using a first sensor component and at least one second sensor component in the electronic power circuit to respectively measure a first current/temperature value or a first variable value which is distinctly dependent on the first current/temperature value and at least one second current/temperature value or a second variable value which is distinctly dependent on the second current/temperature value, wherein the first and the at least one second sensor component respectively have voltage/current temperature characteristics which are linearly independent from one another and wherein at least one of the sensor components is a parasitic component of the electronic power circuit; and

during operation of the electronic power device, calibrating a first current/temperature value or first variable value measured by the first sensor component on the basis of current/temperature measurements by the at least one second sensor component at least two different temperatures and different current values using a calibration process which takes place during a production process of the electronic power circuit, wherein the first current/temperature value or first variable value measured by the first sensor component is adjusted using parameters ascertained during the calibration process to compensate for the temperature and/or current dependence of the measured first variable value.