Patents by Inventor Shanguang Xu
Shanguang Xu 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: 20240113326Abstract: The present disclosure provides a vanadium electrolyte, a preparation method and use thereof.Type: ApplicationFiled: June 22, 2023Publication date: April 4, 2024Inventors: Xiongwei WU, Hui XU, Hao XIE, Shanguang LV, Xuewen WU, Na FU
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Publication number: 20240014742Abstract: In at least one example, an apparatus includes a current sense circuit, an imbalance detector, and a current balancer. The current sense circuit including a first phase input, a second phase input, a first sense output, and a second sense output. The imbalance detector having a detector output, a first detector input, and second detector input. The first detector input is coupled to the first sense output and the second detector input is coupled to the second sense output. The current balancer having a balancer input and a balancer output. The balancer input is coupled to the detector output.Type: ApplicationFiled: July 25, 2022Publication date: January 11, 2024Inventors: Shanguang XU, Hua TANG, Zhaofu ZHOU, Teng FENG, Ian L. BOWER
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Publication number: 20230041194Abstract: An example apparatus includes: a first and second capacitor; a first and second inductor; a first switch having a first and second terminal, the first terminal coupled to the first capacitor, and the second terminal coupled to the first and second inductor; a second switch having a third and fourth terminal, the third terminal coupled to the second terminal, the fourth terminal coupled to the second capacitor; a third switch having a fifth and sixth terminal, the fifth terminal coupled to the first terminal, the sixth terminal coupled to the second inductor; and a diode having a seventh and eighth terminal, the seventh terminal coupled to the sixth terminal, the eighth terminal coupled to the fourth terminal.Type: ApplicationFiled: January 28, 2022Publication date: February 9, 2023Inventors: Hua Tang, Shanguang Xu, Zhaofu Zhou, Teng Feng, Ian Lloyd Bower
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Patent number: 11201547Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.Type: GrantFiled: May 9, 2019Date of Patent: December 14, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Philomena Cleopha Brady, Ananthakrishnan Viswanathan, Shanguang Xu
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Publication number: 20190267903Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.Type: ApplicationFiled: May 9, 2019Publication date: August 29, 2019Inventors: Philomena Cleopha Brady, Ananthakrishnan Viswanathan, Shanguang Xu
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Publication number: 20190207521Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.Type: ApplicationFiled: January 18, 2018Publication date: July 4, 2019Inventors: PHILOMENA CLEOPHA BRADY, ANANTHAKRISHNAN VISWANATHAN, SHANGUANG XU
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Patent number: 10326373Abstract: A switching converter is provided that includes a power MOSFET, a controller having a drive pin connected to a gate terminal of the power MOSFET, and a resistor connected to the gate terminal. A compensation time selection circuit is included that has compensation times stored therein. A compensation time is selected from the compensation times based on a value of the resistor and stored in the controller. The selected compensation time compensates for an inherent delay in switching the power MOSFET to an ON state after the power MOSFET receives a signal to switch to the ON state to allow the power MOSFET to switch to the ON state when a drain voltage of the power MOSFET's reaches its lowest value during a switching cycle.Type: GrantFiled: January 18, 2018Date of Patent: June 18, 2019Assignee: Texas Instruments IncorporatedInventors: Philomena Cleopha Brady, Ananthakrishnan Viswanathan, Shanguang Xu
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Patent number: 10177673Abstract: Generally speaking, a timing circuit helps determine diode conduction time of an LLC converter. In some examples, the circuit includes an LLC converter having a secondary side and a timing circuit, the timing circuit coupled to the LLC converter on the secondary side. The timing circuit includes a first branch, second branch, gate, and microprocessor. The gate is configured to receive an output of the first branch's comparator and a blanking signal from the second branch. The microprocessor is configured to receive, from the gate, a signal and determine, based at least in part on the signal, a diode conduction time for the LLC converter.Type: GrantFiled: November 3, 2017Date of Patent: January 8, 2019Assignee: Texas Instruments IncorporatedInventors: Shanguang Xu, Yitzhak Bolurian, Vaibhav Ramakant Desai
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Publication number: 20180198375Abstract: Generally speaking, a timing circuit helps determine diode conduction time of an LLC converter. In some examples, the circuit includes an LLC converter having a secondary side and a timing circuit, the timing circuit coupled to the LLC converter on the secondary side. The timing circuit includes a first branch, second branch, gate, and microprocessor. The gate is configured to receive an output of the first branch's comparator and a blanking signal from the second branch. The microprocessor is configured to receive, from the gate, a signal and determine, based at least in part on the signal, a diode conduction time for the LLC converter.Type: ApplicationFiled: November 3, 2017Publication date: July 12, 2018Inventors: Shanguang Xu, Yitzhak Bolurian, Vaibhav Ramakant Desai
