| 摘要 |
A gate drive circuit includes an output transistor which supplies a constant current to the gate of a switching element and drives the switching element on; a pre-driver of a CMOS configuration, formed of a p-channel MOS-FET and n-channel MOS-FET, to which a gate control signal is inputted and which drives the output transistor on/off; a reference current source which controls the gate voltage of a constant current transistor and makes constant a current flowing through the constant current transistor; and a buffer amplifier which applies the gate voltage of the constant current transistor as the operating reference voltage of the pre-driver. |
