Patents by Inventor Yongbin Chu
Yongbin Chu 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: 11967566Abstract: A packaged electronic device includes first conductive leads and second conductive leads at least partially exposed to an exterior of a package structure, and a multilevel lamination structure in the package structure. The multilevel lamination structure includes a first patterned conductive feature having multiple turns in a first level to form a first winding coupled to at least one of the first conductive leads in a first circuit, a second patterned conductive feature having multiple turns in a different level to form a second winding coupled to at least one of the second conductive leads in a second circuit isolated from the first circuit, and a conductive shield trace having multiple turns in a second level spaced apart from and between the first patterned conductive feature and the second patterned conductive feature, the conductive shield trace coupled in the first circuit.Type: GrantFiled: December 21, 2022Date of Patent: April 23, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Vijaylaxmi Gumaste Khanolkar, Robert Martinez, Zhemin Zhang, Yongbin Chu
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Publication number: 20230207483Abstract: A packaged electronic device includes first conductive leads and second conductive leads at least partially exposed to an exterior of a package structure, and a multilevel lamination structure in the package structure. The multilevel lamination structure includes a first patterned conductive feature having multiple turns in a first level to form a first winding coupled to at least one of the first conductive leads in a first circuit, a second patterned conductive feature having multiple turns in a different level to form a second winding coupled to at least one of the second conductive leads in a second circuit isolated from the first circuit, and a conductive shield trace having multiple turns in a second level spaced apart from and between the first patterned conductive feature and the second patterned conductive feature, the conductive shield trace coupled in the first circuit.Type: ApplicationFiled: December 21, 2022Publication date: June 29, 2023Inventors: Vijaylaxmi Gumaste Khanolkar, Robert Martinez, Zhemin Zhang, Yongbin Chu
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Publication number: 20230179090Abstract: In some examples, a circuit includes an amplifier, a resistor, and a damping network. The amplifier has an amplifier output and first and second amplifier inputs. The first amplifier input is adapted to be coupled to a first terminal, and the second amplifier input is configured to receive a reference voltage. The resistor is coupled between the amplifier output and the first amplifier input. The damping network is coupled between the amplifier output and the first terminal.Type: ApplicationFiled: January 31, 2023Publication date: June 8, 2023Inventors: Yongbin CHU, Yogesh Kumar RAMADASS
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Patent number: 11606849Abstract: In described examples, a system (e.g., a light-emitting diode dimmer system) includes a switching device coupled to a switching controller. The switching controller generates a control signal, which includes a low frequency signal (e.g., for controlling a dimming function) and a switching signal. An active electromagnetic interference filter (AEF) is coupled to the DC source. An active shunt is coupled to a power input node of the switching device and is configured to selectively couple a shunt current to the power input node of the switching device in synchronization with the low frequency signal (e.g., which can reduce, if not also eliminate, a saturation time of the AEF and improve the performance of the AEF).Type: GrantFiled: June 28, 2019Date of Patent: March 14, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Yongbin Chu, Yogesh Kumar Ramadass, Jeffrey Anthony Morroni
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Patent number: 11601045Abstract: In some examples, a circuit includes an amplifier, a resistor, and a damping network. The amplifier has an amplifier output and first and second amplifier inputs. The first amplifier input is adapted to be coupled to a first terminal, and the second amplifier input is configured to receive a reference voltage. The resistor is coupled between the amplifier output and the first amplifier input. The damping network is coupled between the amplifier output and the first terminal.Type: GrantFiled: April 1, 2020Date of Patent: March 7, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Yongbin Chu, Yogesh Kumar Ramadass
