Patent ID: 6390064
Filing Date: 2002-05-21
Classification: F02D

Abstract:
A semiconductor device used for an electronic throttle valve control apparatus of an internal combustion engine, comprising:a pair of throttle opening signal input terminals receiving a pair of throttle valve opening signals from a throttle opening sensor device detecting opening angle of said throttle valve; a control output terminal outputting a current command value for adjusting a current flowing in a motor which drives said throttle valve; a pair of output terminals outputting a signal indicative of forward or backward rotation of said motor by changing a current direction of said motor; a current signal input terminal receiving a signal from a sensor which detects the current flowing in said motor; a target opening signal input terminal receiving a signal indicative of a target opening of said throttle valve; and a microcomputer calculating control signals outputted from said output terminals on the basis of the signals inputted to said input terminals, wherein one of said throttle opening signal input terminals is connected to said microcomputer via an amplifier and the other one of said throttle opening signal input terminals is connected to said microcomputer.