Patents by Inventor David Meneses
David Meneses 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: 20240178741Abstract: A power converter includes: a solid-state transformer having a DC input and isolated DC outputs; a half bridge converter stage for each isolated DC output of the solid-state transformer, wherein an input of each half bridge converter stage is connected to the corresponding isolated DC output and an output of the half bridge converter stages are electrically connected in a cascade configuration; an output inductor shared by the half bridge converter stages and configured to deliver an output current; and a controller configured to implement phase shift control of the half bridge converter stages relative to one another, based on the number of half bridge converter stages and an output voltage of the power converter being regulated, such that each half bridge converter stage processes the full output current but only a fraction of the output voltage. Methods of controlling the power converter are also described.Type: ApplicationFiled: November 30, 2022Publication date: May 30, 2024Inventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, Alessandro Pevere, David Meneses Herrera
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Patent number: 11953971Abstract: Disclosed is a method and a control circuit. The method includes operating a buffer circuit in a first operating mode or a second operating mode. Operating the buffer circuit in the first operating mode includes buffering, by a first capacitor of the buffer circuit, power provided by a power source and received by a load. Operating the buffer circuit in the second operating mode includes connecting a second capacitor in series with the first capacitor to form a capacitor series circuit, supplying power to the load by the capacitor series circuit, and regulating a first voltage across the capacitor series circuit. Regulating the first voltage includes transferring charge from the first capacitor to the second capacitor.Type: GrantFiled: June 8, 2022Date of Patent: April 9, 2024Assignee: Infineon Technologies Austria AGInventors: Manuel Escudero Rodriguez, David Meneses Herrera, Matteo-Alessandro Kutschak
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Publication number: 20220407405Abstract: Disclosed is a method and a control circuit. The method includes operating a buffer circuit (1) in a first operating mode or a second operating mode. Operating the buffer circuit (1) in the first operating mode includes buffering, by a capacitor parallel circuit including a first capacitor (11) and a second capacitor (12), power (Po) provided by a power source (3) and received by a load (4). Operating the buffer circuit (1) in the second operating mode includes supplying power to the load (4) by the second capacitor (12), and regulating a first voltage (Upn) across the second capacitor (12), wherein regulating the first voltage (Upn) comprises transferring charge from the first capacitor (11) to the second capacitor (12).Type: ApplicationFiled: May 17, 2022Publication date: December 22, 2022Inventors: Manuel ESCUDERO RODRIGUEZ, Jon AZURZA ANDERSON, Matthias J. Kasper, David MENESES HERRERA
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Publication number: 20220404896Abstract: Disclosed is a method and a control circuit. The method includes operating a buffer circuit in a first operating mode or a second operating mode. Operating the buffer circuit in the first operating mode includes buffering, by a first capacitor of the buffer circuit, power provided by a power source and received by a load. Operating the buffer circuit in the second operating mode includes connecting a second capacitor in series with the first capacitor to form a capacitor series circuit, supplying power to the load by the capacitor series circuit, and regulating a first voltage across the capacitor series circuit. Regulating the first voltage includes transferring charge from the first capacitor to the second capacitor.Type: ApplicationFiled: June 8, 2022Publication date: December 22, 2022Inventors: Manuel Escudero Rodriguez, David Meneses Herrera, Matteo-Alessandro Kutschak
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Patent number: 11476753Abstract: A phase-shifted full bridge (PSFB) switching converter includes a transformer having a primary winding and a secondary winding; an input capacitor coupled to the primary winding via a first transistor full bridge; an output inductor coupled to the secondary winding via a synchronous rectifier circuit including at least one first transistor and at least one second transistor; and a controller circuit for generating switching signals for the rectifier circuit to operate the PSFB switching converter in reverse direction. During a startup phase, at the beginning of which the input capacitor is substantially discharged, the at least one first transistor is switched on in each switching cycle to allow an inductor current to pass from an output node, via the output inductor and the secondary winding, to a ground node, the at least one first transistor is again switched off when the inductor current reaches a threshold value.Type: GrantFiled: May 4, 2021Date of Patent: October 18, 2022Assignee: Infineon Technologies Austria AGInventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, David Meneses Herrera
