Patents by Inventor Leopoldo Groppi

Leopoldo Groppi 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).

  • Patent number: 9877363
    Abstract: A device for providing regulated current to an electrical load comprising a current controller operable at predetermined intervals (clock cycles) to receive:—i. a desired input reference voltage; and ii. a feedback voltage obtained from an electronic switch; wherein the current controller is operable to compare the feedback voltage with the desired input reference voltage and provide regulated current to the electrical load based on calculation of the switch off time of the electronic switch at each clock cycle; the calculation of the switch off time operable to achieve a continuous-conduction-mode (CCM) for the device under normal operating conditions, is disclosed.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: January 23, 2018
    Assignee: OPULENT ELECTRONICS INTERNATIONAL PTE LTD
    Inventors: Francis Kai Fook Wee, Leopoldo Groppi, Andrea Stona
  • Publication number: 20160338159
    Abstract: A device for providing regulated current to an electrical load comprising a current controller operable at predetermined intervals (clock cycles) to receive:—i. a desired input reference voltage; and ii. a feedback voltage obtained from an electronic switch; wherein the current controller is operable to compare the feedback voltage with the desired input reference voltage and provide regulated current to the electrical load based on calculation of the switch off time of the electronic switch at each clock cycle; the calculation of the switch off time operable to achieve a continuous-conduction-mode (CCM) for the device under normal operating conditions, is disclosed.
    Type: Application
    Filed: February 9, 2015
    Publication date: November 17, 2016
    Applicant: OPULENT ELECTRONICS INTERNATIONAL PTE LTD
    Inventors: FRANCIS KAI FOOK WEE, LEOPOLDO GROPPI, ANDREA STONA
  • Patent number: 9084303
    Abstract: In a device and method for providing electrical current to a Light Emitting diode (LED) via switch mode power converter, at least one Integrated Circuit (IC) is provided and uses a hardware description language; an electronic switch configurable to have a switching time period. An Analog to Digital converter (ADC) is configured to obtain a digitized voltage input. A voltage comparator is configured to obtain a discharge time of an inductive element of the switch mode power converter at each time period. During operation, the IC obtains the digitized voltage input, the discharge time of the inductive element, the desired electrical current, a reference constant, and the switching time period of the electronic switch as inputs and calculates the switch-on time of the electronic switch at each switching time period, so that the switch-on time of the electronic switch regulates the electrical current flowing into the LED.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 14, 2015
    Assignee: Opulent Electronics International Pte. Ltd
    Inventors: Kai Fook Francis Wee, Andrea Stona, Leopoldo Groppi, Kwok Wing Man, Foo Wing Chong
  • Publication number: 20130106304
    Abstract: In a device and method for providing electrical current to a Light Emitting diode (LED) via switch mode power converter, at least one Integrated Circuit (IC) is provided and uses a hardware description language; an electronic switch configurable to have a switching time period. An Analogue to Digital converter (ADC) is configured to obtain a digitized voltage input. A voltage comparator is configured to obtain a discharge time of an inductive element of the switch mode power converter at each time period. During operation, the IC obtains the digitized voltage input, the discharge time of the inductive element, the desired electrical current, a reference constant, and the switching time period of the electronic switch as inputs and calculates the switch-on time of the electronic switch at each switching time period, so that the switch-on time of the electronic switch regulates the electrical current flowing into the LED.
    Type: Application
    Filed: June 4, 2010
    Publication date: May 2, 2013
    Applicant: OPULENT ELECTRONICS INTERNATIONAL PTE LTD
    Inventors: Kai Fook Francis Wee, Andrea Stona, Leopoldo Groppi, Kwok Wing Man, Foo Wing Chong