Smart Self-driving Gate Driver for Fast Switching and Crosstalk Suppression of SiC MOSFETs

Chunhui Liu, Zhengda Zhang, Yifu Liu, Yunpeng Si, Qin Lei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Wide band gap device, like SiC and GaN, have high switching speed potential. However, the actual speed in practical application is limited by the gate loop parasitic and the interaction between high side switch and low side switch in a single phase-leg configuration, known as crosstalk. This paper proposes an isolated voltage source gate driver with crosstalk suppression capability to take full advantage of the inherent high switching speed ability of WBG device. By applying variable gate voltage through the auxiliary circuit, the crosstalk problem can be mitigated. Using the original Vgs voltage as auxiliary circuit driving signal, the gate driver dose not introduce any control signal which avoids the additional signal/power isolation and makes the auxiliary circuit very easy to be implemented on the existing commercial gate driver. LTSPICE simulation and experiment results based on 1.2kV Wolfspeed SiC MOSFET are shown in this paper to verify the proposed gate driver.

Original languageEnglish (US)
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6655-6660
Number of pages6
ISBN (Electronic)9781728103952
DOIs
StatePublished - Sep 2019
Externally publishedYes
Event11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
Duration: Sep 29 2019Oct 3 2019

Publication series

Name2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
CountryUnited States
CityBaltimore
Period9/29/1910/3/19

Keywords

  • Crosstalk suppression
  • Mega-Hertz frequency
  • SiC MOSFET
  • Smart Gate Driver

ASJC Scopus subject areas

  • Mechanical Engineering
  • Control and Optimization
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Liu, C., Zhang, Z., Liu, Y., Si, Y., & Lei, Q. (2019). Smart Self-driving Gate Driver for Fast Switching and Crosstalk Suppression of SiC MOSFETs. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 6655-6660). [8912572] (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912572