公开(公告)号：US09543752B2

公开(公告)日：2017-01-10

申请号：US14042436

申请日：2013-09-30

Applicant: BROADCOM CORPORATION

Inventor： Jan Roelof Westra ,  Jan Mulder ,  Qiongna Zhang ,  Jeffrey Allan Riley ,  Davide Vecchi

IPC: H02H3/20 ,  H01L23/60 ,  H01L27/02 ,  H01Q1/50

CPC classification number: H02H3/20 ,  H01L23/60 ,  H01L27/0248 ,  H01Q1/50

Abstract: A device for digitally protecting against an overvoltage event may include a front-end circuit, an overvoltage protection circuit, and a protection switch. The protection switch may be coupled to the overvoltage protection circuit and may be configured to decouple the front-end circuit from an external medium, in response to a clamp signal. The overvoltage protection circuit may be configured to detect the overvoltage event at one or more nodes of a circuit. In response to the detection of the overvoltage event, the overvoltage protection circuit may generate the clamp signal to activate the protection switch.

Abstract translation: 用于数字防止过电压事件的装置可以包括前端电路，过电压保护电路和保护开关。 保护开关可以耦合到过电压保护电路，并且可以被配置为响应于钳位信号将前端电路与外部介质去耦。 过电压保护电路可以被配置为检测电路的一个或多个节点处的过电压事件。 响应于过电压事件的检测，过电压保护电路可产生钳位信号以激活保护开关。