| 摘要 |
The present invention is provided with a temperature-detecting circuit (4), a current source (5), an amplifying circuit (9), a current-adjusting circuit (12), and a driving circuit (7, 8). The temperature-detecting circuit detects the temperature of a switching element (1). The current source offers a forward current to the temperature-detecting circuit (4). The amplifying circuit amplifies the forward voltage of the temperature-detecting circuit (4). The current-adjusting circuit adjusts the intensity of a gate current of the switching element (1) based on the output voltage of the amplifying circuit (9). The driving circuit receives an external signal and turns the switching element (1) on and off. The intensity of the gate current is adjusted based on a change in the intensity of the forward voltage which is in accordance with the temperature change of the temperature-detecting circuit (4), the gate current flowing from a current-adjusting circuit (12) to the gate electrode of the switching element (1). |