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Patent number: 11538766Abstract: A packaged electronic device includes first conductive leads and second conductive leads at least partially exposed to an exterior of a package structure, and a multilevel lamination structure in the package structure. The multilevel lamination structure includes a first patterned conductive feature having multiple turns in a first level to form a first winding coupled to at least one of the first conductive leads in a first circuit, a second patterned conductive feature having multiple turns in a different level to form a second winding coupled to at least one of the second conductive leads in a second circuit isolated from the first circuit, and a conductive shield trace having multiple turns in a second level spaced apart from and between the first patterned conductive feature and the second patterned conductive feature, the conductive shield trace coupled in the first circuit.Type: GrantFiled: February 25, 2020Date of Patent: December 27, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Vijaylaxmi Gumaste Khanolkar, Robert Martinez, Zhemin Zhang, Yongbin Chu
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Publication number: 20210313966Abstract: A system includes a conductive chassis having a first ground terminal. The conductive chassis couples to a switching circuit having a second ground terminal and having a first switching frequency. The second ground terminal is electrically isolated from the first ground terminal. An active electromagnetic interference (EMI) filter has an output and first and second inputs, and is configured to receive a first AC voltage having a second switching frequency at the first input, receive a second AC voltage having the second switching frequency at the second input referenced to the first ground terminal, sense noise having the first switching frequency on at least one of the first or second inputs, and generate an injection signal at the output based on the detected noise. The output couples to at least one of the first or second inputs.Type: ApplicationFiled: April 6, 2021Publication date: October 7, 2021Inventors: Ashish KUMAR, Yongbin CHU, Yogesh Kumar RAMADASS
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Publication number: 20200413575Abstract: In described examples, a system (e.g., a light-emitting diode dimmer system) includes a switching device coupled to a switching controller. The switching controller generates a control signal, which includes a low frequency signal (e.g., for controlling a dimming function) and a switching signal. An active electromagnetic interference filter (AEF) is coupled to the DC source. An active shunt is coupled to a power input node of the switching device and is configured to selectively couple a shunt current to the power input node of the switching device in synchronization with the low frequency signal (e.g., which can reduce, if not also eliminate, a saturation time of the AEF and improve the performance of the AEF).Type: ApplicationFiled: June 28, 2019Publication date: December 31, 2020Inventors: Yongbin Chu, Yogesh Kumar Ramadass, Jeffrey Anthony Morroni
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Publication number: 20200373831Abstract: An active electromagnetic interference (EMI) filter includes a first amplifier and a second amplifier. The first amplifier is configured to sense noise signals on a power conductor. The second amplifier is coupled to the first amplifier and is configured to drive a cancellation signal onto the power conductor. The cancellation signal is to reduce the amplitude of the noise signals sensed by the first amplifier. An output impedance of the second amplifier is lower than an output impedance of the first amplifier.Type: ApplicationFiled: August 11, 2020Publication date: November 26, 2020Inventors: Yongbin CHU, Yogesh RAMADASS, Saurav BANDYOPADHYAY, Todd Allen TOPORSKI, Jeffrey Anthony MORRONI
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Publication number: 20200313549Abstract: In some examples, a circuit includes an amplifier, a resistor, and a damping network. The amplifier has an amplifier output and first and second amplifier inputs. The first amplifier input is adapted to be coupled to a first terminal, and the second amplifier input is configured to receive a reference voltage. The resistor is coupled between the amplifier output and the first amplifier input. The damping network is coupled between the amplifier output and the first terminal.Type: ApplicationFiled: April 1, 2020Publication date: October 1, 2020Inventors: Yongbin CHU, Yogesh Kumar RAMADASS
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Publication number: 20200303319Abstract: A packaged electronic device includes first conductive leads and second conductive leads at least partially exposed to an exterior of a package structure, and a multilevel lamination structure in the package structure. The multilevel lamination structure includes a first patterned conductive feature having multiple turns in a first level to form a first winding coupled to at least one of the first conductive leads in a first circuit, a second patterned conductive feature having multiple turns in a different level to form a second winding coupled to at least one of the second conductive leads in a second circuit isolated from the first circuit, and a conductive shield trace having multiple turns in a second level spaced apart from and between the first patterned conductive feature and the second patterned conductive feature, the conductive shield trace coupled in the first circuit.Type: ApplicationFiled: February 25, 2020Publication date: September 24, 2020Applicant: Texas Instruments IncorporatedInventors: Vijaylaxmi Gumaste Khanolkar, Robert Martinez, Zhemin Zhang, Yongbin Chu
