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    • 7. 发明授权
    • Gate control circuit for voltage drive switching element
    • 电压驱动开关元件的栅极控制电路
    • US06285235B1
    • 2001-09-04
    • US09266774
    • 1999-03-12
    • Kosaku IchikawaTateo KoyamaHitoshi MatsumuraShinji Sato
    • Kosaku IchikawaTateo KoyamaHitoshi MatsumuraShinji Sato
    • H03K1704
    • H03K17/0406H02M1/08H02M1/38H03K17/04123
    • A gate control circuit for turning on and off an insulated gate semiconductor device having gate, emitter and collector terminals, including a first DC power source coupled to the gate terminal via a first switch and configured to apply a positive voltage to the gate terminal in order to turn on the insulated gate semiconductor device when the first switch is turned on and the second switch is turned off; a second DC power source coupled to the gate terminal via a second switch and configured to apply a negative voltage to the gate terminal in order to turn off the insulated gate semiconductor device when the second switch is turned on and the first switch is turned off; a parallel circuit of a diode and a capacitor coupled in series to the second switch; and a turn off assist circuit configured to produce a negative charge on the capacitor to assist in turning off the insulated gate semiconductor device. In a power converter circuit having a plurality of insulated gate semiconductor devices, equalization of delay times for turning off the insulated gate semiconductor devices is achieved by controlling a charged stored in the capacitor of each gate control circuit based on detected collector-emitter voltages or detected emitter currents.
    • 一种用于接通和断开具有栅极,发射极和集电极端子的绝缘栅极半导体器件的栅极控制电路,包括经由第一开关耦合到栅极端子的第一DC电源,并且被配置为按顺序向栅极端子施加正电压 当所述第一开关接通并且所述第二开关断开时,接通所述绝缘栅极半导体器件; 第二直流电源,经由第二开关耦合到所述栅极端子,并且被配置为向所述栅极端子施加负电压,以在所述第二开关导通并且所述第一开关断开时关闭所述绝缘栅极半导体器件; 耦合到第二开关的二极管和电容器的并联电路; 以及关闭辅助电路,其被配置为在所述电容器上产生负电荷以帮助关闭所述绝缘栅极半导体器件。 在具有多个绝缘栅极半导体器件的功率转换器电路中,通过基于检测到的集电极 - 发射极电压控制存储在每个栅极控制电路的电容器中的电荷来实现用于关断绝缘栅极半导体器件的延迟时间的均衡 发射极电流。