Characterization and Modeling of 4H-SiC Lateral MOSFETs for Integrated Circuit Design

被引:36
作者
Mudholkar, Mihir [1 ]
Mantooth, H. Alan [2 ]
机构
[1] ON Semicond, Standard Prod Grp, Phoenix, AZ 85008 USA
[2] Univ Arkansas, Dept Elect Engn, Fayetteville, AR 72701 USA
关键词
Device characterization; device modeling; device simulation; MOSFET; silicon carbide (SiC); SILICON-CARBIDE; INTERFACE; DEVICES; TRAP;
D O I
10.1109/TED.2013.2258287
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
A new process in 4H-SiC is developed that features n-type buried and inversion channel lateral MOSFETs that are fabricated with several different channel lengths (2-8 mu m) and widths (8-32 mu m) and characterized over a wide temperature range (25 degrees C-225 degrees C). It is shown that the on-resistance of enhancement-mode SiC MOSFETs reduces with temperature despite a reduction in inversion mobility because of the interaction of interface states with temperature. To enable integrated circuit development using the developed MOSFETs, their electrical characteristics are modeled over geometry and temperature using the industry standard PSP MOSFET model. A new mathematical formulation to describe the presence of the interface states is also developed and implemented in the PSP model, and excellent agreement is shown between measurement and simulation using the modified PSP model.
引用
收藏
页码:1923 / 1930
页数:8
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