具有新二极管结构的SEE-Tolerant模拟开关芯片的设计
Wei Huang1, HongXia Liu1, Qing Xu2
1School of Microelectronics, Xidian University, Xi'an 710000, People's Republic of China.
Nanotechnology
|May 30, 2024
概括
本研究引入了一种新的电路设计,以提高模拟开关的辐射耐受性. 一个新的二极管单元有效地减少了单次事件效应 (SEE),提高了设备在高辐射环境中的可靠性.
科学领域:
- 电气工程 电气工程
- 微电子学微电子学
- 辐射的影响 辐射影响
背景情况:
- 模拟开关容易受到来自辐射的单一事件效应 (SEE).
- 使用商业1μm CMOS工艺制造的高压模拟开关芯片对单个粒子具有敏感性.
- 了解单粒子灵敏性的机制对于提高辐射耐受性至关重要.
研究的目的:
- 提出并验证一种新的电路级设计,以提高模拟开关集成电路的辐射耐受性.
- 为了减轻高压模拟开关中的单一事件效应 (SEE).
- 在辐射密集的环境中提高电子元件的可靠性.
主要方法:
- 在商用1μm CMOS高压模拟开关中分析单粒子灵敏机制.
- 在MOSFET中实施二极管单元来降低寄生性三极管的门源电压 (VGS).
- 单粒子辐射实验在未加强和二极管加强的模拟开关芯片上进行.
- 在不同辐射流量 (37.2和75.8 MeV•cm2mg−1) 下的电源电流行为比较.
主要成果:
- 未加强的装置显示电源电流在75.8MeV•cm2mg-1.1的辐射下在11秒内激增到100mA.
- 带有二极管单元的增强装置在37.2和75.8 MeV•cm2mg-1.1的辐射下保持稳定的电源电流.
- 加强的模拟开关芯片显示SEE容忍度超过75.8 MeV•cm2mg−1.1.
结论:
- 新型电路级设计有效地提高了模拟开关的辐射耐受性.
- 集成二极管单元显著降低了寄生性三极管激活的概率,从而减轻SEE.
- 这种设计为提高模拟开关在恶劣辐射环境中的可靠性提供了一个有希望的解决方案.
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