| 摘要 |
An over-current detecting apparatus for a switching element includes a reference power source, a comparator circuit, a current converting element, a first resistor, and a second resistor. The comparator circuit includes a first input terminal that receives a voltage corresponding to a current flowing in the switching element and a second input terminal that receives a reference voltage supplied from the reference power source. The current converting element converts a voltage of a temperature detecting element (4) that detects a temperature of the switching element into a current corresponding to the voltage of the temperature detecting element. The first resistor is connected in series to a reference power supply side of the second input terminal of the comparator circuit. The second resistor is connected in series to a ground side of the second input terminal of the comparator circuit. |
