Patents Assigned to R2 Semiconductor
  • Patent number: 9991782
    Abstract: Methods, systems and apparatuses for voltage regulation are disclosed. For an embodiment, a voltage regulator includes a power source block configured to convert an input voltage to an output voltage to supply current to an output load, a storage capacitor, and an active filter configured to transfer energy between the output load and the storage capacitor. A conversion ratio of the active filter is controlled by a parameter related to the output voltage, and a conversion ratio of the power source block is at least partially controlled by a parameter related to the voltage on the storage capacitor.
    Type: Grant
    Filed: June 18, 2017
    Date of Patent: June 5, 2018
    Assignee: R2 Semiconductor
    Inventors: Edward Paul Coleman, Eric Bernard Rodal, Jonathan Audy, David Fisher
  • Patent number: 9035625
    Abstract: Embodiments for at least one method and apparatus of generating a regulated voltage are disclosed. One method includes generating the regulated voltage through controlled closing and opening of a series switch element and shunt switch element. This method includes closing the series switch element during a first period, the series switch element comprising a plurality of series switch elements segments. The method includes applying a switching gate voltage to gates of series switching transistors of a subset of the plurality of series switch elements segments of the series switch element, wherein only the series switching transistors of the subset of the plurality of series switch elements segments of the series switch element turn on, while series protection transistor of more than the subset of the plurality of series switch elements segments of the series switch element turn on. The shunt switch element during is closed during a second period.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: May 19, 2015
    Assignee: R2 Semiconductor
    Inventors: Lawrence M. Burns, James E. C. Brown
  • Patent number: 8508207
    Abstract: Embodiments for methods and apparatuses for controlling a skew time of switches of a switching voltage regulator are disclosed. One method includes generating a switching voltage through closing and opening of a series switch and a shunt switch as controlled by a series switch control signal and a shunt switch control signal. An error signal is generated that is proportional to a relative displacement of an on-interval of the series switch and an off-interval of the shunt switch. A relative delay of the series switch control signal and the shunt switch control signal is adjusted based on the error signal, and a regulated output voltage is generated based upon the switching voltage.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: August 13, 2013
    Assignee: R2 Semiconductor
    Inventors: Lawrence M. Burns, James E. C. Brown