Patents by Inventor Mohammad Masoumi

Mohammad Masoumi 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).

  • In-rush current controller for a semiconductor switch
    Patent number: 9933807
    Abstract: An in-rush current controller to turn-on a semiconductor output switch is described. The output switch is arranged in series with an output capacitor. The switch comprises a switch control port for controlling an output current and an output voltage. The controller comprises an amplifier to source or sink a switch control current to or from the switch control port, wherein the switch control current is dependent on an amplifier control current at an amplifier control port. The controller comprises a reference current source to provide a reference current at the amplifier control port, subject to a control signal indicating that the output switch is to be turned on. Furthermore, the controller comprises a feedback capacitor to provide a feedback current at the amplifier control port in dependence of a variation of the output voltage.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: April 3, 2018
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Mohammad Masoumi, Frank Kronmueller, Robert Prinz
  • Slew Rate and In-Rush Current Controller
    Publication number: 20160252924
    Abstract: An in-rush current controller to turn-on a semiconductor output switch is described. The output switch is arranged in series with an output capacitor. The switch comprises a switch control port for controlling an output current and an output voltage. The controller comprises an amplifier to source or sink a switch control current to or from the switch control port. The switch control current is dependent on an amplifier control current at an amplifier control port. The controller comprises a reference current source to provide a reference current at the amplifier control port, subject to a control signal indicating that the output switch is to be turned on. The controller comprises a feedback capacitor which is arranged to couple the output node to the amplifier control port, and to provide a feedback current at the amplifier control port in dependence of a variation of the output voltage.
    Type: Application
    Filed: August 24, 2015
    Publication date: September 1, 2016
    Inventors: Mohammad Masoumi, Frank Kronmueller, Robert Prinz