Patents by Inventor Lingxiao Xue
Lingxiao Xue 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: 20230231392Abstract: A power sharing multiport charger or a power sharing multiport supply is provided. The power sharing may be provided via time division multiplexing of power output from a switch mode power supply.Type: ApplicationFiled: January 11, 2023Publication date: July 20, 2023Inventor: Lingxiao Xue
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Publication number: 20230231489Abstract: A rectifier for use in a power supply is provided, including a capacitor charge control circuit operable to enable reduction in bulk capacitance.Type: ApplicationFiled: January 11, 2023Publication date: July 20, 2023Inventor: Lingxiao Xue
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Patent number: 11664743Abstract: A control system and method for an inverter that reduces capacitor current through a DC bus capacitor of the inverter. The control system and method may generate switching signals for a plurality of switching circuits in a manner that reduces capacitor current through the DC bus capacitor.Type: GrantFiled: August 12, 2021Date of Patent: May 30, 2023Assignee: UT-Battelle, LLCInventors: Lingxiao Xue, Gui-Jia Su
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Publication number: 20220052626Abstract: A control system and method for an inverter that reduces capacitor current through a DC bus capacitor of the inverter. The control system and method may generate switching signals for a plurality of switching circuits in a manner that reduces capacitor current through the DC bus capacitor.Type: ApplicationFiled: August 12, 2021Publication date: February 17, 2022Inventors: Lingxiao Xue, Gui-Jia Su
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Patent number: 10523127Abstract: A converter circuit is disclosed. The converter circuit includes a transformer and a primary circuit connected to the primary side of the transformer, where the primary circuit includes a first switch connected to a ground. The converter circuit also includes a second switch connected to the first switch, and a clamping capacitor connected to the second switch and to the input. The converter circuit also includes a secondary circuit connected to the secondary side of the transformer, where the secondary circuit includes a secondary capacitor, an inductor, and a bypass element in parallel with the inductor.Type: GrantFiled: April 30, 2019Date of Patent: December 31, 2019Assignee: Navitas Semiconductor, Inc.Inventors: Lingxiao Xue, Jason Ju Zhang
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Patent number: 10425011Abstract: A full bridge circuit is disclosed. The full bridge circuit includes first and second half bridge circuits each having a midpoint node, and a transmitter tank circuit connected across the midpoint nodes and configured to transmit power based on the transmitter tank current to a load. The full bridge circuit also includes a ZVS tank circuit connected across the midpoint nodes. The ZVS tank circuit generates first and second ZVS tank currents. The first ZVS tank current and the transmitter tank current cooperatively cause the voltage at the first midpoint node to be substantially equal to the voltage of a power or ground node, and the second ZVS tank current and the transmitter tank current cooperatively cause the voltage at the second midpoint node to be substantially equal to the voltage of the power or ground node.Type: GrantFiled: December 28, 2018Date of Patent: September 24, 2019Assignee: Navitas Semiconductor, Inc.Inventors: Lingxiao Xue, Ju Zhang
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Publication number: 20190149057Abstract: A converter circuit is disclosed. The converter circuit includes a transformer and a primary circuit connected to the primary side of the transformer, where the primary circuit includes a first switch connected to a ground. The converter circuit also includes a second switch connected to the first switch, and a clamping capacitor connected to the second switch and to the input. The converter circuit also includes a secondary circuit connected to the secondary side of the transformer, where the secondary circuit includes a rectifying element, and an output capacitor connected to the rectifying element. In addition, the output capacitor has a substantial effect on resonance of the converter circuit.Type: ApplicationFiled: September 5, 2018Publication date: May 16, 2019Inventors: Lingxiao Xue, Ju Zhang
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Patent number: 10291141Abstract: A converter circuit is disclosed. The converter circuit includes a transformer and a primary circuit connected to the primary side of the transformer, where the primary circuit includes a first switch connected to a ground. The converter circuit also includes a second switch connected to the first switch, and a clamping capacitor connected to the second switch and to the input. The converter circuit also includes a secondary circuit connected to the secondary side of the transformer, where the secondary circuit includes a rectifying element, and an output capacitor connected to the rectifying element. In addition, the output capacitor has a substantial effect on resonance of the converter circuit.Type: GrantFiled: September 5, 2018Date of Patent: May 14, 2019Assignee: Navitas Semiconductor, Inc.Inventors: Lingxiao Xue, Ju Zhang
