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Conference object . 2017
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https://doi.org/10.1109/ecce.2...
Article . 2017 . Peer-reviewed
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Multi-level active gate driver for SiC MOSFETs

Authors: Dymond, Harry; Liu, Dawei; Wang, Jianjing; Dalton, Jeremy; Stark, Bernard H;

Multi-level active gate driver for SiC MOSFETs

Abstract

Active gate driving has been shown to provide reduced circuit losses and improved switching waveform quality in power electronic circuits. An integrated active gate driver with 150 ps resolution has previously been shown to offer the expected benefits in GaN-based converters. However, the use of low-voltage, high-speed transistors limits its output voltage range to 5 V, too low for many emerging SiC and GaN devices. This paper introduces a series connection of two commercially available conventional drivers and an improved 5 V, 100 ps resolution active driver. The first conventional driver lifts the gate voltage from the negative hold-off voltage to just below the gate threshold voltage, the active driver performs active high-resolution control around the gate threshold, after which the second conventional driver raises the gate voltage to reach optimal R dson values. This driver is demonstrated on a 900-V SiC MOSFET that requires a 15 V onstate gate voltage to achieve optimum R dson . The device is switched at 50 V/ns in a 100-kHz, non-synchronous, 1:10, 300-W boost converter, with the power device switching 600 V and 5 A. It is shown that the gate voltage can be affected on a 100 ps scale, and that meaningful changes to fast power waveforms can be achieved.

Country
United Kingdom
Related Organizations
Keywords

SiC, arbitrary gate impedance, gate signal profiling, 621, oscillation, 530, active gate driver, electromagnetic interference (EMI), series-connected driver, multi-level driver

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
46
Top 10%
Top 10%
Top 10%
Green