Patents by Inventor Giorgio Spiazzi
Giorgio Spiazzi 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: 11863080Abstract: An active-clamped isolated SEPIC DC-DC power converter (ACISC) to convert a DC voltage to supply a variety of DC loads. The single-ended primary-inductor converter (SEPIC) of the ACISC may be configured to perform both buck and boost converter functions. The ACISC of this disclosure may be configured to operate over a wide input voltage range to provide an output voltage for DC electronic loads supplied by the power converter. In the example of an automobile, a back-up twelve volt battery may output voltages to the ACISC over a wide voltage range, e.g., nine volts to eighteen volts. The wide input voltage range of the ACISC may be desirable when used as the converter for a back-up battery supply. The circuitry arrangement and component selection of the ACISC of this disclosure cause the power converter to operate in resonant DCM mode in the megahertz (MHz) frequency range.Type: GrantFiled: February 15, 2022Date of Patent: January 2, 2024Assignees: Infineon Technologies AG, Università Degli Studi di PadovaInventors: Stefano Cabizza, Giorgio Spiazzi, Cristian Garbossa
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Publication number: 20230318472Abstract: An active-clamped isolated SEPIC DC-DC power converter (ACISC) to convert a DC voltage to supply a variety of DC loads. The single-ended primary-inductor converter (SEPIC) of the ACISC may be configured to perform both buck and boost converter functions. The ACISC of this disclosure may be configured to operate over a wide input voltage range to provide an output voltage for DC electronic loads supplied by the power converter. In the example of an automobile, a back-up twelve volt battery may output voltages to the ACISC over a wide voltage range, e.g., nine volts to eighteen volts. The wide input voltage range of the ACISC may be desirable when used as the converter for a back-up battery supply. The circuitry arrangement and component selection of the ACISC of this disclosure cause the power converter to operate in resonant DCM mode in the megahertz (MHz) frequency range.Type: ApplicationFiled: February 15, 2022Publication date: October 5, 2023Applicant: Università degli Studi di PadovaInventors: Stefano Cabizza, Giorgio Spiazzi, Cristian Garbossa
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Patent number: 11329568Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: GrantFiled: July 20, 2020Date of Patent: May 10, 2022Assignee: STMicroelectronics S.r.l.Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Publication number: 20200350826Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: ApplicationFiled: July 20, 2020Publication date: November 5, 2020Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Patent number: 10756637Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: GrantFiled: December 6, 2018Date of Patent: August 25, 2020Assignee: STMICROELECTRONICS S.R.L.Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Publication number: 20190109543Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: ApplicationFiled: December 6, 2018Publication date: April 11, 2019Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Patent number: 10193461Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: GrantFiled: August 31, 2017Date of Patent: January 29, 2019Assignee: STMicroelectronics S.r.l.Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Publication number: 20180006568Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: ApplicationFiled: August 31, 2017Publication date: January 4, 2018Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Patent number: 9780678Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: GrantFiled: June 22, 2010Date of Patent: October 3, 2017Assignee: STMicroelectronics S.r.l.Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Patent number: 8605467Abstract: A converter circuit includes a transformer having a first side and a second side. The converter circuit also includes a switch coupled to the first side of the transformer. The converter circuit further includes a rectifying diode coupled to the second side of the transformer and to a first output terminal of the converter circuit. In addition, the converter circuit includes a clamping diode coupled to the second side of the transformer, to the rectifying diode, and to a second output terminal of the converter circuit. The converter circuit may include a boost section and a flyback section. The converter circuit may also include an active clamp and an isolated flyback section.Type: GrantFiled: May 19, 2010Date of Patent: December 10, 2013Assignee: National Semiconductor CorporationInventors: Giovanni Frattini, Giorgio Spiazzi, Paolo Mattavelli
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Publication number: 20110013425Abstract: A converter circuit includes a transformer having a first side and a second side. The converter circuit also includes a switch coupled to the first side of the transformer. The converter circuit further includes a rectifying diode coupled to the second side of the transformer and to a first output terminal of the converter circuit. In addition, the converter circuit includes a clamping diode coupled to the second side of the transformer, to the rectifying diode, and to a second output terminal of the converter circuit. The converter circuit may include a boost section and a flyback section. The converter circuit may also include an active clamp and an isolated flyback section.Type: ApplicationFiled: May 19, 2010Publication date: January 20, 2011Applicants: National Semiconductor Corporation, UNIVERSITA ' DEGLI STUDI DI PADOVAInventors: Giovanni Frattini, Giorgio Spiazzi, Paolo Mattavelli
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Publication number: 20100328968Abstract: A PWM controlled multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.Type: ApplicationFiled: June 22, 2010Publication date: December 30, 2010Applicant: STMicroelectronics S.r.I.Inventors: Claudio Adragna, Giuseppe Gattavari, Paolo Mattavelli, Enrico Orietti, Giorgio Spiazzi
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Patent number: 7233113Abstract: A power supply system for liquid crystal monitors includes a first DC/AC converter (FBS, HBS) operating at predetermined frequency and duty-cycles and being fed by a second DC/DC converter (FC) which regulates the circuit voltage. The feeding system can feed all the fluorescent lamps (L, L1, LN) in the monitor through a bus connection which transmits the output sinusoidal voltage (SG1, SG2, SG3) from the first DC/AC converter (FBS, HBS) to the primary windings of a plurality of parallel connected piezoelectric transformers (PT, PT1, PT2, PTN, PT2N) which are connected with the fluorescent lamps (L, L1, LN).Type: GrantFiled: August 6, 2004Date of Patent: June 19, 2007Assignee: Global Display Solutions S.p.A.Inventors: Andrea Ongaro, Giorgio Spiazzi, Simone Buso, Paolo Tomasin
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Patent number: 5646460Abstract: A control device for heating elements, particularly for use in household electrical appliances such as cookers, cooking hobs, ovens and the like, comprising a driven switch in series with the, a first capacitor acting as a filter in parallel with the load, a second capacitor acting as a freewheeling capacitor operationally in series with the load and with the capacitor, these two being connected in parallel, and at least one inductor means in series with the load, characterised in that: a) the driven switch is a static switch hence able to assume an open state and a closed state; b) an inductor is provided in parallel with the load, or alternatively a section of the inductor means is in parallel with the load; c) a freewheeling diode is provided connected between an intermediate point between the inductor or section and freewheeling capacitor and an intermediate point between the load and static switch, so that when the static switch is in one state the freewheeling capacitor is charged via the freewheeling dType: GrantFiled: September 29, 1995Date of Patent: July 8, 1997Assignee: Whirlpool Europe B.V.Inventors: Cesare Bocchiola, Paolo Tenti, Leopoldo Rossetto, Giorgio Spiazzi