公开(公告)号：US09553576B2

公开(公告)日：2017-01-24

申请号：US14650574

申请日：2013-12-31

Applicant: BYD COMPANY LIMITED

Inventor： Chengyu Lan ,  Qinyao Yang ,  Gang Chen

IPC: H03K3/00 ,  H03K17/567 ,  H03K17/14 ,  H03K17/16 ,  H03K17/785

CPC classification number: H03K17/567 ,  H03K17/14 ,  H03K17/168 ,  H03K17/785

Abstract: A driving circuit for an IGBT module is provided. The driving circuit includes: a gate driving resistor connected with the IGBT module; a driving module connected with the gate driving resistor; an integrating circuit connected with the driving module, in which the integrating circuit comprises an equivalent resistor and a first capacitor connected in series with the equivalent resistor, and a time constant of the integrating circuit is adjusted by changing a resistance of the equivalent resistor; a first optical coupler connected with the integrating circuit; and a micro control unit, connected with the first optical coupler. The disclosed driving circuit for an IGBT module can adjust an equivalent resistance of the gate driving resistor, thus driving the IGBT module working at different powers without replacing the gate driving resistor, and improving an operation state of the IGBT module.

Abstract translation: 提供了IGBT模块的驱动电路。 驱动电路包括：与IGBT模块连接的栅极驱动电阻; 与栅极驱动电阻器连接的驱动模块; 与驱动模块连接的积分电路，其中积分电路包括等效电阻器和与等效电阻器串联连接的第一电容器，并且通过改变等效电阻器的电阻来调整积分电路的时间常数; 与所述积分电路连接的第一光耦合器; 以及与第一光耦合器连接的微控制单元。 所公开的用于IGBT模块的驱动电路可以调节栅极驱动电阻器的等效电阻，从而驱动不同功率工作的IGBT模块，而不需要更换栅极驱动电阻器，并改善IGBT模块的工作状态。