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A double-trigger structure esd power clamp protection circuit

A trigger circuit and clamp protection technology, which is applied in the field of microelectronics, can solve the problems of large leakage current and easy false triggering, and achieve the effects of low leakage current, increased delay time, and increased conduction time

Active Publication Date: 2022-03-22
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and propose a kind of ESD power supply clamp protection circuit with double trigger structure, which can solve the leakage of existing ESD power supply clamp protection circuit under the premise of providing reliable ESD protection performance The problem of high current and easy false triggering

Method used

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  • A double-trigger structure esd power clamp protection circuit
  • A double-trigger structure esd power clamp protection circuit
  • A double-trigger structure esd power clamp protection circuit

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Embodiment Construction

[0016] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0017] refer to figure 1 Further description of the overall circuit structure topology of the present invention.

[0018] The invention includes a transient trigger circuit, a static trigger circuit, a synthesis control circuit and a discharge circuit.

[0019] The output terminal S1 of the transient trigger circuit is connected to the first input terminal of the synthesis control circuit, the output terminal S2 of the static trigger circuit is connected to the second input terminal of the synthesis control circuit, and the feedback terminal S3 of the synthesis control circuit It is connected with the input end of the static trigger circuit, and the output end S4 of the synthesis control circuit is connected...

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Abstract

The invention discloses a double-trigger structure ESD power clamp protection circuit, which comprises a transient trigger circuit, a static trigger circuit, a composite control circuit and a discharge circuit. The transient trigger circuit identifies the ESD impact signal through the RC network. The static trigger circuit monitors voltage signals through diode strings. The synthesis control circuit is used to control the opening and closing of the discharge circuit. The ESD power supply clamping protection circuit provided by the present invention can solve the problem of large leakage current and easy false triggering of the existing ESD power supply clamping protection circuit on the premise of providing reliable ESD protection performance.

Description

technical field [0001] The invention belongs to the technical field of microelectronics, and further relates to an ESD (Electronic Static Discharge) power supply clamp protection circuit with a double trigger structure in the technical field of integrated circuits. The invention can be used to be integrated in analog and radio frequency chips to protect the chips from ESD. Background technique [0002] The ESD power supply clamp protection circuit is the key module to realize the full-chip ESD protection of the integrated circuit. Its function is to provide a low-impedance current path when the ESD signal comes, so as to protect the internal circuit from the impact of high current. The traditional ESD power supply clamp protection circuit meets the function of chip ESD protection, but there are disadvantages such as large leakage current, easy false triggering, and large chip area. In order to achieve a better chip ESD protection effect, the ESD power supply clamp protectio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04
CPCH02H9/046
Inventor 李振荣陆益军杨艳梅乔佳刘帅张新雨
Owner XIDIAN UNIV
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