Reliability and reliability investigation of wide-bandgap power devices

被引:11
作者
Lutz, Josef [1 ]
Franke, Joerg [1 ]
机构
[1] Tech Univ Chemnitz, Fac ET IT, D-09126 Chemnitz, Germany
关键词
Gate oxide; SiC MOSFET; GaN HEMT; GaN Cif; Power cycling;
D O I
10.1016/j.microrel.2018.07.001
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Established reliability test procedures from Si can widely be applied to SiC, however there are some differences and special challenges. A new test procedure for the gate oxide reliability is suggested, it leads to evaluable results within a reasonable time. Temperature-sensitive electrical parameters (TSEPs), which are necessary for power cycling tests, are investigated. For the SiC MOSFET and the GaN GIT, possible TSEPs are compared and applied to power cycling tests. GaN-based devices have further issues regarding reliability, like charge trapping, dynamic R-on, and degradation effects. The test matrix from Si is not sufficient to cover the reliability requirements for GaN.
引用
收藏
页码:550 / 556
页数:7
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