MONITORING METHOD AND DEVICE FOR POWER SEMICONDUCTOR SWITCH

摘要

An exemplary power semiconductor switch is configured to be controlled on the basis of a gate voltage signal driven by a gate driver unit. The device includes a measuring component for generating a saturation voltage signal on the basis of a voltage over the power semiconductor switch, and an auxiliary switch connected between a saturation voltage signal line carrying the saturation voltage signal and an output of the gate driver unit driving the gate voltage signal. The auxiliary switch is configured to be controlled to a conductive state or a non-conductive state on the basis of the gate voltage signal. A feedback component is provided for generating a saturation feedback signal on the basis of the saturation voltage signal.

主权项

1. A device for a power semiconductor switch configured to be controlled on the basis of a gate voltage signal driven by a gate driver unit, the device comprising:
measuring means for generating a saturation voltage signal on the basis of a voltage over the power semiconductor switch; an auxiliary switch connected between a saturation voltage signal line carrying the saturation voltage signal and an output of the gate driver unit driving the gate voltage signal, wherein the auxiliary switch is configured to be controlled to a conductive state or a non-conductive state on the basis of the gate voltage signal; and feedback means for generating a saturation feedback signal on the basis of the saturation voltage signal.