Silvaco-based evaluation of 10 kV 4H-SiC MOSFET as a solidstate switch in narrow-pulse application

B. Pushpakaran, S. Bayne, A. Ogunniyi

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

Abstract

Key requirements for a solid state switch in a fast switching pulsed power circuit include high blocking voltage, high current conduction and fast switching capability. Typical pulsed power applications like plasma initiation and high-energy LASER require operating voltages in the order of several kilovolts. The development of a multi-kilovolt SiC MOSFET for fast switching pulsed power application would require detailed analysis of the device switching characteristics. Since the switching speed of a MOSFET is primarily dependent on the inter-electrode capacitances, it becomes critical to have a comprehensive understanding of the device capacitance and its effect on the gate driver requirements for narrow-pulse switching. In this research, 2D model of a 10 kV 4H-SiC MOSFET was developed using Silvaco ATLAS TCAD software and simulated for its steady state, AC, and transient characteristics. The device cell was designed for an active area of 5 μm2 and 100 A/cm2 drain current density. The capacitance-voltage and gate charge curve for the SiC MOSFET were obtained via AC and transient simulation respectively. This data was used to estimate the gate drive requirements for the device under fast switching conditions.

Original languageEnglish
Title of host publication2017 IEEE 21st International Conference on Pulsed Power, PPC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781509057481
DOIs
StatePublished - Feb 13 2018
Event21st IEEE International Conference on Pulsed Power, PPC 2017 - Brighton, United Kingdom
Duration: Jun 18 2017Jun 22 2017

Publication series

NameIEEE International Pulsed Power Conference
Volume2017-June
ISSN (Print)2158-4915
ISSN (Electronic)2158-4923

Conference

Conference21st IEEE International Conference on Pulsed Power, PPC 2017
CountryUnited Kingdom
CityBrighton
Period06/18/1706/22/17

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