Patents by Inventor Brian Patrick Johnson

Brian Patrick Johnson 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: 7602163
    Abstract: An information handling system includes a power converter having a first switched inductor to supply current to a load. A second switched inductor is inductively coupled to the first switched inductor. A control circuit activates the second switched inductor in response to a change in the power requirements of the load, so as to remove energy stored in the first switched inductor and thereby regulate the output voltage of the power converter when load current is stepped downwards.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: October 13, 2009
    Assignee: Dell Products L.P.
    Inventors: Brian Patrick Johnson, Daniel E. Jenkins
  • Patent number: 7508178
    Abstract: For controlling a direct current to direct current (DC-DC) converter, a controller individually switches a charge switch and a discharge switch to control a duty cycle, thereby providing a regulated DC output. A delay in switching each one of the charge and discharge switches results in a formation of a DC error in the regulated DC output. The controller adjusts the duty cycle by adding a delay compensation to substantially eliminate the DC error. The delay compensation substantially eliminates the DC error by decreasing an average value of the regulated DC output to offset an increase in the average value of the regulated DC output without the delay compensation.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: March 24, 2009
    Assignee: Dell Products L.P.
    Inventors: Brent A. McDonald, Brian Patrick Johnson
  • Patent number: 7408328
    Abstract: An information handling system (“IHS”) includes a system board and a power supply unit coupled to the system board. The power supply unit includes a switching power regulator. The switching power regulator includes an inductor coupled to an output, a capacitor coupled to the inductor, a switch, coupled to the inductor, for regulating power supplied by the power supply unit in response to a duty cycle, and a control circuit, coupled to the switch, for supplying current to the inductor while the switch is closed and charging the capacitor while the switch is open.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: August 5, 2008
    Assignee: Dell Products L.P.
    Inventors: Brian Patrick Johnson, Brent Alan McDonald
  • Patent number: 7358707
    Abstract: An information handling system (IHS) includes a system board and a power supply unit, coupled to the system board. The power supply unit includes a power converter for supplying power to a first output and a second output, a switch, coupled to the power converter, for regulating power supplied to the first and the second outputs in response to a duty cycle, and a control circuit, coupled to the switch, for receiving an indication of current level at the second output and in response to the indication of current level at the second output, adjusting the duty cycle.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: April 15, 2008
    Assignee: Dell Products L.P.
    Inventors: Brian Patrick Johnson, Brent Alan McDonald