Patent ID: 9685892
Date: 2017-06-20
CPC Classifications: H02M,H02P

Claim:
1. A brushless motor control device for controlling and driving of a brushless motor so that the brushless motor rotates according to an external command, the brushless motor control device comprising: a drive controller for generating a driving signal for driving the brushless motor; a plurality of current detection circuits each detecting a current value in each of phases of the brushless motor; a plurality of AD converter circuits each connected to a different one of the current detection circuits each for a different one of the phases; a clock generation circuit for outputting a clock pulse serving as a reference operational period; a pulse output circuit for outputting a pulse signal based on the clock pulse; and an RC filter for inputting the pulse signal, wherein the RC filter is formed of a resistor and a capacitor connected in series, a pull-up resistor connecting to a predetermined power supply is connected to an intermediate connection point between the resistor and the capacitor, and the intermediate connection point is connected to the plurality of AD converter circuits.