DC/DC电源模块可靠性评价方法研究  

Study on Reliability Evaluation Method for DC/DC Power Module

作　　者：章晓文[1] 吕红杰 何小琦[1] 鲍恒伟[2] 

机构地区：[1]工业和信息化部电子第五研究所电子元器件可靠性物理及其应用技术重点实验室,广州510610 [2]中国电子科技集团公司第四十三研究所,合肥230088

出　　处：《微电子学》2017年第6期872-875,共4页Microelectronics

基　　金：广东省科技重大专项资助项目(2015B090912002)

摘　　要：提出了一种DC/DC电源模块使用寿命可靠性评价方法。在高温环境下进行长期寿命试验,利用试验过程中出现的失效数及总的试验时间,通过一定置信度下的数学计算,得到加速寿命试验的失效时间。依据DC/DC电源模块激活能的工程值计算加速系数,得到该DC/DC电源模块的使用寿命。结果表明,该DC/DC电源模块的使用寿命数据与设计值(1520年)较吻合。该计算方法具有相当好的合理性。A reliability evaluation method of operation lifetime for DC/DC power module was proposed.Through the long-time lifetime experiment under high temperature,the failure frequency and total experiment time of DC/DC power module could be obtained.The failure time of DC/DC power module in the accelerated life experiment could be further calculated under certain confidence level.The lifetime of DC/DC power module under normal operation condition had been deduced by using the accelerated factor,which was calculated based on the engineering value of active energy of the DC/DC power module.Results showed that the calculated operation lifetime of the DC/DC power module was consistent with the practical engineering lifetime of 15 to 20 years,which had validated the proposed calculation method.

关 键 词：DC/DC电源 可靠性评价方法 加速寿命试验 

分 类 号：TN406[电子电信—微电子学与固体电子学]