A novel low trigger voltage low leakage SCR for low-voltage ESD protection

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-04 DOI:10.1088/1361-6641/ad1b14

Jizhi Liu, FEILONG YANG, YILIN LIU

引用次数: 0

Abstract

Reducing trigger voltage has always been a research hotspot in low-voltage electrostatic discharge (ESD) protection applications for integrated circuit. Thus, a novel low trigger voltage low leakage silicon-controlled rectifier (LTVLLSCR) for low-voltage ESD protection has been proposed. The proposed device uses a PMOS connected with the SCR to reduce the trigger voltage and the PMOS gate can be applied with the supply voltage to further reduce the trigger voltage and the leakage current. The operating principle and the physical mechanism of the proposed device were discussed by the Human Body Model simulation. The ESD characteristics of the proposed device were verified in 55 nm CMOS process. The experimental results demonstrate that the trigger voltage of the proposed device can reach a minimum of 2.86 V with an external bias, and the leakage current at 25 ℃ is about 1 nA which can be reduced by 13% with an external bias. With lower trigger voltage, lower leakage, smaller ESD design window and good ESD robustness, the LTVLLSCR is very suitable for 1 V low voltage applications.

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用于低压静电放电保护的新型低触发电压低漏电可控硅

降低触发电压一直是集成电路低压静电放电（ESD）保护应用的研究热点。因此，我们提出了一种用于低压静电放电保护的新型低触发电压低漏电可控硅整流器（LTVLLSCR）。该器件使用与可控硅相连的 PMOS 来降低触发电压，PMOS 栅极可通过电源电压进一步降低触发电压和泄漏电流。通过人体模型仿真讨论了所提器件的工作原理和物理机制。在 55 nm CMOS 工艺中验证了所提器件的 ESD 特性。实验结果表明，在外部偏压的作用下，该器件的触发电压最低可达 2.86 V，25 ℃ 时的漏电流约为 1 nA，在外部偏压的作用下可降低 13%。LTVLLSCR 具有更低的触发电压、更低的漏电流、更小的 ESD 设计窗口和良好的 ESD 鲁棒性，非常适合 1 V 低电压应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.