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  • Publication number: 20120105045
    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: Application
    Filed: April 19, 2011
    Publication date: May 3, 2012
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: Lawrence M. Burns, James E.C. Brown
  • Publication number: 20110312287
    Abstract: Embodiments for at least one method and apparatus of a wireless transceiver are disclosed. For one embodiment, the wireless transceiver includes a transmit chain, wherein the transmit chain includes a power amplifier. The wireless transceiver additionally includes a receiver chain that is tunable to receive wireless signals over at least one of multiple channels, wherein the multiple channels are predefined. Further, the wireless transceiver includes a voltage converter. The voltage converter provides a supply voltage to the power amplifier, and operates at a single switching frequency, wherein the single switching frequency and all harmonics of the single switching frequency fall outside of the multiple channels.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 22, 2011
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: Ravi Ramachandran, Frank Sasselli
  • Publication number: 20130267187
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One apparatus includes a switching voltage regulator, wherein the switching voltage regulator includes a series switch element, a shunt switch element, a switching controller and a switched output filter. The switching controller is configured to generate a switching voltage through controlled closing and opening of the series switch element and the shunt switch element. The switched output filter filters the switching voltage and generates a regulated output voltage, wherein the switched output filter includes a plurality of capacitors that are selectively included within the switched output filter.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 10, 2013
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: James E.C. Brown, Daniel Dobkin, Pablo Moreno Galbis, Cory Severson, Lawrence M. Burns
  • Publication number: 20140253065
    Abstract: Embodiments of systems, methods and apparatuses of a voltage regulator are disclosed. One apparatus of the voltage regulator includes a series switch element, wherein the series switch element comprises a plurality of partitioned series switch elements, a shunt switch element, and a switching controller. The switching controller is operative to control the series switch element and the shunt switch element in an idle state, wherein none of the plurality of partitioned series switch elements are active, control the series switch element and the shunt switch element in a burst state, wherein N of the plurality of partitioned series switch elements are active, and control the series switch element and the shunt switch element in a transition state, wherein M of the plurality of partitioned series switch elements are active, and wherein M is less than N.
    Type: Application
    Filed: July 21, 2013
    Publication date: September 11, 2014
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: James E. C. Brown, Pablo Moreno Galbis, John O'Boyle, III