Patent ID: 9729089
Date: 2017-08-08
CPC Classifications: H02P

Claim:
1. An integrated circuit (IC) comprising: a time segment generator that produces binary output from a divided position signal of a brushless direct current motor; and a pulse width modulation generator including a correction section that stores correction factors for binary output produced by said time segment generator, a digital to analog converter, an oscillator, and a comparator, wherein the correction section includes a factor table to receive the binary output from the time segment generator and provide a binary correction factor to correct a motor current corresponding to each time segment of a motor control signal; a digital to analog converter to convert the binary correction factor corresponding to each time segment of the motor control signal into time varying position dependent analog voltages; and a comparator to compare the time varying position dependent analog voltages against an oscillating triangle wave to generate a position corrected pulse width modulated motor command signal.