Patents by Inventor Ravi Konduru
Ravi Konduru 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).
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Patent number: 11892484Abstract: Disclosed are techniques for using a sense amplifier for the voltage path having an adjustable gain and a current amplifier for the current path having an adjustable sample-hold interval for demodulation of in-band ASK data in power transmitting devices of a wireless charging system. The sample-hold interval may be adjusted as a function of the error rate of the demodulated data and used to sample the modulated current when the adjustable gain of the voltage path is not able to track the modulated voltage. The adjustable sample-hold may function as a variable reference of a comparator used to compare the sampled current to generate the sensed current. A controller may flexibly adjust the gain, adjust the sample-hold interval, and/or select the sensed voltage or the sensed current path for further filtering, demodulation, decoding, and processing depending on the error rate under various loading, coupling scenarios, and phases of power transfer.Type: GrantFiled: February 11, 2022Date of Patent: February 6, 2024Assignee: Cypress Semiconductor CorporationInventors: Prasanna Venkateswaran Vijayakumar, Arun Khamesra, Jegannathan Ramanujam, Ravi Konduru
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Patent number: 11886264Abstract: A Universal Serial Bus (USB)-Power Delivery (PD) integrated circuit (IC) controller is described. The controller includes: a driver circuit configured to control operation of a buck-boost converter electrically coupled to a USB voltage bus power line; a gate driver controller configured to control the driver circuit in a first mode, wherein changes in duty cycle are limited to a predetermined number of cycles in the first mode; a sense circuit configured to generate a sense signal proportional to current flowing in the USB voltage bus power line; and an analog detection circuit configured to detect whether a slew rate of the sense signal exceeds a reference slew rate. The gate driver controller is configured to override the limit placed on the changes in duty cycle in the first mode responsive to the analog detection circuit indicating that the slew rate of the sense signal exceeds the reference slew rate.Type: GrantFiled: September 8, 2021Date of Patent: January 30, 2024Assignee: Cypress Semiconductor CorporationInventor: Ravi Konduru
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Publication number: 20230258694Abstract: Disclosed are techniques for using a sense amplifier for the voltage path having an adjustable gain and a current amplifier for the current path having an adjustable sample-hold interval for demodulation of in-band ASK data in power transmitting devices of a wireless charging system. The sample-hold interval may be adjusted as a function of the error rate of the demodulated data and used to sample the modulated current when the adjustable gain of the voltage path is not able to track the modulated voltage. The adjustable sample-hold may function as a variable reference of a comparator used to compare the sampled current to generate the sensed current. A controller may flexibly adjust the gain, adjust the sample-hold interval, and/or select the sensed voltage or the sensed current path for further filtering, demodulation, decoding, and processing depending on the error rate under various loading, coupling scenarios, and phases of power transfer.Type: ApplicationFiled: February 11, 2022Publication date: August 17, 2023Applicant: Cypress Semiconductor CorporationInventors: Prasanna Venkateswaran Vijayakumar, Arun Khamesra, Jegannathan Ramanujam, Ravi Konduru
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Publication number: 20220083112Abstract: A Universal Serial Bus (USB)-Power Delivery (PD) integrated circuit (IC) controller is described. The controller includes: a driver circuit configured to control operation of a buck-boost converter electrically coupled to a USB voltage bus power line; a gate driver controller configured to control the driver circuit in a first mode, wherein changes in duty cycle are limited to a predetermined number of cycles in the first mode; a sense circuit configured to generate a sense signal proportional to current flowing in the USB voltage bus power line; and an analog detection circuit configured to detect whether a slew rate of the sense signal exceeds a reference slew rate. The gate driver controller is configured to override the limit placed on the changes in duty cycle in the first mode responsive to the analog detection circuit indicating that the slew rate of the sense signal exceeds the reference slew rate.Type: ApplicationFiled: September 8, 2021Publication date: March 17, 2022Applicant: Cypress Semiconductor CorporationInventor: Ravi Konduru
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Patent number: 10990560Abstract: A USB-C controller, disposed on an integrated circuit (IC), comprises a first pair of terminals to communicate with a first communication protocol that is other than USB, a second pair of terminals to communicate with a second communication protocol that is other than USB, and a third pair of terminals, each of which is to be coupled to a corresponding SBU1 terminal or SBU2 terminal of a Type-C receptacle. The USB-C controller further includes: a multiplexer to selectively couple the first pair of terminals to the third pair of terminals and the second pair of terminals to the third pair of terminals: and logic to control the multiplexer according to a mode enabled within a configuration channel (CC) signal.Type: GrantFiled: May 17, 2019Date of Patent: April 27, 2021Assignee: Cypress Semiconductor CorporationInventors: Arun Khamesra, Anup Nayak, Partha Mondal, Hemant Prakash Vispute, Ravi Konduru
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Publication number: 20190391950Abstract: A USB-C controller, disposed on an integrated circuit (IC), comprises a first pair of terminals to communicate with a first communication protocol that is other than USB, a second pair of terminals to communicate with a second communication protocol that is other than USB, and a third pair of terminals, each of which is to be coupled to a corresponding SBU1 terminal or SBU2 terminal of a Type-C receptacle. The USB-C controller further includes: a multiplexer to selectively couple the first pair of terminals to the third pair of terminals and the second pair of terminals to the third pair of terminals: and logic to control the multiplexer according to a mode enabled within a configuration channel (CC) signal.Type: ApplicationFiled: May 17, 2019Publication date: December 26, 2019Applicant: Cypress Semiconductor CorporationInventors: Arun Khamesra, Anup Nayak, Partha Mondal, Hemant Prakash Vispute, Ravi Konduru
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Patent number: 10353853Abstract: A device includes a USB-C controller instantiated as a first integrated circuit, the USB-C controller comprising a first pair of terminals to communicate with a first communication protocol that is other than USB, a second pair of terminals to communicate with a second communication protocol that is other than USB, and a third pair of terminals, each of which is to be coupled to a corresponding SBU1 terminal or SBU2 terminal of a type-C receptacle. The controller further includes a multiplexer to selectively couple the first pair of terminals to the third pair of terminals and the second pair of terminals to the third pair of terminals. The controller further includes a series of cascaded, low-voltage n-type field-effect transistors (LVNFETs) coupled between the multiplexer and each terminal of the third pair of terminals.Type: GrantFiled: June 5, 2018Date of Patent: July 16, 2019Assignee: Cypress Semiconductor CorporationInventors: Arun Khamesra, Anup Nayak, Partha Mondal, Hemant P. Vispute, Ravi Konduru
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Publication number: 20050102584Abstract: A handheld device is provided in communication with an EEPROM in a control of a vehicle. Software in the device provides for reading EEPROM settings, writing EEPROM settings, retrieving fault data, a sentry monitoring mode, and flash downloading the control. A system for communicating with the control includes the handheld device, the control including an EEPROM, a communications link between the handheld device and the control, and software loaded into the handheld device for reading and updating settings stored in the EEPROM. A storage medium and a method provides an install tool for installing computer program code onto the handheld device and displaying a main menu, the main menu listing options for communicating between the computer and the EEPROM, the options including EEPROM settings, fault and sentry, and flash download.Type: ApplicationFiled: November 6, 2003Publication date: May 12, 2005Inventors: Ramesh Paturi, Rangababu Thota, Ravi Konduru, David Wilbon, Robert Seymour, Brian Meyer, John Harrison