Patents by Inventor Percy E. Neyra

Percy E. Neyra 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).

  • Systems and methods for multi-mode battery charging
    Patent number: 8004248
    Abstract: Various systems and methods for battery charging are disclosed herein. As just one example, a battery charger is disclosed that includes a current feedback loop that has a pulse width modulated current control output, and a voltage feedback loop that has a pulse width modulated voltage control output. In addition, the battery charger includes a transition circuit with a digital phase/frequency detector. The digital phase/frequency detector is operable to detect a duty cycle difference between the pulse width modulated current control output and the pulse width modulated voltage control output. Further, the transition circuit is operable to transition between application of a substantially current charge control to a charging node to application of a substantially constant voltage to the charging node based at least in part on the difference in duty cycle.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: August 23, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Valerian Mayega, Percy E. Neyra, Brett E. Smith
  • SYSTEMS AND METHODS FOR MULTI-MODE BATTERY CHARGING
    Publication number: 20070278994
    Abstract: Various systems and methods for battery charging are disclosed herein. As just one example, a battery charger is disclosed that includes a current feedback loop that has a pulse width modulated current control output, and a voltage feedback loop that has a pulse width modulated voltage control output. In addition, the battery charger includes a transition circuit with a digital phase/frequency detector. The digital phase/frequency detector is operable to detect a duty cycle difference between the pulse width modulated current control output and the pulse width modulated voltage control output. Further, the transition circuit is operable to transition between application of a substantially current charge control to a charging node to application of a substantially constant voltage to the charging node based at least in part on the difference in duty cycle.
    Type: Application
    Filed: May 14, 2007
    Publication date: December 6, 2007
    Applicant: Texas Instruments Incorporated
    Inventors: Valerian Mayega, Percy E. Neyra, Brett E. Smith