IEEE Journal of the Electron Devices Society (Jan 2017)

Low Loss Insulated Gate Bipolar Transistor With Electron Injection (EI-IGBT)

  • Wanjun Chen,
  • Hong Tao,
  • Lunfei Lou,
  • Chao Liu,
  • Wu Cheng,
  • Xuefeng Tang,
  • Hongquan Liu,
  • Qi Zhou,
  • Xiaochuan Deng,
  • Zhaoji Li,
  • Bo Zhang

DOI
https://doi.org/10.1109/JEDS.2017.2701791
Journal volume & issue
Vol. 5, no. 4
pp. 275 – 282

Abstract

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A new type insulated gate bipolar transistor (IGBT) with electron injection (EI-IGBT) is proposed in which an N+-buried layer is implemented in P-base region. The mechanism of the EI-IGBT is that electrons are injected in both OFF- and ON-state, thus accelerated electron-hole recombination is achieved, resulting in a fast turn-off process. Meanwhile, a low forward voltage drop is obtained due to an enhanced conductivity modulation. The simulation results show that, compared with the conventional IGBT, the proposed EI-IGBT delivers a comparable breakdown voltage while featuring an 80% shorter turn-off time (or a 72% lower turn-off loss) or a 23% lower forward voltage drop, resulting in a reduction of total energy loss.

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