Patent ID: 6424187
Filing Date: 2002-07-23
Classification: H03K

Abstract:
A driving apparatus for a MOS transistor comprising:a diode connected in parallel to a winding which is connected in series with a battery; a MOS transistor connected between said winding and said battery; a driving circuit which generates signals for turning on and off said MOS transistor to drive a gate of said MOS transistor; and a delay circuit which is disposed between said driving circuit and said MOS transistor and delays said signal generated from said driving circuit for changing said MOS transistor from a turned-off state to a turned-on state by increasing drain current of the MOS transistor in a ramp-shaped manner so that said MOS transistor is shifted from a completely turned-off state to a completely turned-on state wit h a predetermined time period longer than a reverse recovery time of said diode.