Patents by Inventor Dushmantha Bandara RAJAPAKSHA

Dushmantha Bandara RAJAPAKSHA 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: 20230336083
    Abstract: A semiconductor package includes a transformer having a primary winding and a secondary winding. The primary winding has first and second terminals and a pair of taps. The secondary winding has first and second terminals and a pair of taps. The semiconductor package includes first and second data transfer circuits, a bridge, and a rectifier. The first data transfer circuit is coupled to the pair of taps of the primary winding. The second data transfer circuit is coupled to the pair of taps of the secondary winding. The bridge is coupled to the first and second terminals of the primary winding. The rectifier is coupled to the first and second terminals of the secondary winding.
    Type: Application
    Filed: July 19, 2022
    Publication date: October 19, 2023
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dushmantha Bandara RAJAPAKSHA, Roland SPERLICH, Anant Shankar KAMATH, Vijayalakshmi DEVARAJAN, Wesley RAY
  • Patent number: 11443889
    Abstract: A semiconductor package includes a transformer having a primary winding and a secondary winding. The primary winding has first and second terminals and a pair of taps. The secondary winding has first and second terminals and a pair of taps. The semiconductor package includes first and second data transfer circuits, a bridge, and a rectifier. The first data transfer circuit is coupled to the pair of taps of the primary winding. The second data transfer circuit is coupled to the pair of taps of the secondary winding. The bridge is coupled to the first and second terminals of the primary winding. The rectifier is coupled to the first and second terminals of the secondary winding.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: September 13, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dushmantha Bandara Rajapaksha, Roland Sperlich, Anant Shankar Kamath, Vijayalakshmi Devarajan, Wesley Ray
  • Patent number: 11380631
    Abstract: A lead frame for a multi-chip module includes a first conductor structure disposed on a substrate and having first and second arms linked at an angle. The first conductor structure is connected to ground. The lead frame also includes a second conductor structure disposed on the substrate and connected to a voltage supply. The second conductor structure is spaced apart and electrically isolated from the first conductor structure. The first and the second conductor structures are arranged to flank a plurality of integrated circuits (ICs) including one or more surge protection ICs disposed on the substrate. The first conductor structure is electrically connected to the plurality of ICs to provide electrical connections to ground, and the second conductor structure is electrically connected to the plurality of ICs to provide electrical connections to the voltage supply.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: July 5, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dushmantha Bandara Rajapaksha, Vijayalakshmi Devarajan, Roland Sperlich, Wesley Ray
  • Patent number: 11336331
    Abstract: Systems and methods are disclosed for an integrated circuit (IC) comprising an oscillator, an on-off-keying modulator configured to modulate input data coupled to the oscillator, a serial communications transmitter coupled to the on-off-keying modulator, a serial communications receiver coupled to the serial communications transmitter by a set of cables, and an envelope detector coupled to the serial communications receiver. In the IC, power and data are simultaneously delivered across the same set of cables from the serial communications transmitter to the serial communications receiver.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: May 17, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dushmantha Bandara Rajapaksha, Wesley Ray, Hao Liu, Maxwell Robertson
  • Patent number: 11310072
    Abstract: A transceiver includes a driver stage and a transient-triggered ring suppression circuit. The driver stage has a first transistor coupled between a supply voltage terminal and a first bus terminal and a second transistor coupled between a ground and a second bus terminal. The transient-triggered ring suppression circuit is coupled to the first and second transistors. The transient-triggered ring suppression circuit is configured to be enabled upon transition of the transceiver from a dominant state to a recessive state. Further, while the transceiver is in the recessive state, the transient-triggered ring suppression circuit is configured to attenuate ringing on at least one of the first or second bus terminals.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: April 19, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Richard Sterling Broughton, Vijayalakshmi Devarajan, Wesley Ryan Ray, Dushmantha Bandara Rajapaksha
  • Publication number: 20210288690
    Abstract: Systems and methods are disclosed for an integrated circuit (IC) comprising an oscillator, an on-off-keying modulator configured to modulate input data coupled to the oscillator, a serial communications transmitter coupled to the on-off-keying modulator, a serial communications receiver coupled to the serial communications transmitter by a set of cables, and an envelope detector coupled to the serial communications receiver. In the IC, power and data are simultaneously delivered across the same set of cables from the serial communications transmitter to the serial communications receiver.
