Simulation study of a novel snapback free reverse-conducting SOI-LIGBT with embedded P-type schottky barrier diode

Bo YI, Jia LIN, Bingke ZHANG, Junji CHENG, Yong XIANG*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

29 Citations (Scopus)

Abstract

In this article, a novel reverse-conducting lateral insulated gate bipolar transistor (RC-LIGBT) with embedded diode and p-type Schottky Barrier Diode (p-SBD) is proposed. The two diodes are connected in series through a floating electrode, which provides a current path for carriers in reverse-conducting mode. Compared with the Separated Shorted-Anode RCLIGBT (SSA-RC-LIGBT), the proposed structure not only eliminates the snapback voltage ( ΔVSB) but also avoids the waste of device area. Therefore, the superior reverse recovery characteristics and excellent tradeoff relationship between ON-state voltage (VON) and turn-off loss (EOFF) are obtained. The reverse recovery charge of the proposed RC-LIGBT shows 43.9% and 63.2% reduction compared with those of the SSA-RC-LIGBT with LB (distance between the p+ collector and the shorted n+ collector) being 34 and 64 μm, respectively. The turn-off loss of the proposed RC-LIGBT at VON = 2.6 V is reduced by 68.2% and 87.1% compared with those of the SSA-RC-LIGBT with ΔVSB = 0.48 V and ΔVSB = 0.17 V, respectively. Moreover, the proposed RC-LIGBT has a self-adjusted collector injection efficiency under different temperatures to dramatically improve the Short Circuit Safe Operation Area (SCSOA).

Original languageEnglish
Article number9057517
Pages (from-to)2058-2065
Number of pages8
JournalIEEE Transactions on Electron Devices
Volume67
Issue number5
DOIs
Publication statusPublished - May 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1963-2012 IEEE.

Funding

This work was supported in part by the National Natural Science Foundation of China under Grant 61804021, in part by the Fundamental Research Funds for the Central Universities under Grant ZYGX2019J020, and in part by the Scholarship from China Scholarship Council under Grant 201908515126.

Keywords

  • reverse recovery
  • Reverse-conducting lateral insulated gate bipolar transistor (RC-LIGBT)
  • Schottky barrier diode
  • turn-off loss

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