Semiconductor device

A semiconductor device, comprising:

• a semiconductor transistor being composed of a plurality of cells;
• and
• a sensor circuit sensing temperature information regarding the temperature of said semiconductor transistor, wherein
• said semiconductor transistor includes a main cell group including a cell for supplying a current to a load among said plurality of cells, a sense cell group including a cell for sensing said temperature information thereamong, and another sense cell group including at least a part of the cells other than the cells included in said main cell group and said sense cell group thereamong, said another sense cell group being used for sensing said temperature information,
• said main cell group and said sense cell group have different temperature characteristics showing changes in electrical characteristics to changes in temperature of said semiconductor transistor,
• said sense cell group and said another sense cell group have different temperature characteristics showing changes in electrical characteristics to changes in temperature of said semiconductor transistor, and
• said sensor circuit senses said temperature information based on a value of a sense current flowing through said sense cell group and a value of another sense current flowing through said another sense cell group.