中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

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电子与封装 ›› 2025, Vol. 25 ›› Issue (6): 060401 . doi: 10.16257/j.cnki.1681-1070.2025. 0072

• 材料、器件与工艺 • 上一篇    下一篇

基于0.18 μm BCD工艺的抗辐射ESD防护器件GGNMOS优化设计

陆素先,程淩,朱琪,李现坤,李娟,严正君   

  1. 中国电子科技集团公司第五十八研究所,江苏 无锡 214035
  • 收稿日期:2024-11-17 出版日期:2025-06-27 发布日期:2025-06-27
  • 作者简介:陆素先(1994—),女,江苏南通人,硕士研究生,工程师,主要从事模拟电路及电源管理类电路版图设计。

Optimized Design of Radiation-Hardened ESD Protection Device GGNMOS Based on 0.18 μm BCD Process

LU Suxian, CHENG Ling, ZHU Qi, LI Xiankun, LI Juan, YAN Zhengjun   

  1. ChinaElectronics Technology Group Corporation No.58 Research Institute, Wuxi 214035, China
  • Received:2024-11-17 Online:2025-06-27 Published:2025-06-27

摘要: 栅极接地N型金属氧化物半导体(GGNMOS)器件具有结构简单、响应迅速、泄放高效等多方面的优势,逐渐成为静电放电(ESD)防护结构中最常用的器件。但辐照试验时NMOS器件会受到多种辐射效应的影响,导致器件性能和可靠性下降。因此抗辐射电路中GGNMOS器件的保护结构设计尤为困难。基于0.18 μm BCD工艺,设计了一款有抗辐射需求的线性稳压器电路。根据各端口电压和工作特点设计该电路全芯片的ESD防护结构,通过试验分析得出GGNMOS保护结构的薄弱点并提出改进方案。实测结果显示,所设计的电路不仅满足100 krad(Si)的总剂量指标,还通过了2.5 kV的人体模型ESD测试。该研究为后续抗辐射电路中ESD器件设计提供了实验依据和理论指导。

关键词: ESD防护, 栅接地NMOS, 抗辐射, 寄生三极管

Abstract: Gate grounded N-type metal-oxide semiconductor (GGNMOS) devices have the advantages of simple structure, fast response, and efficient discharge, and have gradually become the most commonly used devices in electrostatic discharge (ESD) protection structures. However, during irradiation testing, NMOS devices are affected by various radiation effects, leading to a decrease in device performance and reliability. Therefore, the design of protective structures for GGNMOS devices in radiation-hardened circuits is particularly difficult. A linear regulator circuit with radiation resistance requirements was designed based on 0.18 μm BCD technology. The ESD protection structure for the entire chip of the circuit was designed based on the voltage and operating characteristics of each port. Through experimental analysis, the weak points of the GGNMOS protection structure were identified and improvement solutions were proposed. The actual test results show that the designed circuit not only meets the total dose index of 100 krad (Si), but also passes the 2.5 kV human body model ESD test. This study provides experimental basis and theoretical guidance for the design of ESD devices in future radiation-hardened circuits.

Key words: ESD protection, gate grounded NMOS, radiation-hardened, parasitic transistor

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