Method and device in power transistor
    4.
    发明授权
    Method and device in power transistor 有权
    功率晶体管的方法和装置

    公开(公告)号:US6021036A

    公开(公告)日:2000-02-01

    申请号:US135572

    申请日:1998-08-18

    IPC分类号: H03K17/16 H02H3/00

    摘要: A method and a device for controlling a switching operation consisting of a turn on or a turn off operation in a voltage controlled power transistor is provided. At least one current source is arranged at the control electrode of the power transistor. The at least one current source controls the recharging of at least one of the capacitances which occurs between the control electrode of the power transistor and the main electrode of the power transistor to determine the time rate of change of at least one of the voltage and current.

    摘要翻译: 提供了一种用于控制由压控功率晶体管中的导通或关断操作组成的开关操作的方法和装置。 在功率晶体管的控制电极处设置至少一个电流源。 至少一个电流源控制在功率晶体管的控制电极和功率晶体管的主电极之间发生的至少一个电容的再充电,以确定电压和电流中的至少一个的时间变化率 。

    High voltage converter circuit
    5.
    发明授权
    High voltage converter circuit 失效
    高电压转换电路

    公开(公告)号:US5920472A

    公开(公告)日:1999-07-06

    申请号:US921087

    申请日:1997-08-29

    摘要: A power supply apparatus for a drive unit in a high voltage converter circuit, the circuit has a plurality of power semiconductors connected in series. Each power semiconductor is connected to a drive unit for turning the power semiconductor on and off. The power supply apparatus consists of a capacitor and a regulator connected in parallel with the power semiconductor. The capacitor is connected to the drive unit and stores sufficient energy for power supply of the drive unit. The regulator regulates the voltage across the capacitor.

    摘要翻译: 一种用于高电压转换器电路中的驱动单元的电源装置,该电路具有串联连接的多个功率半导体。 每个功率半导体连接到用于打开和关闭功率半导体的驱动单元。 电源装置由电容器和与功率半导体并联连接的调节器组成。 电容器连接到驱动单元,并存储足够的能量用于驱动单元的电源。 调节器调节电容器两端的电压。

    Method and device in power transistor
    6.
    发明授权
    Method and device in power transistor 失效
    功率晶体管的方法和装置

    公开(公告)号:US5828539A

    公开(公告)日:1998-10-27

    申请号:US739999

    申请日:1996-10-30

    IPC分类号: H03K17/16 H02H3/00

    摘要: A method and a device for control of a switching operation consisting of a turn-on or turn-off operation in a voltage-controlled power transistor (T1), wherein at least one current source (S1, S2) is arranged at the control electrode (G) of the power transistor for controlling the recharging of at least one of the capacitances which occurs between the control electrode (G) of the power transistor and the main electrodes (C, E) of the power transistor and thus to determine the time rate of change of at least one of the quantities voltage and current.

    摘要翻译: 一种用于控制由压控功率晶体管(T1)中的导通或关断操作组成的开关操作的方法和装置,其中至少一个电流源(S1,S2)布置在控制电极 (G),用于控制在功率晶体管的控制电极(G)和功率晶体管的主电极(C,E)之间发生的至少一个电容的再充电,从而确定时间 至少一个电压和电流的变化率。

    Method and a device for detecting and handling short-circuit phenomena
for power semiconductor devices of turn-off type connected in series
    10.
    发明授权
    Method and a device for detecting and handling short-circuit phenomena for power semiconductor devices of turn-off type connected in series 失效
    用于检测和处理串联连接的关断型功率半导体器件的短路现象的方法和装置

    公开(公告)号:US5990724A

    公开(公告)日:1999-11-23

    申请号:US921065

    申请日:1997-08-29

    摘要: In a method and apparatus used for detecting and handling a short circuit in a circuit having a plurality of power semiconductors connected in series the voltage is divided across the electrodes and each power semiconductor and the magnitude of a small proportion of the voltage is measured. The magnitude of the voltage is compared to a reference voltage at least from when the power semiconductor is turned on. The reference voltage is higher than the maximum voltage across the power semiconductor during normal operation. A short circuit is detected when the magnitude of the measured voltage exceeds the reference voltage.

    摘要翻译: 在用于检测和处理具有串联连接的多个功率半导体的电路中的短路的方法和装置中,电压被划分在电极和每个功率半导体之间,并且测量小部分电压的大小。 至少从功率半导体开启时,将电压的大小与参考电压进行比较。 在正常工作期间,参考电压高于功率半导体上的最大电压。 当测量的电压的大小超过参考电压时,检测到短路。