Reliability of DC/DC power supply module - 文章详情页

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The　reliability　of　DC/DC　power　supply　module-multichip　module　was　investigated.　By　statistics　the　failure　of　modules　applied　and　analysis　the　temperature　distribution　of　the　module　used　ANSYS　software,　it　has　found　that　the　key　devices　affecting　the　reliability　are　VDMOS　and　SBD　in　the　module.　Then　the　VDMOS　and　SBD　were　tested　under　constant　electrical　stress　and　progressive　temperature　stress　based　on　the　parameter　degradation.　It　concludes　that　the　failure　sensitive　parameter　are　transconductance　gm　for　VDMOS　and　reverse　current　IR　for　SBD,　the　average　life　span　of　VDMOS　and　SBD　are　1.47×107　hours　and　4.3×107　houres　respectively　from　the　extrapolation　of　accelerated　life　test　curve.　In　conclusion,　the　degradation　of　VDMOS　and　SBD　is　dependent　on　the　Na+　contamination　and　Si-SiO2　interface　degradation.　At　same　time,　the　degradation　of　SBD　is　also　dependent　on　Al-Si　interface　degradation.

关键词：

Aluminum compounds DC-DC converters Multicarrier modulation Multichip modules Outages Reliability Reliability analysis Silica Sodium compounds Software reliability Testing Thermoanalysis

作者机构：

[ 1 ] [Lü, Chang-Zhi]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Ma, Wei-Dong]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Xie, Xue-Song]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Zhang, Xiao-Ling]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Liu, Yang]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Huang, Chun-Yi]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Li, Zhi-Guo]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China

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