Patents by Inventor Tufan Karalar

Tufan Karalar 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).

  • Soft shutdown for isolated drivers
    Patent number: 9698654
    Abstract: An apparatus for controlling a high-power drive device external to a package of a motor drive circuit includes a motor drive circuit. The motor drive circuit includes a driver to control the high-power drive device based on a first reference voltage, a second reference voltage, and a control signal based on a received control signal. A fault circuit generates a failure indicator based on a voltage across terminals of the high-power drive device. A fault condition is based on the failure indicator. A first terminal coupled to the driver charges a node of the high-power drive device over a first length of time in response to an absence of the fault condition and a first level of the control signal. A second terminal coupled to the driver discharges the node over a second length of time different from the first length of time.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 4, 2017
    Assignee: Silicon Laboratories Inc.
    Inventors: Paulo Santos, Tufan Karalar, Michael J. Mills, Ross Sabolcik, Rudye McGlothlin, Michael L. Duffy, András Vince Horvath
  • Initializing a ring counter
    Patent number: 9680478
    Abstract: A technique includes driving a node of a stage of a ring counter to a predetermined signal state; and clocking the ring counter to cause the signal state to propagate to at least one additional stage of the ring counter to initialize the ring counter with a reset sequence.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 13, 2017
    Assignee: Silicon Laboratories Inc.
    Inventors: Tufan Karalar, David Huitse Shen
  • SOFT SHUTDOWN FOR ISOLATED DRIVERS
    Publication number: 20150085403
    Abstract: An apparatus for controlling a high-power drive device external to a package of a motor drive circuit includes a motor drive circuit. The motor drive circuit includes a driver to control the high-power drive device based on a first reference voltage, a second reference voltage, and a control signal based on a received control signal. A fault circuit generates a failure indicator based on a voltage across terminals of the high-power drive device. A fault condition is based on the failure indicator. A first terminal coupled to the driver charges a node of the high-power drive device over a first length of time in response to an absence of the fault condition and a first level of the control signal. A second terminal coupled to the driver discharges the node over a second length of time different from the first length of time.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Inventors: Paulo Santos, Tufan Karalar, Michael J. Mills, Ross Sabolcik, Rudye McGlothlin, Michael L. Duffy, András Vince Horvath
  • Initializing A Ring Counter
    Publication number: 20130077734
    Abstract: A technique includes driving a node of a stage of a ring counter to a predetermined signal state; and clocking the ring counter to cause the signal state to propagate to at least one additional stage of the ring counter to initialize the ring counter with a reset sequence.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Inventors: Tufan Karalar, David Huitse Shen