公开(公告)号：EP3484002A1

公开(公告)日：2019-05-15

申请号：EP16910017.9

申请日：2016-07-26

申请人： Huawei Technologies Co., Ltd.

发明人： ZHANG, Haichao ,  XIONG, Ying ,  XIAO, Zhi

IPC分类号： H02H9/02

摘要： An electrostatic protection circuit includes: a protection unit, configured to suppress an ESD current or an EOS current, where a first end of the protection unit is electrically connected to a first pin of a target interface, a second end of the protection unit is electrically connected to a second pin of a protected circuit, and the first pin is any pin of the target interface; a switch unit, connected to the protection unit in parallel; and a switch control unit, configured to control the switch unit to be open or closed, where an input end of the switch control unit is electrically connected to a power pin or a control signal pin of the protected circuit, and an output end of the switch control unit is electrically connected to a control end of the switch unit.

公开(公告)号：EP4084250A1

公开(公告)日：2022-11-02

申请号：EP21744320.9

申请日：2021-01-20

申请人： Huawei Technologies Co., Ltd.

发明人： LI, Xiaoyun ,  CHENG, Hui ,  XIAO, Zhi

IPC分类号： H02H9/04

摘要： This application is applicable to the field of terminal technologies, and provides a charging port protection apparatus and a terminal, including a first detection circuit, a first discharge circuit, a second detection voltage, and a switch circuit. The first detection circuit generates a first detection voltage based on a peak voltage of an input voltage. The first discharge circuit discharges the peak voltage based on the first detection voltage. The second detection circuit generates a second detection voltage when the input voltage is greater than a first threshold. The switch circuit disconnects the input voltage based on the second detection voltage. This implements not only protection against an ESD and EOS peak voltage, but also protection against a high-voltage direct current. The protection against the peak voltage and the protection against the high-voltage direct current are not mutually limited, which implements protection against impact of electrical over-stress in various forms, and improves reliability of the charging port protection apparatus.