    Type: Application
    Filed: May 27, 2021
    Publication date: September 16, 2021
    Inventors: Dushmantha Bandara RAJAPAKSHA, Wesley RAY, Hao LIU, Maxwell ROBERTSON
  • Patent number: 11050460
    Abstract: Systems and methods are disclosed for an integrated circuit (IC) comprising an oscillator, an on-off-keying modulator configured to modulate input data coupled to the oscillator, a serial communications transmitter coupled to the on-off-keying modulator, a serial communications receiver coupled to the serial communications transmitter by a set of cables, and an envelope detector coupled to the serial communications receiver. In the IC, power and data are simultaneously delivered across the same set of cables from the serial communications transmitter to the serial communications receiver.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: June 29, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Dushmantha Bandara Rajapaksha, Wesley Ray, Hao Liu, Maxwell Robertson
  • Publication number: 20210167989
    Abstract: A transceiver includes a driver stage and a transient-triggered ring suppression circuit. The driver stage has a first transistor coupled between a supply voltage terminal and a first bus terminal and a second transistor coupled between a ground and a second bus terminal. The transient-triggered ring suppression circuit is coupled to the first and second transistors. The transient-triggered ring suppression circuit is configured to be enabled upon transition of the transceiver from a dominant state to a recessive state. Further, while the transceiver is in the recessive state, the transient-triggered ring suppression circuit is configured to attenuate ringing on at least one of the first or second bus terminals.
    Type: Application
    Filed: October 5, 2020
    Publication date: June 3, 2021
    Inventors: Richard Sterling BROUGHTON, Vijayalakshmi DEVARAJAN, Wesley Ryan RAY, Dushmantha Bandara RAJAPAKSHA
  • Publication number: 20210159192
    Abstract: A lead frame for a multi-chip module includes a first conductor structure disposed on a substrate and having first and second arms linked at an angle. The first conductor structure is connected to ground. The lead frame also includes a second conductor structure disposed on the substrate and connected to a voltage supply. The second conductor structure is spaced apart and electrically isolated from the first conductor structure. The first and the second conductor structures are arranged to flank a plurality of integrated circuits (ICs) including one or more surge protection ICs disposed on the substrate. The first conductor structure is electrically connected to the plurality of ICs to provide electrical connections to ground, and the second conductor structure is electrically connected to the plurality of ICs to provide electrical connections to the voltage supply.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 27, 2021
    Inventors: Dushmantha Bandara Rajapaksha, Vijayalakshmi Devarajan, Roland Sperlich, Wesley Ray
  • Publication number: 20200402702
    Abstract: A semiconductor package includes a transformer having a primary winding and a secondary winding. The primary winding has first and second terminals and a pair of taps. The secondary winding has first and second terminals and a pair of taps. The semiconductor package includes first and second data transfer circuits, a bridge, and a rectifier. The first data transfer circuit is coupled to the pair of taps of the primary winding. The second data transfer circuit is coupled to the pair of taps of the secondary winding. The bridge is coupled to the first and second terminals of the primary winding. The rectifier is coupled to the first and second terminals of the secondary winding.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Inventors: Dushmantha Bandara RAJAPAKSHA, Roland SPERLICH, Anant Shankar KAMATH, Vijayalakshmi DEVARAJAN, Wesley RAY
  • Publication number: 20190386703
    Abstract: Systems and methods are disclosed for an integrated circuit (IC) comprising an oscillator, an on-off-keying modulator configured to modulate input data coupled to the oscillator, a serial communications transmitter coupled to the on-off-keying modulator, a serial communications receiver coupled to the serial communications transmitter by a set of cables, and an envelope detector coupled to the serial communications receiver. In the IC, power and data are simultaneously delivered across the same set of cables from the serial communications transmitter to the serial communications receiver.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 19, 2019
    Inventors: Dushmantha Bandara RAJAPAKSHA, Wesley RAY, Hao LIU, Maxwell ROBERTSON