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  • Assisting an Output Current of a Voltage Converter
    Publication number: 20120293156
    Abstract: Methods, apparatuses and systems for assisting an output current of a voltage converter, are disclosed. One method includes detecting a request for a positive change in an output voltage of the voltage converter, selecting an output current assist value based on the requested positive change in the output voltage, for a predetermined load, and assisting the output current with the selected output assist current.
    Type: Application
    Filed: June 21, 2012
    Publication date: November 22, 2012
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: Pablo Moreno Galbis, James E.C. Brown
  • Assisting an output current of a voltage converter
    Patent number: 8917067
    Abstract: Methods, apparatuses and systems for assisting an output current of a voltage converter, are disclosed. One method includes detecting a request for a positive change in an output voltage of the voltage converter, selecting an output current assist value based on the requested positive change in the output voltage, for a predetermined load, and assisting the output current with the selected output assist current.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: December 23, 2014
    Assignee: R2 Semiconductor, Inc.
    Inventors: Pablo Moreno Galbis, James E. C. Brown
  • Multimode Operation DC-DC Converter
    Publication number: 20120244916
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element. Further, the method includes generating, by a switchable output filter, a regulated output voltage by filtering the switching voltage, wherein the switchable output filter comprises a plurality of capacitors that are selectively included within the switchable output filter.
    Type: Application
    Filed: February 18, 2012
    Publication date: September 27, 2012
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: James E. C. Brown, Daniel Dobkin, Pablo Moreno Galbis, Cory Severson, Lawrence M. Burns
  • Method for Joint Control of a Power Source and Active Filter
    Publication number: 20160211750
    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: Application
    Filed: November 14, 2015
    Publication date: July 21, 2016
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: Edward Paul Coleman, Eric Bernard Rodal, Jonathan Audy, David Fisher
  • Method for Joint Control of a Power Source and Active Filter
    Publication number: 20170310205
    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: Application
    Filed: June 18, 2017
    Publication date: October 26, 2017
    Applicant: R2 Semiconductor, Inc.
    Inventors: Edward Paul Coleman, Eric Bernard Rodal, Jonathan Audy, David Fisher
  • Controlling a Dead Time of a Switching Voltage Regulator
    Publication number: 20120105034
    Abstract: Embodiments for at least one method and apparatus of controlling a dead time of a switching voltage regulator are disclosed. One method includes generating a regulated output voltage based upon a switching voltage. The method included generating the switching voltage through controlled closing and opening of a series switch element and a shunt switch element, wherein the dead time comprises time that both the series switch element and the shunt switch element are open. The duration of the dead time is adjusted based on a rate of change of the switching voltage.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: James E. C. Brown, Lawrence M. Burns
  • Assisting A Load Current of a Switching Voltage Regulator
    Publication number: 20130321076
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element, and generating an output voltage by filtering the switching voltage with an output inductor and a load capacitor. The method further includes generating an assisting current based on a value of current conducted through the output inductor, and assisting the load current by summing the assisting current with the current conducted through the inductor.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 5, 2013
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: Pablo Moreno Galbis, James E.C. Brown
  • Controlling a dead time of a switching voltage regulator
    Patent number: 8395362
    Abstract: Embodiments for at least one method and apparatus of controlling a dead time of a switching voltage regulator are disclosed. One method includes generating a regulated output voltage based upon a switching voltage. The method included generating the switching voltage through controlled closing and opening of a series switch element and a shunt switch element, wherein the dead time comprises time that both the series switch element and the shunt switch element are open. The duration of the dead time is adjusted based on a rate of change of the switching voltage.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 12, 2013
    Assignee: R2 Semiconductor, Inc.
    Inventors: James E. C. Brown, Lawrence M. Burns
  • Control of conversion ratios of a power source block and bidirectional active filter
    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
  • Control of conversion ratios of a power source block and a bidirectional active filter
    Patent number: 9716433
    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: November 14, 2015
    Date of Patent: July 25, 2017
    Assignee: R2 Semiconductor, Inc.
    Inventors: Edward Paul Coleman, Eric Bernard Rodal, Jonathan Audy, David Fisher
  • Controlling a Skew Time of Switches of a Switching Regulator
    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
  • Assisting a load current of a switching voltage regulator
    Patent number: 8994347
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element, and generating an output voltage by filtering the switching voltage with an output inductor and a load capacitor. The method further includes generating an assisting current based on a value of current conducted through the output inductor, and assisting the load current by summing the assisting current with the current conducted through the inductor.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: March 31, 2015
    Assignee: R2 Semiconductor, Inc.
