Patents by Inventor Darren T. Schindel

Darren T. Schindel 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).

  • High-side current sense hysteretic LED controller
    Patent number: 7705547
    Abstract: Systems and methods for hysteretically controlling Light Emitting Diodes (LEDs) when the input voltage is greater than or equal to 18 volts. An example system includes one or more LEDs and a circuit electrically coupled to the one or more LEDs. The circuit hysteretically controls an input voltage supplied to the one or more LEDs based on a sensed electric current that passes through the LEDs. The circuit includes a MOSFET switch for switching on and off the input voltage supplied to the one or more LEDs, a current sensing subcircuit including a first integrated circuit (IC) for sensing the current flowing through the one or more LEDs, a hysteretic comparator circuit including a second IC for generating a hysteretic control signal based on the sensed current, and a switch driver including a third IC for controlling operation of the switch based on the generated hysteretic control signal.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: April 27, 2010
    Assignee: Honeywell International Inc.
    Inventors: Darren T. Schindel, Leonard De Oto
  • HIGH-SIDE CURRENT SENSE HYSTERETIC LED CONTROLLER
    Publication number: 20080106217
    Abstract: Systems and methods for hysteretically controlling Light Emitting Diodes (LEDs) when the input voltage is greater than or equal to 18 volts. An example system includes one or more LEDs and a circuit electrically coupled to the one or more LEDs. The circuit hysteretically controls an input voltage supplied to the one or more LEDs based on a sensed electric current that passes through the LEDs. The circuit includes a MOSFET switch for switching on and off the input voltage supplied to the one or more LEDs, a current sensing subcircuit including a first integrated circuit (IC) for sensing the current flowing through the one or more LEDs, a hysteretic comparator circuit including a second IC for generating a hysteretic control signal based on the sensed current, and a switch driver including a third IC for controlling operation of the switch based on the generated hysteretic control signal.
    Type: Application
    Filed: October 19, 2006
    Publication date: May 8, 2008
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Darren T. Schindel, Leonard De Oto