Method of operating a power transistor formed by a plurality of transistor cells electrically connected in parallel

Abstract

A power transistor is formed by a plurality of transistor cells electrically connected in parallel. Each transistor cell includes a gate structure including a gate electrode coupled to a control terminal and a gate dielectric stack, the gate dielectric stack including a ferroelectric insulator. A method of operating the power transistor includes: switching the power transistor in a normal operating mode by applying a switching control signal to the control terminal, the switching control signal having a maximum voltage and a minimum voltage; and setting the ferroelectric insulator into a defined polarization state by applying a first voltage pulse to the control terminal, the first voltage pulse exceeding the maximum voltage of the switching control signal.

Dependencies are inferred from the claim text.