摘要
高温可靠性测试如高温栅偏(High Temperature Gate Bias,HTGB)、高温反偏(High Temperature Reverse Bias,HTRB)、高温高湿反偏(High Humidity High Temperature Reverse Bias,H3TRB)是器件出厂和寿命评估必备的测试。然而,不同标准的测试条件不尽相同,其对应的内在机理也不明确。为讨论测试条件的确定原则,首先从单个和耦合的温度、电场、湿度加速老化模型出发,论述了相关测试标准所用模型,分析了其应用范围和使用原则。进一步地,总结了现有各类标准下的测试条件,计算了电动汽车模块正常运行30年所需HTGB、HTRB、H3TRB加速老化时间分别为832 h、866 h、1038 h,测试的样本数均为70,并指出测试时间、样本数需根据实际工况决定。最后,基于以上分析,提出了一种加速老化时间、样本数可调的高温可靠性测试流程。
High temperature reliability tests such as High Temperature Gate Bias(HTGB),High Temperature Reverse Bias(HTRB)and High Humidity High Temperature Reverse Bias(H3TRB)are essential tests for device lifetime evaluation.However,the test conditions vary from standard to standard,and the corresponding intrinsic mechanism is not clear.In order to discuss the principles for determining the test conditions,we started from the single or coupled accelerated aging models of temperature,electric field and humidity,discussed the models used in relevant test standards,and analyzed the applying range and using principle of every life model.Furthermore,we summarized the existing standard test conditions and calculated that the accelerated aging test time of HTGB,HTRB,H3TRB required for 30 years of normal operation of electric vehicle modules as 832 h,866 h,1038 h respectively,and the number of samples tested were 70.It points out that test time and sample size should be determined by actual working conditions.Finally,based on the analysis above,the test flow for high temperature reliability test is proposed,which is adjustable for testing time and sample size.
作者
王延浩
邓二平
严雨行
吴立信
黄永章
WANG Yanhao;DENG Erping;YAN Yuxing;WU Lixin;HUANG Yongzhang(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Beijing 102206,China;NCEPU(Yantai)Power Semiconductor Technology Research Institute Co.,Ltd.,Yantai 264006,China;School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China)
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2023年第5期68-77,86,共11页
Journal of North China Electric Power University：Natural Science Edition
基金
国家自然科学基金资助项目(52007061).
关键词
高温可靠性测试
加速老化模型
寿命评估
测试标准
测试条件
high temperature reliability test
accelerated aging models
lifetime evaluation
test standards
test condition
