Patents by Inventor Qinghung (Michelle) Lee

Qinghung (Michelle) Lee 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).

  • Battery charging system including current observer circuitry to avoid battery voltage overshoot based on battery current draw
    Patent number: 9882408
    Abstract: According to one aspect of the present disclosure, there is provided a battery charging system. The battery charging system includes battery charging circuitry configured to provide charging current to a battery. The battery charging system further includes feedback circuitry configured to generate a feedback signal indicative of a battery charging condition, wherein the battery charging system is configured to control the battery charging current based on, at least in part, the feedback signal. The battery charging system further includes feed forward circuitry configured to adjust the feedback signal to decrease battery charging current when a decrease in battery current draw exceeds a threshold, and wherein the feed forward circuitry is configured to decrease the battery charging current faster than the feedback circuitry.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: January 30, 2018
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rendon Holloway, Qinghung (Michelle) Lee, Jonathan Klein
  • BATTERY CHARGING SYSTEM INCLUDING CURRENT OBSERVER CIRCUITRY TO AVOID BATTERY VOLTAGE OVERSHOOT BASED ON BATTERY CURRENT DRAW
    Publication number: 20160181834
    Abstract: According to one aspect of the present disclosure, there is provided a battery charging system. The battery charging system includes battery charging circuitry configured to provide charging current to a battery. The battery charging system further includes feedback circuitry configured to generate a feedback signal indicative of a battery charging condition, wherein the battery charging system is configured to control the battery charging current based on, at least in part, the feedback signal. The battery charging system further includes feed forward circuitry configured to adjust the feedback signal to decrease battery charging current when a decrease in battery current draw exceeds a threshold, and wherein the feed forward circuitry is configured to decrease the battery charging current faster than the feedback circuitry.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 23, 2016
    Applicant: Fairchild Semiconductor Corporation
    Inventors: Rendon Holloway, Qinghung (Michelle) Lee, Jonathan Klein
  • Battery charging system including current observer circuitry to avoid battery voltage overshoot based on battery current draw
    Patent number: 9287731
    Abstract: According to one aspect of the present disclosure, there is provided a battery charging system. The battery charging system includes battery charging circuitry configured to provide charging current to a battery. The battery charging system further includes feedback circuitry configured to generate a feedback signal indicative of a battery charging condition, wherein the battery charging system is configured to control the battery charging current based on, at least in part, the feedback signal. The battery charging system further includes feed forward circuitry configured to adjust the feedback signal to decrease battery charging current when a decrease in battery current draw exceeds a threshold, and wherein the feed forward circuitry is configured to decrease the battery charging current faster than the feedback circuitry.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 15, 2016
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rendon Holloway, Qinghung (Michelle) Lee, Jonathan Klein