一种SiC MOSFET有源串扰抑制驱动电路  

An Active Crosstalk Suppression Driving Circuit for SiC MOSFET

作　　者：熊泰来 杨亚兰 徐卫刚 毕悦 林轩 曹太强 阳小明 Xiong Tailai;Yang Yalan;Xu Weigang;Bi Yue;Lin Xuan;Cao Taiqiang;Yang Xiaoming(School of Electrical and Electronic Information,Xihua University,Chendu 610039,China;Sichuan Integrated Energy Service Company of State Grid Corporation of China,Chendu 610072,China;Chengdu SIWI High-Tech Industry Company Limited,Chendu 610097,China)

机构地区：[1]西华大学电气与电子信息学院,成都610039 [2]国网四川综合能源服务有限公司,成都610072 [3]成都四威高科技产业园有限公司,成都610097

出　　处：《半导体技术》2024年第12期1135-1143,共9页Semiconductor Technology

基　　金：成都市重点研发支撑计划“揭榜挂帅”项目(2023-JB00-00002-SN);成都市重点研发支撑计划技术创新研发项目(2024-YF08-00016-GX,2024-YF08-00033-GX,2024-YF08-00041-GX,2024-YF08-00136-GX)。

摘　　要：在SiC MOSFET为主开关管的半桥电路中,寄生参数会导致串扰问题,影响电路的工作安全。为了抑制串扰,提出了一种有源串扰抑制驱动电路。在传统无源驱动电路的基础上,增加了辅助MOSFET和快恢复二极管对正向串扰和负向串扰进行抑制,并增加电容来产生负压,加速SiC MOSFET关断。在LTspice软件中进行仿真分析,并搭建实验测试平台进行验证。实验结果表明,在200 V母线电压下正、负向串扰分别降低为原来的49.1%和61.4%,在400 V母线电压下正、负向串扰分别降低为原来的50.4%和57.7%,在600 V母线电压下正、负向串扰分别降低为原来的66.7%和62.8%。与传统无源驱动电路相比,提出的有源串扰抑制驱动电路能够在不同电压工况下有效抑制串扰尖峰电压。In the half-bridge circuit where SiC MOSFETs serve as the main switching transistors,parasitic parameters may cause crosstalk issues,affecting the operational safety of the circuit.To suppress crosstalk,an active crosstalk suppression driver circuit was proposed.This circuit was built based on the traditional passive driver circuits by adding auxiliary MOSFETs and fast recovery diodes to suppress both forward and reverse crosstalk.Additionally,capacitors were included to generate negative voltage,accelerating the turn-off of the SiC MOSFETs.Simulations were conducted using LTspice software,and an experimental testing platform was established for validation.Experimental results show that at a 200 V bus voltage,forward and reverse crosstalk are reduced to 49.1% and 61.4% of their original values,respectively.At 400 V bus voltage,they are reduced to 50.4% and 57.7% of their original values,and at 600 V bus voltage,they are reduced to 66.7% and 62.8% of their original values.Compared with traditional passive driver circuits,the proposed active crosstalk suppression driver circuit can effectively suppress crosstalk voltage spikes under various voltage conditions.

关 键 词：SiC MOSFET 寄生参数 半桥电路 有源驱动 串扰抑制 负压关断 

分 类 号：TN78[电子电信—电路与系统]