Patents by Inventor Palaniappan Subbiah

Palaniappan Subbiah 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).

  • Publication number: 20230261494
    Abstract: A Universal Serial Bus (USB)-Power Delivery (PD) integrated circuit (IC) controller is described. The controller includes: a first USB port configured for coupling the USB-PD IC controller to a USB power adaptor; a second port configured for coupling the USB-PD IC controller to a wireless charging station; and logic configured to control a level of a voltage output by the USB power adaptor and to control an output power level of the wireless charging station, wherein an input voltage of the wireless charging station corresponds to the voltage output by the USB power adaptor or is derived from the voltage output by the USB power adaptor. The IC controls both USB-PD and wireless power simultaneously as a system to transmit power and may limit the output power to prevent overload conditions. A corresponding wireless charging system and method of operating the wireless charging system are also described.
    Type: Application
    Filed: February 11, 2022
    Publication date: August 17, 2023
    Inventors: Nicholaus Smith, Kailas Narayana Iyer, Jegannathan Ramanujam, Palaniappan Subbiah
  • Patent number: 11061457
    Abstract: Technology to dynamically share system power among charging ports of a multiport power delivery (PD) system is described. In one embodiment, a multiport PD system includes a master controller associated with a master port, and one or more slave controllers associated with one or more slave ports. The master controller determines a port connection status of a set of multiple ports. The port connection status indicates that multiple devices are connected. The master controller determines a power requirement of each of the devices. The master controller dynamically allocates a system power between each of the ports, independent of a connection sequence of the devices.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: July 13, 2021
    Assignee: Cypress Semiconductor Corporation
    Inventors: Debraj Bhattacharjee, Kailas Iyer, Palaniappan Subbiah, Subramanyam Sankaran, Anshul Gulati, Neel Karkhanis
  • Publication number: 20210208654
    Abstract: Technology to dynamically share system power among charging ports of a multiport power delivery (PD) system is described. In one embodiment, a multiport PD system includes a master controller associated with a master port, and one or more slave controllers associated with one or more slave ports. The master controller determines a port connection status of a set of multiple ports. The port connection status indicates that multiple devices are connected. The master controller determines a power requirement of each of the devices. The master controller dynamically allocates a system power between each of the ports, independent of a connection sequence of the devices.
    Type: Application
    Filed: March 23, 2020
    Publication date: July 8, 2021
    Applicant: Cypress Semiconductor Corporation
    Inventors: Debraj Bhattacharjee, Kailas Iyer, Palaniappan Subbiah, Subramanyam Sankaran, Anshul Gulati, Neel Karkhanis