Insulated gate transistor drive circuit
    2.
    发明公开
    Insulated gate transistor drive circuit 失效
    Isolierte门极晶体管 - Ansteuerschaltung

    公开(公告)号:EP0762652A1

    公开(公告)日:1997-03-12

    申请号:EP96113400.4

    申请日:1996-08-21

    IPC分类号: H03K17/082

    摘要: The cutoff process of a collector current is divided into an emitter-to-collector voltage recovery period and a collector current cutoff period. During the emitter-to-collector voltage recovery period the resistance of a gate resistor is reduced, and during the collector current cutoff period the resistance of the gate resistor is increased. With this arrangement, the cutoff time is shortened, thereby reducing switching loss and suppressing surge voltage.

    摘要翻译: 集电极电流的截止过程分为发射极到集电极电压恢复周期和集电极电流截止周期。 在发射极到集电极电压恢复期间,栅极电阻的电阻降低,并且在集电极电流截止期间,栅极电阻的电阻增加。 通过这种布置,截止时间缩短,从而减小开关损耗并抑制浪涌电压。