Patents Assigned to RICHTEK TECHNOLOGY CORPORATIION
  • Brushless DC electric (BLDC) motor driver circuit
    Patent number: 11843344
    Abstract: A brushless DC electric (BLDC) motor driver circuit includes: a power stage circuit configured to operably drive a brushless DC electric (BLDC) motor according to a pulse width modulation (PWM) signal; and an abnormality diagnosis circuit, wherein when a first parameter is under control, the abnormality diagnosis circuit is configured to operably determine a rotation abnormality condition of the BLDC motor according to a second parameter; wherein the first parameter and the second parameter are correlated with the rotation of the BLDC motor.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: December 12, 2023
    Assignee: RICHTEK TECHNOLOGY CORPORATIION
    Inventor: Wei-Hsu Chang