Patents by Inventor Roberto RIZZOLATTI
Roberto RIZZOLATTI 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: 20230353036Abstract: An apparatus such as a power converter includes a first flying capacitor operative to store a first flying capacitor voltage; a second flying capacitor operative to store a second flying capacitor voltage; an inductor providing coupling between the first flying capacitor and the second flying capacitor; and a network of switches operative to, in accordance with control signals, produce an output voltage via the first flying capacitor voltage and the second flying capacitor voltage.Type: ApplicationFiled: May 2, 2022Publication date: November 2, 2023Inventors: Roberto Rizzolatti, Cheng-Wei Chen, Christian Rainer, Mario Ursino
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Publication number: 20230353058Abstract: This disclosure includes novel ways of implementing a voltage converter that powers a load. For example, the voltage converter includes a first power converter and a second power converter. The first power converter produces an intermediate voltage and a first output current derived from an input voltage. The first power converter supplies the intermediate voltage to the second power converter. The second power converter produces a second output current based on the intermediate voltage received from the first power converter. An output node of the voltage converter outputs a sum of the first output current and the second output current to produce an output voltage. A power supply can be configured to include any number of multiple voltage converters in parallel to power a load.Type: ApplicationFiled: July 10, 2023Publication date: November 2, 2023Inventors: Roberto Rizzolatti, Mario URSINO
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Patent number: 11749454Abstract: An apparatus comprises: first windings, second windings, a magnetic core, and multiple tap nodes. The first windings are primary windings of a multi-tapped autotransformer. The second windings are secondary windings of the multi-tapped autotransformer. The first windings and the second windings are wrapped around the magnetic core, the second windings disposed in a series connection between the first windings. The multiple tap nodes providing coupling of the first windings and the second windings to a power supply circuit such as a switched-capacitor converter.Type: GrantFiled: April 29, 2019Date of Patent: September 5, 2023Assignee: Infineon Technologies Austria AGInventors: Roberto Rizzolatti, Christian Rainer, Otto Wiedenbauer
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Patent number: 11735352Abstract: According to one configuration, an inductor device comprises core material and at least a first electrically conductive path. The core material is fabricated from magnetically permeable material. The first electrically conductive path extends axially through the core material from a proximal end of the inductor device to a distal end of the inductor device. The core material is operable to confine first magnetic flux generated from first current flowing through the first electrically conductive path. The inductor device further includes a gap in the core material. The gap (gas or solid material) has a different magnetic permeability than the core material. Inclusion of the gap in the core material provides a way to tune an inductance of the inductor device and increase a magnetic saturation level of the inductor device. The core material includes any number of electrically conductive paths and corresponding gaps.Type: GrantFiled: July 10, 2020Date of Patent: August 22, 2023Assignee: Infineon Technologies Austria AGInventors: Danny Clavette, Gerald Deboy, Roberto Rizzolatti, Otto Wiedenbauer, Yong Zhou
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Publication number: 20230261571Abstract: A power supply includes an assembly comprising an inductor and a transformer. The inductor and the transformer are integrated to share a core of magnetic permeable material disposed in the assembly. The power supply further includes an unregulated power converter stage and a regulated power converter stage. The unregulated power converter stage implements use of the transformer. The regulated power converter stage implements use of the inductor. A combination of the regulated power converter stage and the unregulated power converter stage operative to collectively produce an output voltage to power a load.Type: ApplicationFiled: February 14, 2022Publication date: August 17, 2023Inventors: Mario Ursino, Stefano SAGGINI, Roberto RIZZOLATTI
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Patent number: 11728721Abstract: A voltage converter powers a load. The voltage converter includes a first power converter and a second power converter. The first power converter produces an intermediate voltage and a first output current derived from an input voltage. The first power converter supplies the intermediate voltage to the second power converter. The second power converter produces a second output current based on the intermediate voltage received from the first power converter. An output node of the voltage converter outputs a sum of the first output current and the second output current to produce an output voltage.Type: GrantFiled: February 18, 2021Date of Patent: August 15, 2023Assignee: Infineon Technologies Austria AGInventors: Stefano Saggini, Mario Ursino, Roberto Rizzolatti, Gerald Deboy
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Patent number: 11705810Abstract: An apparatus includes a first power converter and a second power converter. The first power converter converts an input voltage into a first output voltage; the second power converter converts the first output voltage into a second output voltage that powers a load. The second power converter includes a switched-capacitor converter combined with a magnetic device. The switched-capacitor converter provides capacitive energy transfer; the magnetic device provides magnetic energy transfer. Additionally, the second power converter provides unregulated conversion of the first output voltage into the second output voltage via the capacitive energy transfer and the magnetic energy transfer. To maintain the magnitude of the second output voltage within a desired range or setpoint value, the first power converter regulates a magnitude of the first output voltage based on comparison of a magnitude of the second output voltage with respect to a desired setpoint reference voltage.Type: GrantFiled: May 16, 2022Date of Patent: July 18, 2023Assignee: Infineon Technologies Austria AGInventors: Roberto Rizzolatti, Christian Rainer
