Patents by Inventor Karen Huimun Chan

Karen Huimun Chan 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).

  • Patent number: 11777406
    Abstract: Multiphase switched mode power supply clock apparatus, systems, articles of manufacture, and related methods are disclosed. An example apparatus includes a first clock recovery circuit to in response to obtaining a first clock pulse, transmit the first clock pulse to a power converter to cause the power converter to switch based on the first clock pulse, in response to obtaining a second clock pulse after the first clock pulse re-transmit the second clock pulse to a second clock recovery circuit, and increment a count value, and in response to the count value meeting a phase selection value, reset the count value.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: October 3, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Tawen Mei, Karen Huimun Chan
  • Publication number: 20220131465
    Abstract: Multiphase switched mode power supply clock apparatus, systems, articles of manufacture, and related methods are disclosed. An example apparatus includes a first clock recovery circuit to in response to obtaining a first clock pulse, transmit the first clock pulse to a power converter to cause the power converter to switch based on the first clock pulse, in response to obtaining a second clock pulse after the first clock pulse re-transmit the second clock pulse to a second clock recovery circuit, and increment a count value, and in response to the count value meeting a phase selection value, reset the count value.
    Type: Application
    Filed: January 10, 2022
    Publication date: April 28, 2022
    Inventors: Tawen Mei, Karen Huimun Chan
  • Patent number: 11251706
    Abstract: Multiphase switched mode power supply clock apparatus, systems, articles of manufacture, and related methods are disclosed. An example apparatus includes a first clock recovery circuit to in response to obtaining a first clock pulse, transmit the first clock pulse to a power converter to cause the power converter to switch based on the first clock pulse, in response to obtaining a second clock pulse after the first clock pulse re-transmit the second clock pulse to a second clock recovery circuit, and increment a count value, and in response to the count value meeting a phase selection value, reset the count value.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: February 15, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Tawen Mei, Karen Huimun Chan
  • Publication number: 20200366203
    Abstract: Multiphase switched mode power supply clock apparatus, systems, articles of manufacture, and related methods are disclosed. An example apparatus includes a first clock recovery circuit to in response to obtaining a first clock pulse, transmit the first clock pulse to a power converter to cause the power converter to switch based on the first clock pulse, in response to obtaining a second clock pulse after the first clock pulse re-transmit the second clock pulse to a second clock recovery circuit, and increment a count value, and in response to the count value meeting a phase selection value, reset the count value.
    Type: Application
    Filed: May 15, 2019
    Publication date: November 19, 2020
    Inventors: Tawen Mei, Karen Huimun Chan
  • Patent number: 10511226
    Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to regulate a switched mode power supply. An example power converter includes a first comparator, a ramp generator coupled to a first input of the first comparator, and a current balance circuit coupled to the ramp generator, the current balance circuit including a transistor including a first current terminal, a second current terminal, and a gate, a multiplier circuit coupled to the first current terminal, a second comparator coupled to the gate, a first current source coupled to the first current terminal and the multiplier circuit, and a second current source coupled to the second current terminal and the second comparator.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: December 17, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Sanjay Gurlahosur, Karen Huimun Chan