电工技术学报2019，Vol.34Issue(2)：275-285,11.DOI:10.19595/j.cnki.1000-6753.tces.171576
一种抑制SiC MOSFET桥臂串扰的改进门极驱动设计
An Improved SiC MOSFET Gate Driver Design for Crosstalk Suppression in a Phase-Leg Configuration
摘要
Abstract
Due to the effects of higher switching speed and parasitic parameters, crosstalk in a phase-leg configuration of traditional Silicon Carbide (SiC) MOSFET driver is more serious, while the existing drive circuits for crosstalk suppression usually bring the disadvantages of increasing switching loss, switching delay or complex degree.Combined with the method of gate impedance control and gate voltage control for crosstalk suppression, an improved gate driver was proposed in this paper.Firstly, the cause of crosstalk phenomenon and its typical solution were described.Secondly, based on the idea of adding additional new auxiliary circuit with a triode series-connected capacitor between gate-source terminals to decrease the gate driver impedance when crosstalk occurred, an improved gate driver design method was proposed on the premise of applying a negative-biased turn-off gate voltage.The operating principle and the key parameters design rules were also studied.Finally, a double-pulse testing platform was established to verify the effectiveness of the improved gate driver under the conditions of different drive resistances, input voltages and load currents.The results show that the crosstalk phenomenon of traditional SiC MOSFET driver is obvious;compared with the typical gate driver, the proposed method can reduce the switching loss and delay.关键词
SiC MOSFET/串扰抑制/门极驱动/辅助支路/开关损耗与延时Key words
SiC MOSFET/crosstalk suppression/gate driver/auxiliary circuit/switching loss and delay分类
信息技术与安全科学引用本文复制引用
李辉,黄樟坚,廖兴林,钟懿,王坤..一种抑制SiC MOSFET桥臂串扰的改进门极驱动设计[J].电工技术学报,2019,34(2):275-285,11.基金项目
国家重点研发计划(2018YFB0905700) （2018YFB0905700）
国家自然科学基金(51675354,51761135014) （51675354,51761135014）
重庆市重点产业关键技术创新专项(cstc2015zdcy-ztzx0171,cstc2017zdcy-zdyf0124) （cstc2015zdcy-ztzx0171,cstc2017zdcy-zdyf0124）
重庆市研究生科研创新(CYS18009)资助项目 （CYS18009）
