Patents by Inventor Mark Emerson Grandy

Mark Emerson Grandy 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).

  • RF noise reduction in switching mode power supplies
    Patent number: 9876422
    Abstract: A switching mode power supply generating reduced high frequency noise. The power supply includes a solid state switch, a modulator for driving the solid state switch with a periodic pulse drive signal, an output filter at the output of the solid state switch, where the output filter includes an inductor and a catch diode. A damping element is included for damping current spikes through the catch diode when said solid state switch turns on and thus reduce noise pulses that would otherwise be introduced by the current spikes.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: January 23, 2018
    Assignee: TRW Automotive U.S. LLC
    Inventor: Mark Emerson Grandy
  • Switching mode power supply with spread spectrum oscillator
    Patent number: 9520780
    Abstract: Apparatus for use in a system, including a microcontroller for controlling the system, where the microcontroller includes at least one internal module capable of generating a periodic pulse signal. The microcontroller is programmed and operated so that the internal module generates a periodic pulse signal that is a pseudo-random spread spectrum oscillator signal. A switching mode power supply is responsive to the pseudo-random spread spectrum oscillator signal. The switching mode power supply comprises a solid state switch and a modulator for driving the solid state switch with a drive signal related to the periodic pulse signal generated by the internal module of the microcontroller.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: December 13, 2016
    Assignee: TRW Automotive U.S. LLC
    Inventors: Mark Emerson Grandy, Jonathan Joseph Kuhn, Christopher Nelson St. John
  • RF NOISE REDUCTION IN SWITCHING MODE POWER SUPPLIES
    Publication number: 20150236585
    Abstract: A switching mode power supply generating reduced high frequency noise. The power supply includes a solid state switch, a modulator for driving the solid state switch with a periodic pulse drive signal, an output filter at the output of the solid state switch, where the output filter includes an inductor and a catch diode. A damping element is included for damping current spikes through the catch diode when said solid state switch turns on and thus reduce noise pulses that would otherwise be introduced by the current spikes.
    Type: Application
    Filed: February 17, 2014
    Publication date: August 20, 2015
    Inventor: Mark Emerson Grandy
  • SWITCHING MODE POWER SUPPLY WITH SPREAD SPECTRUM OSCILLATOR
    Publication number: 20150232029
    Abstract: Apparatus for use in a system, including a microcontroller for controlling the system, where the microcontroller includes at least one internal module capable of generating a periodic pulse signal. The microcontroller is programmed and operated so that the internal module generates a periodic pulse signal that is a pseudo-random spread spectrum oscillator signal. A switching mode power supply is responsive to the pseudo-random spread spectrum oscillator signal. The switching mode power supply comprises a solid state switch and a modulator for driving the solid state switch with a drive signal related to the periodic pulse signal generated by the internal module of the microcontroller.
    Type: Application
    Filed: February 17, 2014
    Publication date: August 20, 2015
    Inventors: Mark Emerson Grandy, Jonathan Joseph Kuhn, Christopher Nelson St. John