Patents by Inventor JIANCONG RUAN

JIANCONG RUAN 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: 20240063710
    Abstract: Some aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes an integrator coupled between a first node and a second node and a filter coupled between the second node and a third node. The circuit further includes a buffer coupled between the third node and a fourth node and a first switch coupled between the fourth node and a fifth node. The circuit further includes a first capacitor coupled between the fifth node and a ground node, a first resistor comprising a first terminal coupled to the fifth node and a second terminal, a second switch coupled between the second terminal of the first resistor and the ground node.
    Type: Application
    Filed: October 31, 2023
    Publication date: February 22, 2024
    Inventors: Jiancong RUAN, Runqin TAN, Zhicheng HU
  • Patent number: 11837948
    Abstract: Some aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes an integrator coupled between a first node and a second node and a filter coupled between the second node and a third node. The circuit further includes a buffer coupled between the third node and a fourth node and a first switch coupled between the fourth node and a fifth node. The circuit further includes a first capacitor coupled between the fifth node and a ground node, a first resistor comprising a first terminal coupled to the fifth node and a second terminal, a second switch coupled between the second terminal of the first resistor and the ground node.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: December 5, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan, Zhicheng Hu
  • Publication number: 20230275513
    Abstract: A converter system includes a switch adapted to be coupled to an inductor, and configured to switch between first and second states responsive to a loop control signal. Calibration circuitry is configured to operate in first and second control modes, provide a calibration voltage in the first control mode, and store the calibration voltage in the second control mode. In a first instance of the first control mode, the calibration voltage is based on a difference between a feedback voltage and a reference voltage. In a second instance of the first control mode, the calibration voltage is the stored calibration voltage from the second control mode. A comparator is coupled to the switch and the calibration unit, and is configured to provide the loop control signal based on a combination of at least the feedback voltage, the reference voltage, the calibration voltage, and a periodic signal.
    Type: Application
    Filed: May 3, 2023
    Publication date: August 31, 2023
    Inventors: Biao Chen, Jiancong Ruan, Runqin Tan
  • Patent number: 11699947
    Abstract: A converter system (100) includes a switch (102) adapted to be coupled to a switching terminal (104). The switch (102) is configured to generate a switching signal having first and second states at the switching terminal (104). Ripple generating circuitry (122) is adapted to be coupled to the switching terminal (104) and is configured to: generate a filtered signal based on the switching signal; and keep the filtered signal within a particular range. Loop control circuitry (116) is coupled to the ripple generating circuitry (122) and is configured to control the switch (102) based on the filtered signal.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: July 11, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan, Peisheng Zhu
  • Patent number: 11677324
    Abstract: A converter system includes a switch adapted to be coupled to an inductor, and configured to switch between first and second states responsive to a loop control signal. Calibration circuitry is configured to operate in first and second control modes, provide a calibration voltage in the first control mode, and store the calibration voltage in the second control mode. In a first instance of the first control mode, the calibration voltage is based on a difference between a feedback voltage and a reference voltage. In a second instance of the first control mode, the calibration voltage is the stored calibration voltage from the second control mode. A comparator is coupled to the switch and the calibration unit, and is configured to provide the loop control signal based on a combination of at least the feedback voltage, the reference voltage, the calibration voltage, and a periodic signal.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: June 13, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Biao Chen, Jiancong Ruan, Runqin Tan
  • Patent number: 11671012
    Abstract: A switching regulator includes a high side transistor coupled to an input voltage node. The switching regulator also includes a low side transistor coupled to the high side transistor at a switch node. An adaptive on-time control circuit is also included and is configured to cause the high side transistor to turn on for an adaptive period of time based on a ratio of an output voltage from the switching regulator to input voltage. The adaptive period of time is configured to occur responsive to a current through an inductor falling below a predetermined threshold.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: June 6, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan
  • Patent number: 11646661
    Abstract: A voltage converter system includes a switch configured to operate in first and second states. Compensation circuitry is configured to provide: a certain reference voltage as a reference voltage when the switch has the second state; and a compensated reference voltage as the reference voltage when the switch has the first state. Control circuitry is configured to switch the switch between the first and second states based on the reference voltage and a feedback voltage generated based on an output voltage of the voltage converter system.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: May 9, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan, Wenkai Chen, Biao Chen
  • Publication number: 20220416646
    Abstract: Some aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes an integrator coupled between a first node and a second node and a filter coupled between the second node and a third node. The circuit further includes a buffer coupled between the third node and a fourth node and a first switch coupled between the fourth node and a fifth node. The circuit further includes a first capacitor coupled between the fifth node and a ground node, a first resistor comprising a first terminal coupled to the fifth node and a second terminal, a second switch coupled between the second terminal of the first resistor and the ground node.