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Patent number: 10250053Abstract: The present invention provides a battery charger and battery charging method controlled with a charging waveform input of an AC-DC switching circuit to a DC link and a DC-DC stage converter for outputting a regulated DC voltage. The method determining the charging waveform comprising the steps of selecting a Pulse Width Modulation (PWM) zero-off charging waveform signal input to the AC-DC switching circuit and calculating a ripple power at the DC link based on the signal input power and output power of the regulated DC voltage output.Type: GrantFiled: December 16, 2015Date of Patent: April 2, 2019Assignee: Virginia Tech Intellectual Properties, Inc.Inventors: Lingxiao Xue, Paolo Mattavelli, Dushan Boroyevich
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Patent number: 10186971Abstract: A full bridge circuit is disclosed. The full bridge circuit includes first and second half bridge circuits each having a midpoint node, and a transmitter tank circuit connected across the midpoint nodes and configured to transmit power based on the transmitter tank current to a load. The full bridge circuit also includes a ZVS tank circuit connected across the midpoint nodes. The ZVS tank circuit generates first and second ZVS tank currents. The first ZVS tank current and the transmitter tank current cooperatively cause the voltage at the first midpoint node to be substantially equal to the voltage of a power or ground node, and the second ZVS tank current and the transmitter tank current cooperatively cause the voltage at the second midpoint node to be substantially equal to the voltage of the power or ground node.Type: GrantFiled: February 28, 2017Date of Patent: January 22, 2019Assignee: Navitas Semiconductor, Inc.Inventors: Lingxiao Xue, Ju Zhang
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Patent number: 10097100Abstract: A converter circuit is disclosed. The converter circuit includes a transformer and a primary circuit connected to the primary side of the transformer, where the primary circuit includes a first switch connected to a ground. The converter circuit also includes a second switch connected to the first switch, and a clamping capacitor connected to the second switch and to the input. The converter circuit also includes a secondary circuit connected to the secondary side of the transformer, where the secondary circuit includes a rectifying element, and an output capacitor connected to the rectifying element. In addition, the output capacitor has a substantial effect on resonance of the converter circuit.Type: GrantFiled: February 8, 2018Date of Patent: October 9, 2018Assignee: Navitas Semiconductor, Inc.Inventors: Lingxiao Xue, Ju Zhang
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Patent number: 9954456Abstract: A converter circuit is disclosed. The converter circuit includes a transformer and a primary circuit connected to the primary side of the transformer, where the primary circuit includes a first switch connected to a ground. The converter circuit also includes a second switch connected to the first switch, and a clamping capacitor connected to the second switch and to the input. The converter circuit also includes a secondary circuit connected to the secondary side of the transformer, where the secondary circuit includes a rectifying element, and an output capacitor connected to the rectifying element. In addition, the output capacitor has a substantial effect on resonance of the converter circuit.Type: GrantFiled: September 8, 2017Date of Patent: April 24, 2018Assignee: Navitas Semiconductor, Inc.Inventors: Lingxiao Xue, Ju Zhang
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Publication number: 20180076725Abstract: A converter circuit is disclosed. The converter circuit includes a transformer and a primary circuit connected to the primary side of the transformer, where the primary circuit includes a first switch connected to a ground. The converter circuit also includes a second switch connected to the first switch, and a clamping capacitor connected to the second switch and to the input. The converter circuit also includes a secondary circuit connected to the secondary side of the transformer, where the secondary circuit includes a rectifying element, and an output capacitor connected to the rectifying element. In addition, the output capacitor has a substantial effect on resonance of the converter circuit.Type: ApplicationFiled: September 8, 2017Publication date: March 15, 2018Inventors: Lingxiao Xue, Ju Zhang
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Publication number: 20160172877Abstract: The present invention provides a battery charger and battery charging method controlled with a charging waveform input of an AC-DC switching circuit to a DC link and a DC-DC stage converter for outputting a regulated DC voltage. The method determining the charging waveform comprising the steps of selecting a Pulse Width Modulation (PWM) zero-off charging waveform signal input to the AC-DC switching circuit and calculating a ripple power at the DC link based on the signal input power and output power of the regulated DC voltage output.Type: ApplicationFiled: December 16, 2015Publication date: June 16, 2016Inventors: Lingxiao Xue, Paolo Mattavelli, Dushan Boroyevich