Modeling of igbt with high bipolar gain for mitigating gate voltage oscillations during short circuit

Paula Diaz Reigosa, Francesco Iannuzzo, Chiara Corvasce, Munaf Rahimo

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5 Citationer (Scopus)
145 Downloads (Pure)

Abstract

In this paper, the impact of the p-n-p bipolar transistor gain on the short-circuit behavior of high-voltage trench insulated-gate bipolar transistors (IGBTs) is analyzed. The short-circuit ruggedness against high-frequency oscillations is strongly improved by increasing the hole current supplied by the collector. By doing so, the electric field at the emitter of the IGBT is increased and less influenced by the amount of the excess charge (i.e., the electric field is fixed). The charge-field interactions during the short circuit event, leading to periodic charge storage and charge removal effect and provoking miller capacitance variations, can be mitigated. The effectiveness of using IGBTs with a high bipolar gain is validated through both simulations and experiments, also a design rule to tradeoff the IGBT’s losses and short-circuit robustness is provided.
OriginalsprogEngelsk
Artikelnummer8698267
TidsskriftIEEE Journal of Emerging and Selected Topics in Power Electronics
Vol/bind7
Udgave nummer3
Sider (fra-til)1584 - 1592
Antal sider9
ISSN2168-6777
DOI
StatusUdgivet - sep. 2019

Emneord

  • Insulated gate bipolar transistors
  • Oscillators
  • Logic gates
  • Inductance
  • Integrated circuit modeling
  • Doping
  • Capacitance
  • Insulated gate bipolar transistor
  • bipolar gain
  • short circuit
  • gate oscillations
  • parametric oscillation
  • robustness
  • Kirk Effect
  • TCAD

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