对于高辐射场应用的辐射硬化RCC隔离电源的研究
Xiaojin Lu1,2, Hong Yin3, Youran Wu2
1School of Integrated Circuits, Xidian University, Xi'an 710000, China.
Micromachines
|October 29, 2025
概括
本研究介绍了一种经过辐射加固的环转换器 (RCC) 电源,为核环境中的直流-直流转换器提供稳定的电压. 该设计能够承受比传统方法更高的中子辐射水平,提高了关键应用的可靠性.
科学领域:
- 电气工程 电气工程
- 核工程 核工程是指核工程.
- 材料科学 材料科学 材料科学
背景情况:
- 直流-直流转换器需要稳定的功率,特别是在恶劣的核辐射环境中.
- 传统的电源在显著的中子辐射水平下失效.
研究的目的:
- 设计和验证一个经过辐射加固的环转换器 (RCC) 隔离电源.
- 在切换期间在中子辐射下分析VDMOS降解机制.
主要方法:
- 为RCC优化了电路架构和组件选择.
- 集成的变压器隔离和动态参数补偿.
- 系统地揭示了在中子辐射下VDMOS降解机制.
主要成果:
- 在3 × 1013 n/cm2中子辐射后,RCC保持了8.9V的输出,超过了传统设计 (1 × 1013 n/cm2).
- 揭示了VDMOS降解:降低了32-36%的门电压并增加了电阻.
- 建立了适用于极端环境的功率晶体管选择标准.
结论:
- 拟议的RCC设计为防辐射强化功率电子产品提供了强大的解决方案.
- 这些发现使核电站监控和卫星系统的可靠2W功率输出成为可能.
- 提供了一个全面的方法,从设备分析到对辐射硬化系统的电路优化.
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