| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic device that suppresses resonance and reduces a loss due to a resistor connected between an on-driving circuit and a control terminal of a switching element.SOLUTION: An IGBT 110 comprises low current capacity IGBTs 110a, 110b connected in parallel. A control device 12 has diodes 122, 123 between an on-driving circuit 121 and gates of the low current capacity IGBTs 110a, 110b. The on-driving circuit 121 feeds a constant current into the gates of the low current capacity IGBTs 110a, 110b via the diodes 122, 123. The diodes 122, 123 can limit the flow of current to one direction. This suppresses a current flowing in a closed circuit to suppress resonance. When the on-driving circuit 121 feeds the constant current into the gates of the low current capacity IGBTs 110a, 110b, a terminal voltage thereof is a forward voltage, which is very low. This can reduce a loss more than an existing case of a resistor.</p> |