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Publication number: 20210376741Abstract: A phase-shifted full bridge (PSFB) switching converter includes a transformer having a primary winding and a secondary winding; an input capacitor coupled to the primary winding via a first transistor full bridge; an output inductor coupled to the secondary winding via a synchronous rectifier circuit including at least one first transistor and at least one second transistor; and a controller circuit for generating switching signals for the rectifier circuit to operate the PSFB switching converter in reverse direction. During a startup phase, at the beginning of which the input capacitor is substantially discharged, the at least one first transistor is switched on in each switching cycle to allow an inductor current to pass from an output node, via the output inductor and the secondary winding, to a ground node, the at least one first transistor is again switched off when the inductor current reaches a threshold value.Type: ApplicationFiled: May 4, 2021Publication date: December 2, 2021Inventors: Manuel ESCUDERO RODRIGUEZ, Matteo-Alessandro KUTSCHAK, David MENESES HERRERA
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Patent number: 11050354Abstract: A bi-directional LLC converter includes: first and second sides coupled by an isolation transformer, the first side including a switch network connected to an LLC network, the LLC network including a first winding of the isolation transformer, the second side including a switch network connected to a second winding of the isolation transformer; and a controller operable to operate the LLC converter in a forward mode in which the first side functions as an inverter and the second side functions as a rectifier, and to operate the LLC converter in a reverse mode in which the second side functions as an inverter and the first side functions as a rectifier. In the reverse mode, the controller is operable to delay turn off of the switch network on the first side at an operating frequency above resonance of the LLC converter, to yield a gain greater than one in the reverse mode.Type: GrantFiled: September 27, 2019Date of Patent: June 29, 2021Assignee: Infineon Technologies Austria AGInventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, David Meneses Herrera
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Publication number: 20210099096Abstract: A bi-directional LLC converter includes: first and second sides coupled by an isolation transformer, the first side including a switch network connected to an LLC network, the LLC network including a first winding of the isolation transformer, the second side including a switch network connected to a second winding of the isolation transformer; and a controller operable to operate the LLC converter in a forward mode in which the first side functions as an inverter and the second side functions as a rectifier, and to operate the LLC converter in a reverse mode in which the second side functions as an inverter and the first side functions as a rectifier. In the reverse mode, the controller is operable to delay turn off of the switch network on the first side at an operating frequency above resonance of the LLC converter, to yield a gain greater than one in the reverse mode.Type: ApplicationFiled: September 27, 2019Publication date: April 1, 2021Inventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, David Meneses Herrera
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Patent number: 10892678Abstract: A bidirectional phase-shift full bridge converter includes a primary side having switch devices forming a full-bridge power stage and a first inductor connected to the power stage, a secondary side having switch devices forming a power stage and a second inductor connected to that power stage, a transformer, and a controller for controlling switching of the switch devices to transfer energy from the primary to secondary side in a first mode, and to transfer energy from the secondary to primary side in a second mode. In the second mode, the controller controls switching of the switch devices to pre-charge the first inductor at, near or above a current level of the second inductor prior to transferring energy from the secondary to primary side, so that the current in the first inductor is at, near or above the current in the second inductor at the beginning of the energy transfer.Type: GrantFiled: August 9, 2017Date of Patent: January 12, 2021Assignee: Infineon Technologies Austria AGInventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, David Meneses Herrera
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Patent number: 10680528Abstract: Controllers, systems and methods are presented related to resonant converters. In case of a load imbalance between the resonant converters, an on-time of a synchronous rectifier switch of one of the resonant converters is reduced.Type: GrantFiled: August 10, 2018Date of Patent: June 9, 2020Assignee: Infineon Technologies Austria AGInventors: David Meneses Herrera, Matteo-Alessandro Kutschak
