Advanced electrothermal Spice modelling of large power IGBTs
R. Azar, Florin Udrea, Wai Tung Ng, F.P. Dawson, W. Findlay, P. Waind, G.A.J. Amaratunga
Abstract
R. Azar, Florin Udrea, Wai Tung Ng, F.P. Dawson, W. Findlay, P. Waind, G.A.J. Amaratunga
Abstract
A novel IGBT electrothermal model is implemented for the first time in PSpice for the simulation of steady state and transient temperature dependent IGBT operation including self-heating and latchup. A thermal circuit representing the characteristics of the IGBT package is developed and validated against a finite element model and experimental results. A novel electrical IGBT model based on the Kraus model is developed to account for the electrical impact of instantaneous junction temperature variations owing to self-heating. The resulting electrothermal model is validated against experimental DC and transient FBSOA measurements.
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A novel IGBT electrothermal model is implemented for the first time in PSpice for the simulation of steady state and transient temperature dependent IGBT operation including self-heating and latchup. A thermal circuit representing the characteristics of the IGBT package is developed and validated against a finite element model and experimental results. A novel electrical IGBT model based on the Kraus model is developed to account for the electrical impact of instantaneous junction temperature variations owing to self-heating. The resulting electrothermal model is validated against experimental DC and transient FBSOA measurements.
Key concepts: Insulated-gate bipolar transistor, Spice, Transient (computer programming), Junction temperature, Power (physics), Steady state (chemistry), Thermal, Electrical engineering