gate driver can realize the variation in driving voltage and gate resistance during switching transitions. It not only suppresses the overcurrent and overvoltage of SiC MOSFETs, but also has little effect on switching loss. The working principle of the proposed gate driver is analyzed in this paper. Finally, experimental verification on a double-pulse test platform is performed to verify the effectiveness of the proposed gate driver.

Suggested Citation

  • Jiangui Chen & Yan Li & Mei Liang, 2019. "A Gate Driver Based on Variable Voltage and Resistance for Suppressing Overcurrent and Overvoltage of SiC MOSFETs," Energies, MDPI, vol. 12(9), pages 1-14, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1640-:d:227075
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    Citations

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    Cited by:

    1. Hongyan Zhao & Jiangui Chen & Yan Li & Fei Lin, 2021. "A Novel Gate Drive Circuit for Suppressing Turn-on Oscillation of Non-Kelvin Packaged SiC MOSFET," Energies, MDPI, vol. 14(9), pages 1-11, April.
    2. Shan Yin & Yingzhe Wu & Yitao Liu & Xuewei Pan, 2019. "Comparative Design of Gate Drivers with Short-Circuit Protection Scheme for SiC MOSFET and Si IGBT," Energies, MDPI, vol. 12(23), pages 1-15, November.
    3. Loreine Makki & Marc Anthony Mannah & Christophe Batard & Nicolas Ginot & Julien Weckbrodt, 2021. "Investigating the Shielding Effect of Pulse Transformer Operation in Isolated Gate Drivers for SiC MOSFETs," Energies, MDPI, vol. 14(13), pages 1-16, June.

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