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).
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Publication number: 20240063710Abstract: 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: ApplicationFiled: October 31, 2023Publication date: February 22, 2024Inventors: Jiancong RUAN, Runqin TAN, Zhicheng HU
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Patent number: 11837948Abstract: 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: GrantFiled: August 26, 2022Date of Patent: December 5, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan, Zhicheng Hu
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Publication number: 20230275513Abstract: 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: ApplicationFiled: May 3, 2023Publication date: August 31, 2023Inventors: Biao Chen, Jiancong Ruan, Runqin Tan
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Patent number: 11699947Abstract: 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: GrantFiled: December 10, 2020Date of Patent: July 11, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan, Peisheng Zhu
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Patent number: 11677324Abstract: 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: GrantFiled: December 22, 2020Date of Patent: June 13, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Biao Chen, Jiancong Ruan, Runqin Tan
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Patent number: 11671012Abstract: 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: GrantFiled: April 22, 2021Date of Patent: June 6, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan
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Patent number: 11646661Abstract: 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: GrantFiled: April 22, 2021Date of Patent: May 9, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan, Wenkai Chen, Biao Chen
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Publication number: 20220416646Abstract: 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: ApplicationFiled: August 26, 2022Publication date: December 29, 2022Inventors: Jiancong RUAN, Runqin TAN, Zhicheng HU
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Patent number: 11463002Abstract: 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: GrantFiled: October 16, 2019Date of Patent: October 4, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan, Peisheng Zhu
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Patent number: 11462991Abstract: 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: GrantFiled: September 4, 2019Date of Patent: October 4, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan, Zhicheng Hu
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Publication number: 20220200456Abstract: 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: ApplicationFiled: December 22, 2020Publication date: June 23, 2022Inventors: Biao Chen, Jiancong Ruan, Runqin Tan
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Patent number: 11196243Abstract: 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: GrantFiled: February 28, 2020Date of Patent: December 7, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Runqin Tan, Jiancong Ruan, Peisheng Zhu
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Publication number: 20210359602Abstract: 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: ApplicationFiled: April 22, 2021Publication date: November 18, 2021Inventors: Jiancong Ruan, Runqin Tan, Wenkai Chen, Biao Chen
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Publication number: 20210242778Abstract: 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: ApplicationFiled: April 22, 2021Publication date: August 5, 2021Inventors: Jiancong Ruan, Runqin Tan
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Publication number: 20210184563Abstract: 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: ApplicationFiled: December 10, 2020Publication date: June 17, 2021Inventors: Jiancong Ruan, Runqin Tan, Peisheng Zhu
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Patent number: 11018584Abstract: 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: GrantFiled: October 28, 2019Date of Patent: May 25, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jiancong Ruan, Runqin Tan
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Publication number: 20210119527Abstract: 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: ApplicationFiled: February 28, 2020Publication date: April 22, 2021Inventors: Runqin TAN, Jiancong RUAN, Peisheng ZHU
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Publication number: 20200389090Abstract: 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: ApplicationFiled: October 28, 2019Publication date: December 10, 2020Inventors: Jiancong Ruan, Runqin Tan
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Publication number: 20200373837Abstract: 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: ApplicationFiled: October 16, 2019Publication date: November 26, 2020Inventors: Jiancong RUAN, Runqin TAN, Peisheng ZHU
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Publication number: 20200266700Abstract: 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: ApplicationFiled: September 4, 2019Publication date: August 20, 2020Inventors: Jiancong RUAN, Runqin TAN, Zhicheng HU