BRUSHLESS D.C. MOTOR CONTROL CIRCUIT

摘要

a micro computer(2) for comprising a first output port generating sequential pulse signal in a switching means, a second output port(O1-O8) for outputting a digital signal for pulse width modulating signal and a third output port(O) for sending pulse to generate triangular signal; a digital-analog converter(3); an integration circuit(5) for generating triangular signal; a comparator(4) for comparing converted analog signal with an integrated triangular signal; and an output(Vc2) of the comparator(4) is connected for turn-off control of the switching means.