The Research on Influencing Factors of 650V IGBT’s Turn-off dVce/dt Controllability

The high dVce/dt controllability of IGBT is indispensable for the realization of high power conversion and high switching speed. However, during the switching process of IGBT, the dynamic avalanche phenomenon will greatly affect the controllability of dVce/dt. The controllability of dVce/dt during turn-off period is explored in this paper. Through experimental test data and simulation, the influences of frontal structure (FSTR) and application conditions of IGBT on the controllability of dVce/dt are analyzed.