一种宽频隔离SiC功率器件驱动电路

A Broadband Isolated Drive Circuit of the SiC Power Device

提出了一种新型双边沿触发隔离驱动电路,该电路能够实现驱动信号的全隔离,抗干扰能力强;开关频率范围宽,能够实现0 Hz~500 kHz信号传递;驱动能力强,可以很好满足SiC功率器件的应用需求。首先,详细介绍了电路结构和工作原理,阐述了边沿调制和解调技术。然后,论述了电路参数设计准则。最后,通过实验验证了电路理论分析和参数设计的正确性。

In order to realize the application requirements of SiC power devices,a novel dual edge-triggered isolated drive circuit was proposed.The circuit have the advantages of full isolation of driving signals,strong driving ability,wide switching frequency range with 0 Hz~500 kHz signal transmission and strong of resisting disturbance.Firstly,the structure and working principle of the circuit,as well as the edge modulation and demodulation technology were introduced in detail.Then,the design criteria of circuit parameters was discussed.Finally,the correctness of the circuit theoretical analysis and parameter design was verified in a circuit experiments.