Analysis of STI Thin-SOI LDMOS transistors for Smart Power and high frequency applications

Conference: CIPS 2008 - 5th International Conference on Integrated Power Electronics Systems
03/11/2008 - 03/13/2008 at Nuremberg, Germany

Proceedings: CIPS 2008

Pages: 5Language: englishTyp: PDF

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Cortes, I.; Fernandez-Martinez, P.; Flores, D.; Hidalgo, S.; Rebollo, J. (Centro Nacional de Microelectr├│nica (CNM-CSIC), 08193 Campus UAB. Bellaterra, Barcelona, Spain)

This paper is addressed to the study of 80V STILDMOS transistors in a Thin-SOI technology by means of 2D numerical simulations. Extensive 2D numerical simulation results allow to compare the electrical performance of the proposed novel STI LDMOS structure with that of a conventional LDMOS in terms of breakdown voltage, specific on-resistance, transconductance (gm), and cut-off frequency (fT). Moreover, the impact of the STI length (LSTI) and the N-drift implantation energy on the electrical characteristics are considered in detail. The benefits of applying the STI concept to higher voltage Thin-SOI LDMOS (in the range of 80V) is analysed in this paper.