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Interface overcurrent protection circuit

An overcurrent protection circuit and interface technology, applied in the direction of protection against overcurrent and overvoltage, can solve problems such as grid instability, slow response, potential difference, etc., to ensure hardware safety and The effect of data security

Pending Publication Date: 2021-10-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, although the circuit design for the serial communication interface takes into account the problems of circuit surge protection, static electricity and other instantaneous high-voltage shocks, there is also an over-current protection design, such as using a current-limiting chip, but the response is slow and cannot be timely action, the problem of burning the communication interface equipment will occur, it does not play the role of over-current protection, and there are still potential safety hazards caused by potential differences or unstable power grids

Method used

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Embodiment Construction

[0022] In order for those skilled in the art to better understand the technical solution of the present disclosure, the interface overcurrent protection circuit provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

[0023] Example embodiments will be described more fully hereinafter with reference to the accompanying drawings, but may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] The terminology used herein is for describing particular embodiments only and is not intended to limit the present disclosure. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood tha...

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PUM

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Abstract

The invention provides an interface overcurrent protection circuit. The protection circuit comprises a serial communication interface and a transient blocking unit, and the transient blocking unit is connected between at least one power line in the serial communication interface and a post-stage circuit in series. The transient blocking unit is configured to enable the corresponding power line and the post-stage circuit to be disconnected when the current of the line where the transient blocking unit is located is larger than a preset trigger current value, and recover the connection between the corresponding power line and the post-stage circuit when the voltage difference between the two ends of the transient blocking unit is smaller than a preset reset voltage.

Description

technical field [0001] The present disclosure relates to the technical field of electronic products, in particular to an interface overcurrent protection circuit. Background technique [0002] With the development of electronic product technology, serial communication interfaces have been widely used in corresponding fields. At this stage, although the circuit design for the serial communication interface takes into account the problems of circuit surge protection, static electricity and other instantaneous high-voltage shocks, there is also an over-current protection design, such as using a current-limiting chip, but the response is slow and cannot be timely Action, there will be the problem of burning the communication interface equipment, it does not play the role of over-current protection, and there are still potential safety hazards caused by potential differences or unstable power grids. Contents of the invention [0003] The present disclosure aims to solve at lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08H02H3/20
CPCH02H3/08H02H3/20
Inventor 张本军徐加征
Owner ZTE CORP