传统电压源型驱动电路与谐振驱动电路对比

Contrastive Analysis Between Traditional Voltage Source Drive Circuit and Resonant Drive Circuit

基于传统电压源型驱动(Voltage Source Driver,VSD)电路驱动过程中产生的损耗大、dv/dt问题引起的开关误导通等问题,对传统VSD电路和电流源型驱动(Current Source Drivers,CSD)电路的驱动过程进行了分析对比。首先对MOSFET的相关知识进行了介绍,接着对以MOSFET为原型的传统VSD电路工作过程进行了分析,在此基础上,分析了电感电流连续的CSD电路工作过程,并与传统VSD驱动电路进行了优缺点对比。最后用Pspice仿真软件进行了仿真验证。仿真结果显示,CSD电路较VSD电路而言,可以大大的减小驱动损耗。验证了CSD驱动方案的正确性和可行性。

Based on the problem of the power loss occurring in the process of driving circuit and dv/dt problem caused by the problem such as switches misleading in the traditional Voltage Source drive （Voltage Source Driver, the VSD） , contrastive analysis of the driving process has been worked between the traditional VSD circuit and Current Source Driver （CSD） in this paper. First, the knowledge of MOSFET is introduced, and then the working process of the traditional MOSFET as the prototype of the VSD circuit is analyzed. On this basis, the continuous current mode working process of the CSD circuit is analyzed, and the advantages and disadvantages are compared with traditional VSD drive circuit. Finally the simulation with Pspice software is validated. Compared with the VSD circuit, the simulation results show that the CSD circuit can greatly reduce the power loss, and it verified the correctness and feasibility of the CSD drive scheme.