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Publication number: 20170025969Abstract: A semiconductor device includes a current monitor circuit to measure a load current. A controller controls drive signals having a signal phase to operate a synchronous rectifier (SR) circuit based on the measured load current from the current monitor circuit. The controller applies a first control phase sequence to control the signal phase to the SR circuit if the measured load current is above a predetermined current threshold. The controller applies a second control phase sequence to control the signal phase to the SR circuit if the measured load current is equal or below the predetermined current threshold.Type: ApplicationFiled: July 7, 2016Publication date: January 26, 2017Inventors: SHANGUANG XU, BRENT A. MCDONALD
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Patent number: 9118239Abstract: A digital power supply and power supply controller are presented, including a voltage control loop and a current control loop, with a controller for pulse width modulating a switching power supply according to a voltage control loop duty cycle output or a current control loop duty cycle output, in which the controller selectively presets the voltage control loop duty cycle output to a predetermined value before switching from current loop control to voltage loop control and/or inhibits increase in a voltage loop integrator value during current loop control to mitigate voltage overshoot.Type: GrantFiled: March 15, 2013Date of Patent: August 25, 2015Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Shanguang Xu, Zhong Ye
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Patent number: 8891269Abstract: Methods and circuits for balancing current in a transformer are disclosed herein. An embodiment of the method includes sensing the magnitude and direction of current flow through the primary side of the transformer. The magnitude of current flowing in a first direction is compared to the magnitude of current flowing in a second direction through the primary side of the transformer. An AC signal driving the primary side of the transformer is adjusted so that the current flow in the first direction is substantially the same as current flow in the second direction.Type: GrantFiled: October 10, 2011Date of Patent: November 18, 2014Assignee: Texas Instruments IncorporatedInventors: Zhong Ye, Shanguang Xu
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Patent number: 8675375Abstract: The present invention provides a DC/DC converter for use with a DC input signal. The DC/DC converter includes a control signal generator, a primary and a secondary side, a voltage generating portion, a threshold voltage providing portion and a feedback signal generator. The control signal generator can control the primary side and the secondary side. The voltage generating portion can generate a surge voltage based a control signal from the control signal generator. The threshold voltage providing portion can generate a threshold voltage. The feedback signal generator can generate a feedback signal based on the surge voltage and the threshold voltage. The control signal generator can further modify control of one of the primary and secondary sides based on the feedback signal.Type: GrantFiled: December 16, 2011Date of Patent: March 18, 2014Assignee: Texas Instruments IncorporatedInventors: Shanguang Xu, Zhong Ye
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Publication number: 20130258731Abstract: A digital power supply and power supply controller are presented, including a voltage control loop and a current control loop, with a controller for pulse width modulating a switching power supply according to a voltage control loop duty cycle output or a current control loop duty cycle output, in which the controller selectively presets the voltage control loop duty cycle output to a predetermined value before switching from current loop control to voltage loop control and/or inhibits increase in a voltage loop integrator value during current loop control to mitigate voltage overshoot.Type: ApplicationFiled: March 15, 2013Publication date: October 3, 2013Applicant: Texas Instruments IncorporatedInventors: Shanguang Xu, Zhong Ye
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Publication number: 20130155726Abstract: The present invention provides a DC/DC converter for use with a DC input signal. The DC/DC converter includes a control signal generator, a primary and a secondary side, a voltage generating portion, a threshold voltage providing portion and a feedback signal generator. The control signal generator can control the primary side and the secondary side. The voltage generating portion can generate a surge voltage based a control signal from the control signal generator. The threshold voltage providing portion can generate a threshold voltage. The feedback signal generator can generate a feedback signal based on the surge voltage and the threshold voltage. The control signal generator can further modify control of one of the primary and secondary sides based on the feedback signal.Type: ApplicationFiled: December 16, 2011Publication date: June 20, 2013Inventors: Shanguang Xu, Zhong Ye
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Publication number: 20130088895Abstract: Methods and circuits for balancing current in a transformer are disclosed herein. An embodiment of the method includes sensing the magnitude and direction of current flow through the primary side of the transformer. The magnitude of current flowing in a first direction is compared to the magnitude of current flowing in a second direction through the primary side of the transformer. An AC signal driving the primary side of the transformer is adjusted so that the current flow in the first direction is substantially the same as current flow in the second direction.Type: ApplicationFiled: October 10, 2011Publication date: April 11, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Zhong Ye, Shanguang Xu