运算放大器单粒子瞬态脉冲效应试验评估及防护设计

发布时间：2018-01-18 12:23

本文关键词：运算放大器单粒子瞬态脉冲效应试验评估及防护设计　出处：《空间科学学报》2017年02期 　论文类型：期刊论文

【摘要】：线性器件的单粒子瞬态脉冲效应(SET)具有瞬发性和传播性,其对星用电子系统和设备的在轨故障定位及防护设计造成较大困难,已成为威胁航天器可靠性的重要因素之一.星用电子设备需要对所采用线性器件的SET特征进行细致的试验评估,以确定其最坏情况,并在此基础上结合具体应用电路特点进行有针对性的滤波等防护设计.本文以典型的星用线性器件LM124运算放大器作为研究对象,利用脉冲激光对其SET特征进行试验评估,得到宽度为35μs、幅度为7.2 V的最坏情况SET参数.利用Hspice仿真验证LM124的SET特性与规律,针对最坏情况SET,仿真设计了外围滤波电路,研究不同减缓电路参数对SET脉冲的抑制效果,确定出最优电路参数.再次利用脉冲激光试验检验滤波电路对最坏情况SET的减缓效果,结果表明采用最优参数设计的滤波电路对最坏情况SET有较好的抑制作用,能够满足通常的应用电路需求.
[Abstract]:Single particle transient pulse effect (set) of linear devices is transient and transmissible, which makes it difficult to locate and protect satellite electronic systems and devices in orbit. Satellite electronic devices need to evaluate the SET characteristics of linear devices carefully to determine the worst case. On this basis combined with the characteristics of specific application circuits targeted filtering and other protection design. This paper takes the typical satellite linear device LM124 operational amplifier as the research object. The SET characteristics were evaluated by pulsed laser, and the width was 35 渭 s. The Hspice simulation is used to verify the SET characteristics and rules of LM124, and the peripheral filter circuit is designed for the worst-case set. The suppression effect of different slowing circuit parameters on SET pulse is studied, and the optimal circuit parameters are determined. The pulse laser experiment is used to test the effect of filtering circuit on the SET in the worst-case condition. The results show that the filter circuit designed with optimal parameters can restrain the worst-case SET well and can meet the requirements of common application circuits.
【作者单位】：中国科学院国家空间科学中心空间环境特殊效应实验室;中国科学院大学;
【基金】：国家自然科学基金项目资助(41304148)
【分类号】：TN722.77
【正文快照】： 0引言模拟电路的单粒子瞬态脉冲(Single Evnit,Trailsieiit.SET)足在一定偏青条件下.单个高能粒子轰击电路的灵敏节点从而在电路输出端引起的瞬时电压信号输出卩.2],为区别于数字电路组合逻辑链中的SET,也称其为ASET.模拟电路的SET效应通常具有LET阈值低、截面大、幅度高

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