OVER CURRENT PREVENTION CIRCUIT FOR THE DRIVING SYSTEM

摘要

a feedback circuit(301) for converting current flowing to a driver of the driving system through a load into corresponding voltage value, thereby feeding back it; a comparator?(302) for outputting a signal which is activated when the voltage fedback through the feedback circuit is higher than a predetermined allowable voltage; an input signal cutting off circuit, connected between the input terminal of the driver and ground, and suspending operation of the driver by cutting off the current applied to the driver when the output signal of the comparator is activated; and a over current preventive circuit for generating a signal which is activated when the temperature is higher than a predetermined degree.