基于激活能计算的DC／DC电源模块可靠性研究  

Study on Reliability Evaluation Method for DC/DC Power Module

作　　者：章晓文 吕红杰[3] 何小琦 鲍恒伟 ZHANG Xiaowen;LV Hongjie;HE Xiaoqi;BAO Hengwei(Science and Technology on Reliability Physics and Application of Electronic Component,Guangzhou 510610,China;The 5^th Electronics Research Institute of Ministry of Industry and Information Technology,Guangzhou 510610,China;The 43^th Research Institute of China Electronics Technology Group Corporation,Hefei 230088,China)

机构地区：[1]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]工业和信息化部电子第五研究所,广州510610 [3]中国电子科技集团公司第四十三研究所,合肥230088

出　　处：《电子与封装》2018年第A01期9-12,30,共5页Electronics & Packaging

摘　　要：提出了一种DC／DC电源模块激活能的计算方法，通过高温环境下DC／DC电源模块的长期寿命试验，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处理，得出了DC／DC电源模块加速寿命试验的失效时间。依据DC／DC电源模块激活能的计算值，通过加速系数的计算，计算出了工作条件下该DC／DC电源模块的使用寿命时间。结果表明，该型号DC／DC电源模块的使用寿命时间与实际工程应用中15-20年的寿命时间较吻合，说明激活能的计算值可用于工程中，用于评估DC／DC电源模块的可靠性。An active energy calculation method of DC/DC power module is proposed in this paper. Through 10 samples long-time lifetime experiment under high temperature, failure times and total experiment times of the DC/DC power module has been obtained. Failure time of the DC/DC power module under the condition of accelerated life experiment has been calculated in the condition of 60% confidence level. Lifetime of the DC/DC power module under normal operation condition has been deduced by using the accelerated factor, which is calculated based on the calculating value of active energy of the DC/DC power module. Results show that the operation lifetime of the DC/DC power module is consistent with the field lifetime of 15 to 20 years, it means that the calculating value of active energy can be used in the field to evaluate the reliability of DC/DC power module.

关 键 词：激活能计算 DC/DC电源 加速寿命试验 

分 类 号：TN406[电子电信—微电子学与固体电子学]