A Comparative Study 4500-V Edge Termination Techniques for SiC Devices

被引:42
作者
Sung, Woongje [1 ,2 ]
Baliga, B. J. [3 ]
机构
[1] State Univ New York Polytech Inst, Coll Nanoscale Sci, Albany, NY 12203 USA
[2] State Univ New York Polytech Inst, Coll Engn, Albany, NY 12203 USA
[3] North Carolina State Univ, PowerAmer Inst, Raleigh, NC 27695 USA
关键词
4H-Silicon Carbide (4H-SiC); edge termination; floating field ring (FFR); guard ring; JTE; junction termination extension (JTE); silicon carbide; DIODES;
D O I
10.1109/TED.2017.2664051
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
This paper compares five edge termination techniques for SiC high-voltage devices: single zone junction termination extension (JTE), ring assisted-JTE (RA-JTE), multiple floating zone-JTE, hybrid-JTE, and floating field rings. PiN diodes with these edge terminations were fabricated on a 4.5kV-rated 4H-silicon carbide (4H-SiC) epi-layer. It was experimentally demonstrated that the Hybrid-JTE provides a nearly ideal breakdown voltage (99% of the ideal parallel plane breakdown voltage) with a stable avalanche blocking behavior. RA-JTE, with tight control of the JTE implant dose, is demonstrated to be the most area-efficient edge termination structure for SiC power devices.
引用
收藏
页码:1647 / 1652
页数:6
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