3 Fault correction circuit of 3-phase brushless DC motor

摘要

The malfunction correction circuit of a three-phase BLDC motor according to the present invention includes a circuit code conversion unit for receiving an output signal of a hall element provided in the three-phase BLDC motor and converting it into another code which is preset; A multiplexer configured to receive an output signal of the circuit code converter and an output signal of the hall element and output a signal for driving the motor; A logic circuit unit configured to output a low or high level signal set according to an output signal of the hall element; And a latch unit configured to receive an output signal of the logic circuit unit and output a selection control signal corresponding thereto to the multiplexer.;According to the present invention, since the problem code generated during the initial start-up of the three-phase BLDC motor is converted into a normal code, it is possible to prevent malfunctions generated during the initial start-up without adding a separate circuit element or component. have.