公开(公告)号：US20230055714A1

公开(公告)日：2023-02-23

申请号：US17793893

申请日：2021-01-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoyun LI ,  Hui CHENG ,  Zhi XIAO

IPC: H02J7/00 ,  H02H9/04

Abstract: A charging port protection apparatus and a terminal related to the field of terminal technologies are provided, 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.

公开(公告)号：US20190165570A1

公开(公告)日：2019-05-30

申请号：US16320853

申请日：2016-07-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haichao ZHANG ,  Ying XIONG ,  Zhi XIAO

IPC: H02H9/02 ,  H02H9/04 ,  H05K9/00 ,  H01L27/02

Abstract: The present disclosure relates to electrostatic protection terminals. One example terminal includes a target interface, a protected circuit, a protection unit, a switch unit, and a switch control unit. The protected circuit is configured to suppress an electrostatic discharge (ESD) current or an electrical overstress (EOS) current. A first end of the protection unit is electrically connected to a first pin of the target interface. A second end of the protection unit is electrically connected to a second pin of the protected circuit. The first pin is any pin of the target interface. The second pin is a pin that is in the protected circuit and that needs to be electrically connected to the first pin. The switch unit is connected to the protection unit in parallel. The switch control unit is configured to control the switch unit to be open or closed.