摘要
提出了一种混合厚膜直流-直流(DC-DC)变换器单步进应力加速寿命试验方法。以三种混合厚膜DC-DC变换器为样品,采用提高环境温度并按定时截尾方式进行加速寿命试验,可以在相对短的时间内完成样品的可靠性评估。通过分析失效样品,能够识别设计和制造缺陷,为改进提供依据,最终为混合厚膜DC-DC变换器通过可靠性鉴定并实现航天应用奠定一些基础。
A single step-stress acceleration life test method for hybrid thick film DC-DC converters was proposed.Sampling three kinds of hybrid thick film DC-DC converter,the acceleration life tests were conducted by raising the environmental temperature and under fixed-time curtailment,which can finish the sample′s reliability assessment in a relatively short time.By analyzing the failed sample,it was able to determine the fault of design process,provide basis of improvement,and lay the foundation of passing reliability qualification and realizing space use for the hybrid thick film DC-DC converter.
出处
《中国空间科学技术》
EI
CSCD
北大核心
2010年第3期63-69,共7页
Chinese Space Science and Technology
关键词
直流-直流变换器
加速寿命试验
可靠性评估
失效分析
供配电系统航天器
DC-DC converter Accelerated life test Reliability assessment Failure analysis Power supply and distribution system Spacecraft