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Patent number: 11502597Abstract: A power supply system comprises: a switched-capacitor converter, a monitor, and a controller. The switched-capacitor converter includes an input node to receive an input voltage and an output voltage to output an output voltage. Switching of multiple switches in the switched-capacitor converter converts the input voltage into the output voltage. As its name suggests, the monitor monitors a magnitude of the output voltage. The controller receives input indicating the magnitude of the output voltage. Depending on the magnitude of the output voltage, the controller controls states of the multiple switches during startup of the switched-capacitor converter.Type: GrantFiled: January 8, 2020Date of Patent: November 15, 2022Assignee: Infineon Technologies Austria AGInventors: Christian Rainer, Roberto Rizzolatti
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Patent number: 11469678Abstract: A power supply system comprises: a switched-capacitor converter, a transformer, and a voltage converter. The switched-capacitor converter includes multiple capacitors. The multiple capacitors are controllably switched in a circuit path including a primary winding of the transformer to convert the first voltage into a second voltage. The voltage converter converts the first voltage produced by the switched-capacitor converter into the second voltage that powers a load.Type: GrantFiled: September 21, 2020Date of Patent: October 11, 2022Assignee: Infineon Technologies Austria AGInventors: Christian Rainer, Roberto Rizzolatti, Otto Wiedenbauer
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Publication number: 20220271657Abstract: An apparatus includes a first power converter and a second power converter. The first power converter converts an input voltage into a first output voltage; the second power converter converts the first output voltage into a second output voltage that powers a load. The second power converter includes a switched-capacitor converter combined with a magnetic device. The switched-capacitor converter provides capacitive energy transfer; the magnetic device provides magnetic energy transfer. Additionally, the second power converter provides unregulated conversion of the first output voltage into the second output voltage via the capacitive energy transfer and the magnetic energy transfer. To maintain the magnitude of the second output voltage within a desired range or setpoint value, the first power converter regulates a magnitude of the first output voltage based on comparison of a magnitude of the second output voltage with respect to a desired setpoint reference voltage.Type: ApplicationFiled: May 16, 2022Publication date: August 25, 2022Inventors: Roberto Rizzolatti, Christian Rainer
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Publication number: 20220263410Abstract: This disclosure includes novel ways of implementing a voltage converter that powers a load. For example, the voltage converter includes a first power converter and a second power converter. The first power converter produces an intermediate voltage and a first output current derived from an input voltage. The first power converter supplies the intermediate voltage to the second power converter. The second power converter produces a second output current based on the intermediate voltage received from the first power converter. An output node of the voltage converter outputs a sum of the first output current and the second output current to produce an output voltage. A power supply can be configured to include any number of multiple voltage converters in parallel to power a load.Type: ApplicationFiled: February 18, 2021Publication date: August 18, 2022Inventors: Stefano SAGGINI, Mario URSINO, Roberto RIZZOLATTI, Gerald DEBOY
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Publication number: 20220224231Abstract: An apparatus such as a power converter includes a first flying capacitor, a second flying capacitor, etc., an inductor, and a network of switches. The network of switches controls conveyance of energy from the multiple flying capacitors to the inductor. The inductor converts the received energy into an output voltage to power a load. A magnitude of the respective voltage on each of the flying capacitors is substantially the same.Type: ApplicationFiled: January 13, 2021Publication date: July 14, 2022Applicant: Infineon Technologies Austria AGInventors: Roberto Rizzolatti, Stefano Saggini, Matthias J. Kasper, Christian Rainer, Mario Ursino
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Patent number: 11362585Abstract: An apparatus includes a first power converter and a second power converter. The first power converter converts an input voltage into a first output voltage; the second power converter converts the first output voltage into a second output voltage that powers a load. The second power converter includes a switched-capacitor converter combined with a magnetic device. The switched-capacitor converter provides capacitive energy transfer; the magnetic device provides magnetic energy transfer. Additionally, the second power converter provides unregulated conversion of the first output voltage into the second output voltage via the capacitive energy transfer and the magnetic energy transfer. To maintain the magnitude of the second output voltage within a desired range or setpoint value, the first power converter regulates a magnitude of the first output voltage based on comparison of a magnitude of the second output voltage with respect to a desired setpoint reference voltage.Type: GrantFiled: March 13, 2020Date of Patent: June 14, 2022Assignee: Infineon Technologies Austria AGInventors: Roberto Rizzolatti, Christian Rainer
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Patent number: 11362576Abstract: An apparatus such as a power supply system includes a switched-capacitor converter operative to receive an input voltage. The switched-capacitor converter includes multiple resonant circuit paths to convert the input voltage into a first output voltage and a second output voltage. A first output of the switched-capacitor converter is operative to output the first output voltage; a second output of the switched-capacitor converter is operative to output the second output voltage.Type: GrantFiled: March 16, 2021Date of Patent: June 14, 2022Assignee: Infineon Technologies Austria AGInventor: Roberto Rizzolatti
