Patents by Inventor Yu-Kai Wong

Yu-Kai Wong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Motor control device for achieving safe and efficient braking and motor braking method thereof
    Patent number: 12224695
    Abstract: A motor is coupled to a motor control device including a set of high-side switches, a set of low-side switches, a capacitor and a controller. The set of high-side switches and the set of low-side switches are coupled to the motor. The capacitor is coupled to the set of high-side switches. The controller is coupled to the capacitor, the set of high-side switches and the set of low-side switches. A method of braking the motor includes upon the motor being disconnected from an external power source, the controller receiving a supply voltage from the capacitor, turning on the set of low-side switches, turning off the set of high-side switches, and the controller switching the set of low-side switches according to the supply voltage.
    Type: Grant
    Filed: March 20, 2023
    Date of Patent: February 11, 2025
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Chien-Tsung Hung, Yu-Kai Wong, Meng-Che Tsai
  • MOTOR CONTROL DEVICE FOR ACHIEVING SAFE AND EFFICIENT BRAKING AND MOTOR BRAKING METHOD THEREOF
    Publication number: 20240213895
    Abstract: A motor is coupled to a motor control device including a set of high-side switches, a set of low-side switches, a capacitor and a controller. The set of high-side switches and the set of low-side switches are coupled to the motor. The capacitor is coupled to the set of high-side switches. The controller is coupled to the capacitor, the set of high-side switches and the set of low-side switches. A method of braking the motor includes upon the motor being disconnected from an external power source, the controller receiving a supply voltage from the capacitor, turning on the set of low-side switches, turning off the set of high-side switches, and the controller switching the set of low-side switches according to the supply voltage.
    Type: Application
    Filed: March 20, 2023
    Publication date: June 27, 2024
    Applicant: WELTREND SEMICONDUCTOR INC.
    Inventors: Chien-Tsung Hung, Yu-Kai Wong, Meng-Che Tsai