A cost-efficient Current-Source Gate Driver for SiC MOSFET Module and its Comparison with Voltage-Source Gate Driver

Wang, Xiang, Wu, Haimeng and Pickert, Volker (2020) A cost-efficient Current-Source Gate Driver for SiC MOSFET Module and its Comparison with Voltage-Source Gate Driver. In: IPEMC - ECCE Asia 2020, 29 Nov -2 Dec 2020, Nanjing, China. (In Press)

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Abstract

A current-source gate driver (CSG) is considered as a candidate to improve the switching performance of Silicon Carbide (SiC) MOSFET compared with a SiC MOSFET powered by a voltage-source gate driver (VSG). Various CSG circuits have been proposed to promote the switching transients by generating a constant gate current. However, those circuits are normally designed with complicated structures and high costs due to extra components and control signals. This paper proposes a cost-efficient approach to adjust the gate current of the conventional VSG which can improve its dynamic performance of the devices. Following the comparison analysis of CSG and VSG, a simple-structure circuit is introduced to replace the gate resistor in the conventional VSG. This circuit transforms that the gate current shows constant levels during the switching transients, which exhibits current-source characteristics. Simulation and experimental studies have been undertaken to verify the effectiveness of the proposed circuit. The results show that the turn-on switching time and oscillation can be reduced using the proposed circuit compared with the conventional VSG and the proposed circuit is less hardware intensive compared to other CSGs.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: current-source gate driver, switching performance, SiC MOSFET module, turn-on time
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 03 Mar 2021 13:20
Last Modified: 03 Mar 2021 13:30
URI: http://nrl.northumbria.ac.uk/id/eprint/45602

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