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Publication number: 20190052180Abstract: Controllers, systems and methods are presented related to resonant converters. In case of a load imbalance between the resonant converters, an on-time of a synchronous rectifier switch of one of the resonant converters is reduced.Type: ApplicationFiled: August 10, 2018Publication date: February 14, 2019Inventors: David Meneses Herrera, Matteo-Alessandro Kutschak
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Publication number: 20190052167Abstract: A bidirectional phase-shift full bridge converter includes a primary side having switch devices forming a full-bridge power stage and a first inductor connected to the power stage, a secondary side having switch devices forming a power stage and a second inductor connected to that power stage, a transformer, and a controller for controlling switching of the switch devices to transfer energy from the primary to secondary side in a first mode, and to transfer energy from the secondary to primary side in a second mode. In the second mode, the controller controls switching of the switch devices to pre-charge the first inductor at, near or above a current level of the second inductor prior to transferring energy from the secondary to primary side, so that the current in the first inductor is at, near or above the current in the second inductor at the beginning of the energy transfer.Type: ApplicationFiled: August 9, 2017Publication date: February 14, 2019Inventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, David Meneses Herrera
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Patent number: 9979308Abstract: An LLC converter has a primary side with power switch devices coupled to an LLC tank circuit at a common node, a secondary side with synchronous rectifier switch devices, and a transformer coupling the primary side to the secondary side. In a first mode of operation, the power switch devices and the synchronous rectifier switch devices are switched at a frequency calculated to regulate an output voltage of the LLC converter. In a second mode of operation during light-load conditions in which the output voltage is unregulated, the power switch devices are switched until the output voltage rises to a first level and then turned off until the output voltage falls to a second level below the first level. The synchronous rectifier switch devices are continuously switched in the second mode of operation, irrespective of the state of the output voltage.Type: GrantFiled: June 2, 2017Date of Patent: May 22, 2018Assignee: Infineon Technologies Austria AGInventors: David Meneses Herrera, Matteo-Alessandro Kutschak
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Patent number: 7337616Abstract: A system for sampling cryogenic liquids, and an air separation unit provided with at least one such system. The cryogenic liquid is introduced into a vaporizer, through heat exchange with the compressed air. The liquid passes through the vaporizer generally downwards. The walls of the vaporizer that are intended to come into contact with the cryogenic liquid are maintained at a temperature above the sublimation temperature or the boiling point of the least volatile impurity contained in this liquid. Downstream of the vaporizer, a gaseous phase coming from the vaporization of the cryogenic liquid is withdrawn and at least some of the gaseous phase is sent to an analyzer.Type: GrantFiled: April 25, 2003Date of Patent: March 4, 2008Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: David Meneses, Jean-Yves Thonnelier, Jean-Yves Lehman
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Publication number: 20060064931Abstract: Method and apparatus for creating a gaseous mixture containing controlled amounts of hydrogen and carbon monoxide. Hydrogen and carbon monoxide are produced through partial catalytic oxidation reactions between hydrocarbons and oxygen. The oxidation takes place in a reactor at a temperature of less than 1200° C. and at a pressure between 3 bar and 20 bar. A gas mixture of hydrogen and some carbon monoxide is then recovered from the oxidation. This mixture is transferred to a cooling chamber where it is cooled, by direct contact with pressurized water, to a temperature between ?20° C. and 80° C. The cooled gas is also at a pressure between 3 bar and 20 bar. The cooling chamber and the reactor are both located in the same vessel, such that the gas transport time between the two is less than 50 milliseconds.Type: ApplicationFiled: December 15, 2003Publication date: March 30, 2006Inventors: Daniel Gary, David Meneses, Clotilde Muller
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Publication number: 20030228707Abstract: According to this method:Type: ApplicationFiled: April 25, 2003Publication date: December 11, 2003Inventors: David Meneses, Jean-Yves Thonnelier, Jean-Yves Lehman