Patents by Inventor Alexander Lee McHale

Alexander Lee McHale 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 charger system having a charge pump power stage
    Patent number: 11641126
    Abstract: A system for charging a battery includes an adapter, and a charger coupled to receive power from the adapter, and to provide a charging current to the battery. The charger includes a power stage with a charge pump to provide the charging current, and a feedback circuit to provide a feedback signal to the adapter. The power stage can be one of: an adjustable current source with voltage clamp, and an adjustable voltage source with current clamp. The charge pump can be implemented as a voltage divider, so that an input adapter current is multiplied by a pre-defined divider ratio to provide the charging current. The charge pump can be one of: single-phase; and multi-phase.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: May 2, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Zheren Lai, Jinrong Qian, Sai Bun Wong, Ryan Erik Lind, Alexander Lee McHale
  • BATTERY CHARGER SYSTEM
    Publication number: 20200266634
    Abstract: A system for charging a battery includes an adapter, and a charger coupled to receive power from the adapter, and to provide a charging current to the battery. The charger includes a power stage with a charge pump to provide the charging current, and a feedback circuit to provide a feedback signal to the adapter. The power stage can be one of: an adjustable current source with voltage clamp, and an adjustable voltage source with current clamp. The charge pump can be implemented as a voltage divider, so that an input adapter current is multiplied by a pre-defined divider ratio to provide the charging current. The charge pump can be one of: single-phase; and multi-phase.
    Type: Application
    Filed: July 18, 2018
    Publication date: August 20, 2020
    Inventors: Zheren Lai, Jinrong Qian, Sai Bun Wong, Ryan Erik Lind, Alexander Lee McHale
  • BATTERY CHARGER SYSTEM
    Publication number: 20190115765
    Abstract: A system for charging a battery includes an adapter, and a charger coupled to receive power from the adapter, and to provide a charging current to the battery. The charger includes a power stage with a charge pump to provide the charging current, and a feedback circuit to provide a feedback signal to the adapter. The power stage can be one of: an adjustable current source with voltage clamp, and an adjustable voltage source with current clamp. The charge pump can be implemented as a voltage divider, so that an input adapter current is multiplied by a pre-defined divider ratio to provide the charging current. The charge pump can be one of: single-phase; and multi-phase.
    Type: Application
    Filed: July 18, 2018
    Publication date: April 18, 2019
    Inventors: Zheren Lai, Jinrong Qian, Sai Bun Wong, Ryan Erik Lind, Alexander Lee McHale