    Inventors: Pablo Moreno Galbis, James E. C. Brown
  • Voltage Regulator Bypass Resistance Control
    Publication number: 20120274297
    Abstract: Embodiments for at least one method and apparatus of controlling a bypass resistance of a voltage regulator are disclosed. One method includes generating a regulated output voltage based upon a switching voltage. The switching voltage is generated through controlled closing and opening of a series switch element and a shunt switch element, the series switch element and the shunt switch element being connected between voltages based on an input voltage. Control of a duty cycle of the switching voltage is provided by sensing and feeding back the regulated output voltage. The bypass resistance is controlled based on an integration of a difference between the duty cycle and a maximum duty cycle.
    Type: Application
    Filed: July 5, 2012
    Publication date: November 1, 2012
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: James E.C. Brown, Bret Rothenberg, Lawrence M. Burns
  • Multimode operation DC-DC converter
    Patent number: 8725218
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element. Further, the method includes generating, by a switchable output filter, a regulated output voltage by filtering the switching voltage, wherein the switchable output filter comprises a plurality of capacitors that are selectively included within the switchable output filter.
    Type: Grant
    Filed: February 18, 2012
    Date of Patent: May 13, 2014
    Assignee: R2 Semiconductor, Inc.
    Inventors: James E. C. Brown, Daniel Dobkin, Pablo Moreno Galbis, Cory Severson, Lawrence M. Burns
  • Controlling a skew time of switches of a switching regulator
    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
  • DECOUPLING CIRCUITS FOR FILTERING A VOLTAGE SUPPLY OF MULTIPLE POWER AMPLIFIERS
    Publication number: 20140009226
    Abstract: Embodiments for at least one method and apparatus of a voltage supply are disclosed. One voltage supply apparatus includes a voltage supply, a plurality of power amplifier (PA) decoupling circuits, and a plurality of power amplifiers. Each PA decoupling circuit is connected to the voltage supply and provides a filtered voltage supply to a corresponding one of the plurality power amplifiers. Each PA decoupling circuit configured to suppress noise of the provided filtered voltage supply below a threshold at one or more selected frequencies, wherein the suppression is provided by the PA decoupling circuit operating in conjunction with at least one other of the plurality of PA decoupling circuits.
    Type: Application
    Filed: November 11, 2012
    Publication date: January 9, 2014
    Applicant: R2 SEMICONDUCTOR, INC.
    Inventors: Cory Severson, Ravi Ramachandran, David Fisher
  • Operating a Voltage Regulator at a Switching Frequency Selected to Reduce Spurious Signals
    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
  • Multimode Operation DC-DC Converter
    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
  • Voltage Regulator Bypass Resistance Control
    Publication number: 20110234187
    Abstract: Embodiments for at least one method and apparatus of controlling a bypass resistance of a voltage regulator are disclosed. One method includes generating a regulated output voltage based upon a switching voltage. The switching voltage is generated through controlled closing and opening of a series switch element and a shunt switch element, the series switch element and the shunt switch element being connected between voltages based on an input voltage. A control of a duty cycle of the switching voltage is provided by sensing and feeding back the regulated output voltage. The bypass resistance is controlled based on a parameter related to the duty cycle, wherein the control of the duty cycle is persistent during the control of the bypass resistance.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 29, 2011
    Applicant: R2 Semiconductor, Inc.
    Inventors: James E. C. Brown, Bret Rothenberg, Lawrence M. Burns
  • Voltage regulator bypass resistance control
    Patent number: 8339115
    Abstract: Embodiments for at least one method and apparatus of controlling a bypass resistance of a voltage regulator are disclosed. One method includes generating a regulated output voltage based upon a switching voltage. The switching voltage is generated through controlled closing and opening of a series switch element and a shunt switch element, the series switch element and the shunt switch element being connected between voltages based on an input voltage. Control of a duty cycle of the switching voltage is provided by sensing and feeding back the regulated output voltage. The bypass resistance is controlled based on an integration of a difference between the duty cycle and a maximum duty cycle.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: December 25, 2012
    Assignee: R2 Semiconductor, Inc.
    Inventors: James E. C. Brown, Bret Rothenberg, Lawrence M. Burns
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