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Patent number: 10778089Abstract: An active electromagnetic interference (EMI) filter includes a first amplifier and a second amplifier. The first amplifier is configured to sense noise signals on a power conductor. The second amplifier is coupled to the first amplifier and is configured to drive a cancellation signal onto the power conductor. The cancellation signal is to reduce the amplitude of the noise signals sensed by the first amplifier. An output impedance of the second amplifier is lower than an output impedance of the first amplifier.Type: GrantFiled: September 26, 2017Date of Patent: September 15, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Yongbin Chu, Yogesh Ramadass, Saurav Bandyopadhyay, Todd Allen Toporski, Jeffrey Anthony Morroni
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Patent number: 10374510Abstract: An active electromagnetic interference (EMI) filter includes an amplifier configured to sense noise signals on a power conductor, and drive a cancellation signal onto the power conductor. The cancellation signal is to reduce the amplitude of the noise signals. Some embodiments of the active EMI filter include a high frequency compensation network that improves the high frequency phase margin of the active EMI filter and improves the stability of the active EMI filter at high frequencies. Some embodiments of the active EMI filter include a low frequency compensation capacitor that increases the phase margin of the active EMI filter at low frequencies. Some embodiments of the active EMI filter include low frequency compensation circuitry that increases the low frequency tolerance of the active EMI filter.Type: GrantFiled: September 26, 2017Date of Patent: August 6, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Yongbin Chu, Jeffrey Anthony Morroni, Yogesh Kumar Ramadass
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Publication number: 20180294714Abstract: An active electromagnetic interference (EMI) filter includes a first amplifier and a second amplifier. The first amplifier is configured to sense noise signals on a power conductor. The second amplifier is coupled to the first amplifier and is configured to drive a cancellation signal onto the power conductor. The cancellation signal is to reduce the amplitude of the noise signals sensed by the first amplifier. An output impedance of the second amplifier is lower than an output impedance of the first amplifier.Type: ApplicationFiled: September 26, 2017Publication date: October 11, 2018Inventors: Yongbin CHU, Yogesh RAMADASS, Saurav BANDYOPADHYAY, Todd Allen TOPORSKI, Jeffrey Anthony MORRONI
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Publication number: 20180295758Abstract: An active electromagnetic interference (EMI) filter includes an amplifier configured to sense noise signals on a power conductor, and drive a cancellation signal onto the power conductor. The cancellation signal is to reduce the amplitude of the noise signals. Some embodiments of the active EMI filter include a high frequency compensation network that improves the high frequency phase margin of the active EMI filter and improves the stability of the active EMI filter at high frequencies. Some embodiments of the active EMI filter include a low frequency compensation capacitor that increases the phase margin of the active EMI filter at low frequencies. Some embodiments of the active EMI filter include low frequency compensation circuitry that increases the low frequency tolerance of the active EMI filter.Type: ApplicationFiled: September 26, 2017Publication date: October 11, 2018Inventors: Yongbin CHU, Jeffrey Anthony MORRONI, Yogesh Kumar RAMADASS
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Patent number: 9473042Abstract: Various methods and systems are provided for active power filtering utilizing cascaded multilevel inverters. In one example, among others, a grid active power filter includes a multilevel inverter including a plurality of series connected H-bridges and processing circuitry configured to control switching of the plurality of H-bridges. The multilevel inverter can be coupled to a point of common coupling between a grid and a load. The switching can be controlled based at least in part upon a number of individual harmonic currents drawn by the load. In another example, a method includes determining firing angles for each of a series of single phase H-bridges coupled to a PCC between a grid and a load, and adjusting firing of switches of the single phase H-bridges based upon the firing angles. The firing angles can be based at least in part upon a number of individual harmonic currents drawn by the load.Type: GrantFiled: March 17, 2015Date of Patent: October 18, 2016Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEMInventors: Yongbin Chu, Shuo Wang