Voltage test device for IGBT power devices

Abstract

The present invention discloses a voltage testing device for an IGBT power device, comprising: a control board, a heat sink and a voltage detection component, wherein a first plug interface and a second plug interface are formed on the control board, a gate pin of the IGBT power device is suitable for plugging into the first plug interface, and an emitter pin of the IGBT power device is suitable for plugging into the second plug interface; the heat sink is arranged on a side of the IGBT power device away from the control board; the voltage detection component comprises a detection probe and a spring probe, one end of the detection probe is connected to an end of the gate pin adjacent to the gate through a first DuPont line, the other end of the detection probe is suitable for connecting to a voltage detection device through a connecting line, and the spring probe is connected to an end of the emitter pin adjacent to the emitter through a second DuPont line. According to the voltage testing device of the present invention, the influence of gate voltage oscillation on the gate voltage signal can be reduced, so that the gate voltage signal measured by the voltage detection component is closer to the actual gate voltage signal of the IGBT power device, and the measurement accuracy of the gate line signal is improved.

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