摘要
针对桥式拓扑功率MOSFET因栅极驱动信号振荡产生的桥臂直通问题,给出了计及各寄生参数的驱动电路等效模型,对栅极驱动信号振荡的机理进行了深入研究,分析了驱动电路各参数与振荡的关系,并以此为依据对驱动电路进行参数优化设计,给出了实验波形。理论分析和实验结果表明,改进后的驱动电路成功地解决了驱动信号的振荡问题,从而保证了功率MOSFET能够安全、可靠地运行。
In order to solve the short circuit problem of bridge arms generated by the oscillation of the MOSFET gate, a circuit model considering stray parameters of the drive circuit is put forward. Oscillation principle is analyzed deeply, and the optimal driving circuit is devised simultaneously, the experimental waves are given. Both the theoretic analysis and experimental results indicate that the improved circuit can solve the oscillation problem preferably, and meet the MOSFET driving requirement perfectly.
出处
《电气传动》
北大核心
2005年第6期32-34,共3页
Electric Drive
