Patents by Inventor Matthias Doppel

Matthias Doppel 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).

  • Method and system of providing overload and short-circuit protection for switched mode power supply
    Patent number: 8050006
    Abstract: A method of providing overload and short-circuit protection for a Switched Mode Power Supply (SMPS). The method may rely upon sensing a temperature change rate for a component of the SMPS and implementing a protection scheme when the temperature change rate exceeds a desired temperature change rate. The implementation scheme may include permanently or temporarily shutting-off the component.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: November 1, 2011
    Assignee: Lear Corporation GmbH
    Inventors: Matthias Doppel, Gunther Grabner
  • AUDIO AMPLIFIER AND TECHNIQUE FOR POWER EFFICIENCY THEREOF
    Publication number: 20090274321
    Abstract: Some embodiments take the form of a vehicle audio amplifier comprising a plurality of amplifier stages and a controller. The amplifier stages are operatively coupled to each other and the amplifier stages include an input stage for receiving an audio signal and an output stage for driving at least one load in response to a supply voltage level. The controller is operatively coupled to the amplifier stages and configured to receive a volume signal that is indicative of a desired volume setting selected by a user. The controller is further configured to adjust the supply voltage level to the output stage to a first voltage level if the volume signal is less than a predetermined volume level. The controller is further configured to adjust the supply voltage level to the output stage to a second voltage level if the volume signal is greater than the predetermined volume level.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: LEAR CORPORATION
    Inventor: Matthias Doppel
  • METHOD AND SYSTEM OF PROVIDING OVERLOAD AND SHORT-CIRCUIT PROTECTION FOR SWITCHED MODE POWER SUPPLY
    Publication number: 20090168274
    Abstract: A method of providing overload and short-circuit protection for a Switched Mode Power Supply (SMPS). The method may rely upon sensing a temperature change rate for a component of the SMPS and implementing a protection scheme when the temperature change rate exceeds a desired temperature change rate. The implementation scheme may include permanently or temporarily shutting-off the component.
    Type: Application
    Filed: December 18, 2008
    Publication date: July 2, 2009
    Applicant: LEAR CORPORATION GMBH
    Inventors: Matthias Doppel, Gunther Grabner