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Publication number: 20220013276Abstract: According to one configuration, an inductor device comprises core material and at least a first electrically conductive path. The core material is fabricated from magnetically permeable material. The first electrically conductive path extends axially through the core material from a proximal end of the inductor device to a distal end of the inductor device. The core material is operable to confine first magnetic flux generated from first current flowing through the first electrically conductive path. The inductor device further includes a gap in the core material. The gap (gas or solid material) has a different magnetic permeability than the core material. Inclusion of the gap in the core material provides a way to tune an inductance of the inductor device and increase a magnetic saturation level of the inductor device. The core material includes any number of electrically conductive paths and corresponding gaps.Type: ApplicationFiled: July 10, 2020Publication date: January 13, 2022Inventors: Danny Clavette, Gerald Deboy, Roberto RIZZOLATTI, Otto WIEDENBAUER, Yong Zhou
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Publication number: 20210288576Abstract: An apparatus includes a first power converter and a second power converter. The first power converter converts an input voltage into a first output voltage; the second power converter converts the first output voltage into a second output voltage that powers a load. The second power converter includes a switched-capacitor converter combined with a magnetic device. The switched-capacitor converter provides capacitive energy transfer; the magnetic device provides magnetic energy transfer. Additionally, the second power converter provides unregulated conversion of the first output voltage into the second output voltage via the capacitive energy transfer and the magnetic energy transfer. To maintain the magnitude of the second output voltage within a desired range or setpoint value, the first power converter regulates a magnitude of the first output voltage based on comparison of a magnitude of the second output voltage with respect to a desired setpoint reference voltage.Type: ApplicationFiled: March 13, 2020Publication date: September 16, 2021Inventors: Roberto Rizzolatti, Christian Rainer
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Publication number: 20210211040Abstract: A power supply system comprises: a switched-capacitor converter, a monitor, and a controller. The switched-capacitor converter includes an input node to receive an input voltage and an output voltage to output an output voltage. Switching of multiple switches in the switched-capacitor converter converts the input voltage into the output voltage. As its name suggests, the monitor monitors a magnitude of the output voltage. The controller receives input indicating the magnitude of the output voltage. Depending on the magnitude of the output voltage, the controller controls states of the multiple switches during startup of the switched-capacitor converter.Type: ApplicationFiled: January 8, 2020Publication date: July 8, 2021Inventors: Christian Rainer, Roberto Rizzolatti
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Patent number: 11011980Abstract: A power supply system comprises: a switched-capacitor converter, a multi-tapped autotransformer, and an output stage. The multi-tapped autotransformer includes multiple primary windings. The switched-capacitor converter includes multiple circuit paths coupled to the primary windings. For example, a first circuit path includes a first capacitor; a second circuit path includes a second capacitor. The power supply further includes a controller that controllably switches an input voltage to the first circuit path and the second circuit path, conveying energy to the primary windings of the multi-tapped autotransformer. The output stage of the power supply is coupled to receive energy from a combination of the first primary winding and the second primary winding of the multi-tapped autotransformer. Via the received energy, the output stage produces an output voltage that powers a load.Type: GrantFiled: July 30, 2020Date of Patent: May 18, 2021Assignee: Infineon Technologies Austria AGInventors: Roberto Rizzolatti, Christian Rainer, Otto Wiedenbauer
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Publication number: 20210006174Abstract: A power supply system comprises: a switched-capacitor converter, a transformer, and a voltage converter. The switched-capacitor converter includes multiple capacitors. The multiple capacitors are controllably switched in a circuit path including a primary winding of the transformer to convert the first voltage into a second voltage. The voltage converter converts the first voltage produced by the switched-capacitor converter into the second voltage that powers a load.Type: ApplicationFiled: September 21, 2020Publication date: January 7, 2021Inventors: Christian Rainer, Roberto Rizzolatti, Otto Wiedenbauer
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Publication number: 20200358352Abstract: A power supply system comprises: a switched-capacitor converter, a multi-tapped autotransformer, and an output stage. The multi-tapped autotransformer includes multiple primary windings. The switched-capacitor converter includes multiple circuit paths coupled to the primary windings. For example, a first circuit path includes a first capacitor; a second circuit path includes a second capacitor. The power supply further includes a controller that controllably switches an input voltage to the first circuit path and the second circuit path, conveying energy to the primary windings of the multi-tapped autotransformer. The output stage of the power supply is coupled to receive energy from a combination of the first primary winding and the second primary winding of the multi-tapped autotransformer. Via the received energy, the output stage produces an output voltage that powers a load.Type: ApplicationFiled: July 30, 2020Publication date: November 12, 2020Inventors: Roberto Rizzolatti, Christian Rainer, Otto Wiedenbauer