Patents by Inventor Daniel Lourenco dos Santos

Daniel Lourenco dos Santos 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).

  • DC-DC converter
    Patent number: 8570015
    Abstract: A dual-mode switching voltage regulator has a duty cycle that varies with the input and output voltages so as to dynamically compensate for changes in the operating conditions. The switching voltage regulator uses input and output voltages/currents to optimize the duty cycle of the signals applied to a pair of switches disposed in the regulator. In the PFM mode, a control block senses the time that a first switch used to discharge an inductor is turned off. If the control block senses that the first switch is opened too early, the control block increases the on-time of a second switch used to charge the inductor. If the control block senses that the first switch is opened too late, the control block decreases the on-time of the second switch.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: October 29, 2013
    Assignee: Synopsys, Inc.
    Inventors: Floriberto Amorim Azevedo Lima, Pedro Faria de Oliveira, Daniel Lourenco dos Santos
  • DC-DC Converter
    Publication number: 20120019224
    Abstract: A dual-mode switching voltage regulator has a duty cycle that varies with the input and output voltages so as to dynamically compensate for changes in the operating conditions. The switching voltage regulator uses input and output voltages/currents to optimize the duty cycle of the signals applied to a pair of switches disposed in the regulator. In the PFM mode, a control block senses the time that a first switch used to discharge an inductor is turned off. If the control block senses that the first switch is opened too early, the control block increases the on-time of a second switch used to charge the inductor. If the control block senses that the first switch is opened too late, the control block decreases the on-time of the second switch.
    Type: Application
    Filed: October 3, 2011
    Publication date: January 26, 2012
    Applicant: Synopsys. Inc.
    Inventors: Floriberto Amorim Azevedo Lima, Pedro Faria de Oliveira, Daniel Lourenco dos Santos
  • DC-DC converter
    Patent number: 8030910
    Abstract: A dual-mode switching voltage regulator has a duty cycle that varies with the input and output voltages so as to dynamically compensate for changes in the operating conditions. The switching voltage regulator uses input and output voltages/currents to optimize the duty cycle of the signals applied to a pair of switches disposed in the regulator. In the PFM mode, a control block senses the time that a first switch used to discharge an inductor is turned off. If the control block senses that the first switch is opened too early, the control block increases the on-time of a second switch used to charge the inductor. If the control block senses that the first switch is opened too late, the control block decreases the on-time of the second switch.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: October 4, 2011
    Assignee: Synopsys, Inc.
    Inventors: Floriberto Amorim Azevedo Lima, Pedro Faria de Oliveira, Daniel Lourenco dos Santos
  • DC-DC CONVERTER
    Publication number: 20090174379
    Abstract: A dual-mode switching voltage regulator has a duty cycle that varies with the input and output voltages so as to dynamically compensate for changes in the operating conditions. The switching voltage regulator uses input and output voltages/currents to optimize the duty cycle of the signals applied to a pair of switches disposed in the regulator. In the PFM mode, a control block senses the time that a first switch used to discharge an inductor is turned off. If the control block senses that the first switch is opened too early, the control block increases the on-time of a second switch used to charge the inductor. If the control block senses that the first switch is opened too late, the control block decreases the on-time of the second switch.
    Type: Application
    Filed: March 27, 2008
    Publication date: July 9, 2009
    Applicant: MIPSABG Chipidea Lda.
    Inventors: Floriberto Amorim Azevedo Lima, Pedro Faria de Oliveira, Daniel Lourenco dos Santos