基于筛选的DC／DC转换器辐射加固方法研究  

Research on DC/DC Converter Radiation- hardened Method Based on Screening

作　　者：闫家铭[1] 杜磊[1] 包军林[2] 张晓芳[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071 [2]西安电子科技大学微电子学院,陕西西安710071

出　　处：《混合微电子技术》2009年第3期1-4,29,共5页Hybrid Microelectronics Technology

摘　　要：航天应用中的DC／DC转换器的可靠性受辐射影响极大，因此有必要在设计和制造过程中采取一定的辐射加固措施。本文介绍了国外航天DC／DC转换器常用的几种辐射加固方法，论证了这些辐射加固方法的不足之处。重点介绍了针对抗辐射性能的筛选新技术。新技术包括基于噪声敏感参数的小剂量辐照-退火筛选方法，以及美国橡树岭国家实验室最先提出的低频噪声无损筛选方法。在DC／DC转换器制造中采用筛选技术，可以提高转换器的抗辐射性能。Radiation has a great influence on reliability of DC/DC converter in aerospace application. Therefore radiation - hardened measures are needed in the design and fabrication. The paper describes several common radiation - hardened methods used in foreign aerospace DC/DC converter, expounds and proves the disadvantages of these radiationhardened methods. The paper places emphasis on introducing new screening technology aimed at antiradiation characteristic. New technologies include small dose radiation - annealing screening method based on noise - sensitive parameter and low - frequency noise screening method without loss first put forward by Oak Ridge National Laboratory. The use of screening technology in the fabrication of DC/DC converter can improve antiradiation Characteristic of the converter.

关 键 词：DC/DC转换器 电离辐照 1/f噪声 辐射加固 筛选 

分 类 号：TN86[电子电信—信息与通信工程]