    Type: Application
    Filed: August 26, 2022
    Publication date: December 29, 2022
    Inventors: Jiancong RUAN, Runqin TAN, Zhicheng HU
  • Patent number: 11463002
    Abstract: A switch-mode power supply circuit includes a feedback terminal, a control circuit, a comparator, and a switch. The comparator includes a first input terminal coupled to a reference voltage source, and an output terminal coupled to an input terminal of the control circuit. The switch includes a first terminal coupled to the feedback terminal, a second terminal coupled to a second input terminal of the comparator, and a third terminal coupled to an output terminal of the control circuit.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 4, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan, Peisheng Zhu
  • Patent number: 11462991
    Abstract: Some aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes an integrator coupled between a first node and a second node and a filter coupled between the second node and a third node. The circuit further includes a buffer coupled between the third node and a fourth node and a first switch coupled between the fourth node and a fifth node. The circuit further includes a first capacitor coupled between the fifth node and a ground node, a first resistor comprising a first terminal coupled to the fifth node and a second terminal, a second switch coupled between the second terminal of the first resistor and the ground node.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: October 4, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan, Zhicheng Hu
  • Publication number: 20220200456
    Abstract: A converter system includes a switch adapted to be coupled to an inductor, and configured to switch between first and second states responsive to a loop control signal. Calibration circuitry is configured to operate in first and second control modes, provide a calibration voltage in the first control mode, and store the calibration voltage in the second control mode. In a first instance of the first control mode, the calibration voltage is based on a difference between a feedback voltage and a reference voltage. In a second instance of the first control mode, the calibration voltage is the stored calibration voltage from the second control mode. A comparator is coupled to the switch and the calibration unit, and is configured to provide the loop control signal based on a combination of at least the feedback voltage, the reference voltage, the calibration voltage, and a periodic signal.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 23, 2022
    Inventors: Biao Chen, Jiancong Ruan, Runqin Tan
  • Patent number: 11196243
    Abstract: An example system includes an input voltage terminal; a power converter integrated circuit (IC) package fuselessly coupled to the input voltage terminal and having first and second pins, the power converter IC package configured to detect a short between the first and second pins; and a load circuit coupled to the power converter IC package.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: December 7, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Runqin Tan, Jiancong Ruan, Peisheng Zhu
  • Publication number: 20210359602
    Abstract: A voltage converter system includes a switch configured to operate in first and second states. Compensation circuitry is configured to provide: a certain reference voltage as a reference voltage when the switch has the second state; and a compensated reference voltage as the reference voltage when the switch has the first state. Control circuitry is configured to switch the switch between the first and second states based on the reference voltage and a feedback voltage generated based on an output voltage of the voltage converter system.
