Patents by Inventor Siamak Abedinpour
Siamak Abedinpour 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: 10749350Abstract: A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.Type: GrantFiled: April 2, 2018Date of Patent: August 18, 2020Assignee: Integrated Device Technology, Inc.Inventors: Rosario Pagano, Christopher Joseph Daffron, Angel Maria Gomez Arguello, Siamak Abedinpour
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Patent number: 10734817Abstract: A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.Type: GrantFiled: April 2, 2018Date of Patent: August 4, 2020Assignee: Integrated Device Technology, Inc.Inventors: Rosario Pagano, Christopher Joseph Daffron, Angel Maria Gomez Arguello, Siamak Abedinpour
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Patent number: 10199818Abstract: A system and method of over-voltage protection includes a switch coupled between a power source and a load, a detection circuit configured to detect an onset of an over-voltage event at the load; and a driver circuit coupled to the switch and the detection circuit. The driver circuit includes a boost sub-circuit that provides a low-resistance path for opening the switch in a boost mode, the boost mode being triggered by the onset of the over-voltage event and having a predetermined duration and a steady state sub-circuit that provides a high-resistance path for holding the switch open during steady state operation when the boost mode.Type: GrantFiled: April 1, 2016Date of Patent: February 5, 2019Assignee: Integrated Device Technology, Inc.Inventors: Rosario Pagano, Herman R. Paz, Siamak Abedinpour
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Publication number: 20180294653Abstract: A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.Type: ApplicationFiled: April 2, 2018Publication date: October 11, 2018Inventors: Rosario PAGANO, Christopher Joseph DAFFRON, Angel Maria GOMEZ ARGUELLO, Siamak ABEDINPOUR
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Publication number: 20180226806Abstract: A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.Type: ApplicationFiled: April 2, 2018Publication date: August 9, 2018Inventors: Rosario PAGANO, Christopher Joseph DAFFRON, Angel Maria GOMEZ ARGUELLO, Siamak ABEDINPOUR
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Patent number: 9935470Abstract: A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.Type: GrantFiled: October 27, 2015Date of Patent: April 3, 2018Assignee: Integrated Device Technology, Inc.Inventors: Rosario Pagano, Christopher Joseph Daffron, Angel Maria Gomez Arguello, Siamak Abedinpour
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Publication number: 20170117717Abstract: A system and method of wireless power transfer using a power converter with a bypass mode includes a power converter. The power converter includes a pulsed switch, a capacitor configured to supply a drive voltage to the pulsed switch, a first circuit configured to charge the capacitor when the power converter operates in a switched mode of operation, and, a second circuit configured to charge the capacitor when the power converter operates in a bypass mode of operation.Type: ApplicationFiled: October 27, 2015Publication date: April 27, 2017Inventors: Rosario PAGANO, Christopher Joseph DAFFRON, Angel Maria GOMEZ ARGUELLO, Siamak ABEDINPOUR
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Publication number: 20160294180Abstract: A system and method of over-voltage protection includes a switch coupled between a power source and a load, a detection circuit configured to detect an onset of an over-voltage event at the load; and a driver circuit coupled to the switch and the detection circuit. The driver circuit includes a boost sub-circuit that provides a low-resistance path for opening the switch in a boost mode, the boost mode being triggered by the onset of the over-voltage event and having a predetermined duration and a steady state sub-circuit that provides a high-resistance path for holding the switch open during steady state operation when the boost mode.Type: ApplicationFiled: April 1, 2016Publication date: October 6, 2016Inventors: Rosario PAGANO, Herman R. PAZ, Siamak ABEDINPOUR
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Patent number: 8278902Abstract: A switching power converter converts an input DC voltage to an output DC voltage using a switch to selectively connect an input DC voltage energy source. A switching controller controls the switch. A pulse width modulation centering signal is generated by a spread spectrum clock signal generator. An error amplifier of the switching controller generates an analog error signal based on a switching voltage measured after the switching of the switching power converter, the output voltage of the switching power converter, the pulse width modulation centering signal and a reference. A pulse width modulated signal generator generates the pulse width modulation signal to control the switch of the switching power converter based on the pulse width modulation centering signal and the analog error signal.Type: GrantFiled: July 15, 2009Date of Patent: October 2, 2012Assignee: Freescale Semiconductor, Inc.Inventors: Pallab Midya, Siamak Abedinpour, William J Roeckner
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Publication number: 20110012575Abstract: A switching power converter converts an input DC voltage to an output DC voltage using a switch to selectively connect an input DC voltage energy source. A switching controller controls the switch. A pulse width modulation centering signal is generated by a spread spectrum clock signal generator. An error amplifier of the switching controller generates an analog error signal based on a switching voltage measured after the switching of the switching power converter, the output voltage of the switching power converter, the pulse width modulation centering signal and a reference. A pulse width modulated signal generator generates the pulse width modulation signal to control the switch of the switching power converter based on the pulse width modulation centering signal and the analog error signal.Type: ApplicationFiled: July 15, 2009Publication date: January 20, 2011Applicant: FREESCALE SEMICONDUCTOR, INC.Inventors: Pallab Midya, Siamak Abedinpour, William J. Roeckner
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Patent number: 7372333Abstract: Embodiments of RF power amplifiers are disclosed that include switched-mode power amplifiers supplied by synchronous buck DC-DC converters. The switched-mode power amplifiers can be used to amplify a limited form of an RF input signal and the supply to the switched-mode power amplifier is varied in response to the envelope of the RF input signal. One embodiment includes a switched-mode power amplifier connected to a synchronous buck DC-DC converter.Type: GrantFiled: February 3, 2004Date of Patent: May 13, 2008Assignee: Arizona Board of Regents, acting for and on behalf of Arizona State UniversityInventors: Siamak Abedinpour, Sayfe Kiaei
