一种SiC MOSFET 谐振门极驱动电路

A Resonant Gate Driver for SiC MOSFET

该文提出一种适用于SiC MOSFET的谐振门极驱动电路,所提出的驱动电路利用LC谐振网络来回收储存在门极电容中的能量,从而减小驱动损耗。首先详细分析谐振门极驱动电路的工作原理并给出了各个模态下的主要波形。然后介绍谐振门极驱动电路的设计原则,分析谐振门极驱动电路的驱动损耗。最后搭建谐振门极驱动电路的仿真模型与实验平台,从仿真结果与实验结果来看,该文所提出的谐振门极驱动电路具有良好的工作性能,驱动损耗在1MHz开关频率下降低为0.258W,提高了驱动电路的效率。

A resonant gate driver for SiC MOSFET is proposed in this paper.The proposed gate driver uses LC resonant network to recover the energy stored in the gate capacitor of the SiC MOSFET.Then the driving losses can be reduced.The operation principle of the resonant gate driver is analyzed in detail and main waveforms under different modes are given.At the same time,the design principle of the resonant gate driver is introduced and the driving losses of the resonant gate driver are analyzed.Finally,the simulation model and experimental platform of the resonant gate driver are built.The results show that the proposed resonant gate driver has quite good performance.The driving loss is reduced to 0.258W at 1MHz switching frequency,which improves the efficiency of the gate driver.