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热词
    • 5. 发明授权
    • Protection circuit
    • 保护电路
    • US08643990B2
    • 2014-02-04
    • US13112659
    • 2011-05-20
    • Yiqun CaoHerbert GietlerUlrich Glaser
    • Yiqun CaoHerbert GietlerUlrich Glaser
    • H02H3/20H02H9/04
    • H02H9/046H01L23/60H01L27/0285H01L2924/0002H01L2924/13055H01L2924/13091H01L2924/14H01L2924/00
    • A protection circuit includes a controllable discharge element having a load path coupled between a first second circuit nodes. The discharge element provides a discharge path between the first and the second circuit nodes when in an on state. A trigger circuit has a first connection coupled to the first circuit node and a second connections coupled to the second circuit node. The trigger circuit is configured to produce a drive signal that switches the discharge element to its on state when the voltage between the first and the second circuit nodes reaches a trigger value. A setting circuit coupled to the trigger circuit is configured to change the trigger value from a first trigger value to a second trigger value depending on a voltage between the first and the second circuit nodes and/or on the drive signal.
    • 保护电路包括可控放电元件,其具有耦合在第一第二电路节点之间的负载路径。 当处于导通状态时,放电元件提供第一和第二电路节点之间的放电路径。 触发电路具有耦合到第一电路节点的第一连接和耦合到第二电路节点的第二连接。 触发电路被配置为当第一和第二电路节点之间的电压达到触发值时,产生将放电元件切换到其导通状态的驱动信号。 耦合到触发电路的设置电路被配置为根据第一和第二电路节点之间的电压和/或驱动信号将触发值从第一触发值改变为第二触发值。