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Patent number: 7218085Abstract: DC-DC converters are disclosed that can be integrated onto a semiconductor device. In one embodiment, the invention includes a first MOSFET and a second MOSFET, where the drain of the first MOSFET forms a common node with the drain of the second MOSFET. In addition, a controller is connected to the gates of each of the MOSFETS and a passive filter is connected between the common node and ground. A load is also connected between the common node and ground and feedback circuitry is connected between the common node and the controller.Type: GrantFiled: May 27, 2003Date of Patent: May 15, 2007Assignee: Arizona Board of RegentsInventors: Siamak Abedinpour, Sayfe Kiaei
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Publication number: 20060226909Abstract: Embodiments of RF power amplifiers are disclosed that include switched-mode power amplifiers supplied by synchrnous buck DC-DC converters. The switched-mode power amplifiers can be used to amplify a limited form of an RF input signal and the supply to the switched-mode power amplifier is varied in response to the envelope of the RF input signal. One embodiment includes a switched-mode power amplifier connected to a synchronous buck DC-DC converter.Type: ApplicationFiled: February 3, 2004Publication date: October 12, 2006Inventors: Siamak Abedinpour, Sayfe Kiaei
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Publication number: 20060091871Abstract: DC-DC converters are disclosed that can be integrated onto a semiconductor device. In one embodiment, the invention includes a first MOSFET and a second MOSFET, where the drain of the first MOSFET forms a common node with the drain of the second MOSFET. In addition, a controller is connected to the gates of each of the MOSFETS and a passive filter is connected between the common node and ground. A load is also connected between the common node and ground and feedback circuitry is connected between the common node and the controller.Type: ApplicationFiled: May 27, 2003Publication date: May 4, 2006Inventors: Siamak Abedinpour, Syafe Kiaei
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Patent number: 6791298Abstract: A monolithically formed battery charger may be fabricated as an integral part of a multifunctional integrated circuit or as independent monolithically formed integrated circuit. The monolithically formed battery charger includes at least one step-down converter having a given duty ratio coupled to a battery-terminal interface that provides a stepped-down output voltage and current that may be used to charge a rechargeable battery. The step-down converter includes one or more cascaded monolithically-formed synchronous-buck regulators operating at a frequency of at least one megahertz. Each regulator may include a capacitor, inductor, controller, switch, and rectifier. When cascaded, the high-side output node of a preceding synchronous-buck regulator is connected to the switch in a successive synchronous-buck regulator.Type: GrantFiled: November 5, 2002Date of Patent: September 14, 2004Assignee: Shakti Systems, Inc.Inventors: Krishna Shenai, Siamak Abedinpour
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Publication number: 20030090246Abstract: A direct current voltage converter in accordance with the invention includes a substantially static direct current voltage source, an inductor; a current-control switch coupled with, and between, the voltage source and the inductor, a step-up switch coupled with the inductor, and a current sense device coupled in series with the step-up switch and electrical ground. The converter also includes a capacitor for storing converted voltage that is coupled with, and between, electrical ground, and the inductor and the step-up switch through a device for controlling current flow direction. The converter further includes a first control circuit, which opens and closes the current-control switch based, at least in part, on an electrical current conducted through the current sense device, and a second control circuit, which opens and closes the step-up switch based, at least in part, on a voltage potential across the electrical load.Type: ApplicationFiled: November 5, 2002Publication date: May 15, 2003Inventors: Krishna Shenai, Siamak Abedinpour
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Publication number: 20030090237Abstract: A monolithically formed battery charger may be fabricated as an integral part of a multifunctional integrated circuit or as independent monolithically formed integrated circuit.Type: ApplicationFiled: November 5, 2002Publication date: May 15, 2003Inventors: Krishna Shenai, Siamak Abedinpour
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Publication number: 20030090244Abstract: A novel monolithic step-down dc-dc buck converter that uses two or more (“n”) parallel slices to achieve a high output current with a small filter capacitor is provided. Each of the n slices may be operated with a phase difference of 360°/n. Each of the converter slices may be based on a synchronous rectifier topology to avoid the excessive power losses introduced by the diode component of conventional step-down buck converters. Hysteretic control may be used (with or without pulse-width modulation and pulse-frequency modulation) to provide an internal gate-drive waveform without the need to provide a dedicated clock signal or oscillator circuit.Type: ApplicationFiled: November 5, 2002Publication date: May 15, 2003Inventors: Krishna Shenai, Siamak Abedinpour
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Publication number: 20030090245Abstract: A direct current voltage boost converter includes a substantially static direct current voltage source coupled with an inductor. The converter also includes a step-up switch coupled with the inductor, and a capacitor coupled with, and between, electrical ground, and the inductor and the step-up switch via a switching device for controlling current flow direction. The converter further includes a single control circuit coupled with the step-up switch, the switching device and an output terminal of the boost converter, wherein the control circuit opens and closes the step-up switch and the switching device substantially out of phase with each other. This out of phase switching effects voltage conversion and regulation based, at least in part, on a desired output voltage and an output voltage present on the output terminal of the boost converter.Type: ApplicationFiled: November 5, 2002Publication date: May 15, 2003Inventors: Krishna Shenai, Siamak Abedinpour