汽车级IGBT驱动电路设计研究

Research on automotive standard drive and protection circuit of IGBT

为解决绝缘栅双极性晶体管(IGBT)在实际应用中的驱动电路问题,采用汽车级功率驱动芯片1ED020I12FTA对IGBT的保护、驱动电路进行了设计与研究,开发了用于电机驱动系统的IGBT驱动与检测电路。详细阐述了保护电路的保护机制及电路原理、门极驱动电路及门极电阻选择、EMS设计等内容,最后对设计的驱动电路进行了测试,给出了测试波形图。试验结果表明,该IGBT驱动电路输出稳定,能很好地开/断IGBT,具有良好的可靠性和稳定性,其在实际电驱动系统中能可靠输出所需功率。

In order to research the drive and protection circuit of insulated gate bipolar transistor（IGBT）,a protection and drive scheme based on automotive standard IC 1ED020I12FTA was designed and implemented on the motor drive system.The protection principle,the gate drive circuit and the selection of gate drive resistance and the EMS design were explained in detail.Finally,a complete experimental system was built and tested.The experimental results show that the designed drive circuit has good switch performance.The motor drive system with this circuit has high reliability and stability and can output the power the motor needed.