Skip to main navigation Skip to search Skip to main content

An Active Gate Charge Controlled Driver for SiC MOSFET with Zero Turn-off Loss

  • Yuze Zheng
  • , Xu Cheng
  • , Fan Zhang
  • , Xiaolu Zhang
  • , Yukun Niu
  • , Xuhui Song
  • Xi'an Jiaotong University
  • China Southern Power Grid

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents an analysis of the turn-off transient in SiC MOSFETs, deriving the theoretical conditions for achieving zero turn-off loss and calculating the corresponding critical gate resistance value. Based on this analysis, an active gate driver for SiC MOSFETs utilizing gate charge control is proposed. By employing a lower turn-off voltage to enable rapid device turn-off while precisely regulating the extracted gate charge, this method achieves ultra-low turnoff losses without risking gate overvoltage breakdown. A double-pulse test circuit was implemented in LTspice to conduct comparative simulations between the proposed active gate driver and conventional gate driver. Under test conditions of 1 kV/60 A, the proposed active gate driver demonstrated over 90% reduction in turn-off losses compared to conventional gate diver, while maintaining stable ultra-low loss performance across varying load currents.

Original languageEnglish
Title of host publication2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331511098
DOIs
StatePublished - 2025
Event2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025 - Beijing, China
Duration: 15 Aug 202517 Aug 2025

Publication series

Name2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025

Conference

Conference2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025
Country/TerritoryChina
CityBeijing
Period15/08/2517/08/25

Keywords

  • SiC MOSFET
  • active gate driver
  • gate charge
  • zero turn-off loss

Fingerprint

Dive into the research topics of 'An Active Gate Charge Controlled Driver for SiC MOSFET with Zero Turn-off Loss'. Together they form a unique fingerprint.

Cite this