公开(公告)号：US08643983B2

公开(公告)日：2014-02-04

申请号：US13893138

申请日：2013-05-13

申请人： Power Integrations, Inc.

发明人： Yury Gaknoki ,  Yue Zhang ,  Mingming Mao

IPC分类号： H02H9/02

CPC分类号： H02M1/32 ,  H02H7/1255 ,  H02M3/33569

摘要： This relates to detecting unwanted couplings between a protected terminal and other terminals in an integrated controller of a power supply. Offset and clamp circuitry may apply a positive or negative offset voltage and clamp current to one or more terminals of the controller. In the event that a terminal having the offset voltage and clamp current is accidentally coupled to the protected terminal, the offset voltage and clamp current may be applied to the protected terminal. The protected terminal may be coupled to a fault detection circuitry operable to detect a fault signal at the protected terminal. The fault detection circuitry of the controller may cause the power supply to shut down in response to a detection of the fault signal at the protected terminal or may cause the power supply to shut down in response to a detection of a predefined threshold number of cycles in which the fault signal is detected.

摘要翻译： 这涉及在电源的集成控制器中检测受保护终端与其他终端之间的不期望的耦合。 偏移和钳位电路可以向控制器的一个或多个端子施加正或负偏移电压和钳位电流。 在具有偏移电压和钳位电流的端子意外地耦合到受保护的端子的情况下，可以将偏移电压和钳位电流施加到受保护的端子。 受保护终端可以耦合到可操作以检测受保护终端处的故障信号的故障检测电路。 控制器的故障检测电路可以响应于检测到受保护终端处的故障信号而导致电源关闭，或者可以响应于检测到预定义的阈值数量的周期而导致电源关闭 检测到故障信号。