| 摘要 |
PURPOSE: A step motor control circuit for driving a solenoid in an electronic controlled suspension of a vehicle is provided to prevent burning of a driving end or output of errors in applying two driving signals simultaneously by restricting two driving control signals from being transmitted to a solenoid driving unit at abnormal state of the input signal processing unit. CONSTITUTION: A step motor control circuit for driving a solenoid is composed of an input signal processing unit(104) outputting a three-terminal driving control signal for driving a step motor; a solenoid driving unit(108) connected to three terminals of the step motor to control the step motor by forming the closed loop between driving terminals and the step motor; and a driving detection and output unit(106) forming the closed loop between the driving terminal and the step motor by applying a transistor turn-on signal to a transistor array with receiving the driving control signal from the input signal processing unit, and transmitting the single driving control signal to the solenoid driving unit through logical operation in inputting two driving control signals simultaneously at the abnormal state of the input signal processing unit.
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