POWER MODULE FOR THE OPERATION OF AN ELECTRIC VEHICLE DRIVE WITH IMPROVED TEMPERATURE DETERMINATION OF THE POWER SEMICONDUCTOR

Method for measuring an operating temperature of a power module () that is used for operating an electric vehicle drive, the power module () comprising a plurality of semiconductor switching elements () and drive electronics (), wherein the semiconductor switching elements () can be switched by the drive electronics () in such a way that the semiconductor switching elements () allow or interrupt a drain-source current in order to convert the direct current fed into the power module () at the input side into an output-side alternating current, wherein the method comprises measurement of a voltage present at a point located on a side of a diode () that is connected in series with the semiconductor switching element () and that faces away from the semiconductor switching element (), wherein the method comprises measurement of a drain-source current of the semiconductor switching element () that is generated by a current source (), wherein the method comprises determination of a mathematical dependency between the measured voltage and the measured current.