Switching element control circuit and power module

A switching element control circuit configured to perform a measurement mode in which a threshold voltage of a switching element having a first electrode, a second electrode, and a third electrode is measured and a control mode in which an ON/OFF operation of the switching element is controlled in a switching manner, the switching element control circuit comprising:

• a threshold voltage measurement power source which supplies, in the measurement mode, an electric current to the first electrode of the switching element;
• a third electrode voltage control part which controls, in the measurement mode, a third electrode voltage such that the third electrode voltage is increased in a stepwise manner and controls, in the control mode, the third electrode voltage so as to control the ON/OFF operation of the switching element;
• an ON/OFF state determination part which determines, in the measurement mode, an ON/OFF state of the switching element;
• and
• a memory part which stores, in the measurement mode, the third electrode voltage applied to the third electrode as a threshold voltage of the switching element when the ON/OFF state determination part determines that the switching element is brought into an ON state, wherein
• the third electrode voltage control part controls, in the control mode, the third electrode voltage based on information including the threshold voltage stored in the memory part at the time of bringing the switching element into an ON state.