    Type: Application
    Filed: April 22, 2021
    Publication date: November 18, 2021
    Inventors: Jiancong Ruan, Runqin Tan, Wenkai Chen, Biao Chen
  • Publication number: 20210242778
    Abstract: A switching regulator includes a high side transistor coupled to an input voltage node. The switching regulator also includes a low side transistor coupled to the high side transistor at a switch node. An adaptive on-time control circuit is also included and is configured to cause the high side transistor to turn on for an adaptive period of time based on a ratio of an output voltage from the switching regulator to input voltage. The adaptive period of time is configured to occur responsive to a current through an inductor falling below a predetermined threshold.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 5, 2021
    Inventors: Jiancong Ruan, Runqin Tan
  • Publication number: 20210184563
    Abstract: A converter system (100) includes a switch (102) adapted to be coupled to a switching terminal (104). The switch (102) is configured to generate a switching signal having first and second states at the switching terminal (104). Ripple generating circuitry (122) is adapted to be coupled to the switching terminal (104) and is configured to: generate a filtered signal based on the switching signal; and keep the filtered signal within a particular range. Loop control circuitry (116) is coupled to the ripple generating circuitry (122) and is configured to control the switch (102) based on the filtered signal.
    Type: Application
    Filed: December 10, 2020
    Publication date: June 17, 2021
    Inventors: Jiancong Ruan, Runqin Tan, Peisheng Zhu
  • Patent number: 11018584
    Abstract: A switching regulator includes a high side transistor coupled to an input voltage node. The switching regulator also includes a low side transistor coupled to the high side transistor at a switch node. An adaptive on-time control circuit is also included and is configured to cause the high side transistor to turn on for an adaptive period of time based on a ratio of an output voltage from the switching regulator to input voltage. The adaptive period of time is configured to occur responsive to a current through an inductor falling below a predetermined threshold.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: May 25, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jiancong Ruan, Runqin Tan
  • Publication number: 20210119527
    Abstract: An example system includes an input voltage terminal; a power converter integrated circuit (IC) package fuselessly coupled to the input voltage terminal and having first and second pins, the power converter IC package configured to detect a short between the first and second pins; and a load circuit coupled to the power converter IC package.
    Type: Application
    Filed: February 28, 2020
    Publication date: April 22, 2021
    Inventors: Runqin TAN, Jiancong RUAN, Peisheng ZHU
  • Publication number: 20200389090
    Abstract: A switching regulator includes a high side transistor coupled to an input voltage node. The switching regulator also includes a low side transistor coupled to the high side transistor at a switch node. An adaptive on-time control circuit is also included and is configured to cause the high side transistor to turn on for an adaptive period of time based on a ratio of an output voltage from the switching regulator to input voltage. The adaptive period of time is configured to occur responsive to a current through an inductor falling below a predetermined threshold.
    Type: Application
    Filed: October 28, 2019
    Publication date: December 10, 2020
    Inventors: Jiancong Ruan, Runqin Tan
  • Publication number: 20200373837
    Abstract: A switch-mode power supply circuit includes a feedback terminal, a control circuit, a comparator, and a switch. The comparator includes a first input terminal coupled to a reference voltage source, and an output terminal coupled to an input terminal of the control circuit. The switch includes a first terminal coupled to the feedback terminal, a second terminal coupled to a second input terminal of the comparator, and a third terminal coupled to an output terminal of the control circuit.
    Type: Application
    Filed: October 16, 2019
    Publication date: November 26, 2020
    Inventors: Jiancong RUAN, Runqin TAN, Peisheng ZHU
  • Publication number: 20200266700
    Abstract: Some aspects of the present disclosure provide for a circuit. In at least some examples, the circuit includes an integrator coupled between a first node and a second node and a filter coupled between the second node and a third node. The circuit further includes a buffer coupled between the third node and a fourth node and a first switch coupled between the fourth node and a fifth node. The circuit further includes a first capacitor coupled between the fifth node and a ground node, a first resistor comprising a first terminal coupled to the fifth node and a second terminal, a second switch coupled between the second terminal of the first resistor and the ground node.
    Type: Application
    Filed: September 4, 2019
    Publication date: August 20, 2020
    Inventors: Jiancong RUAN, Runqin TAN, Zhicheng HU