Patents by Inventor Marius Ionel VLADAN
Marius Ionel VLADAN 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: 10439425Abstract: Aspects of the subject disclosure may include, for example, a wireless power receiver configured to receive a wireless power signal from a power transmitting unit. A wireless radio unit is configured to communicate with the power transmitting unit. A controllable rectifier circuit is configured to rectify the wireless power signal. The controllable rectifier circuit can include a rectifier configured to generate a rectified voltage from the wireless power signal, based on switch control signals. A rectifier control circuit is configured to generate the switch control signals and to generate first control data that indicates a first rectifier duty cycle of the switch control signals. The wireless radio unit sends the first control data to the power transmitting unit. Other embodiments are disclosed.Type: GrantFiled: April 25, 2018Date of Patent: October 8, 2019Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITEDInventors: Vadim Bishtein, Marius Ionel Vladan
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Patent number: 10243407Abstract: A wireless power transmitter includes circuitry configured to determine a reflected impedance from a receiver coil at a transmitter coil and control a dead-time of one or more switching stages of a power conversion device based on the reflected impedance. A tunable matching network at the transmitter is controlled based on the reflected impedance and the dead-time of the one or more switching stages.Type: GrantFiled: October 31, 2016Date of Patent: March 26, 2019Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITEDInventors: Marius Ionel Vladan, Steve Hoste, Jean-Francois Koleck
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Publication number: 20180309316Abstract: Aspects of the subject disclosure may include, for example, a wireless power receiver configured to receive a wireless power signal from a power transmitting unit. A wireless radio unit is configured to communicate with the power transmitting unit. A controllable rectifier circuit is configured to rectify the wireless power signal. The controllable rectifier circuit can include a rectifier configured to generate a rectified voltage from the wireless power signal, based on switch control signals. A rectifier control circuit is configured to generate the switch control signals and to generate first control data that indicates a first rectifier duty cycle of the switch control signals. The wireless radio unit sends the first control data to the power transmitting unit. Other embodiments are disclosed.Type: ApplicationFiled: April 25, 2018Publication date: October 25, 2018Applicant: Avago Technologies General IP (Singapore) Ptd. Ltd.Inventors: Vadim Bishtein, Marius Ionel Vladan
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Patent number: 9985462Abstract: Aspects of the subject disclosure may include, for example, a wireless power receiver configured to receive a wireless power signal from a power transmitting unit. A wireless radio unit is configured to communicate with the power transmitting unit. A controllable rectifier circuit is configured to rectify the wireless power signal. The controllable rectifier circuit can include a rectifier configured to generate a rectified voltage from the wireless power signal, based on switch control signals. A rectifier control circuit is configured to generate the switch control signals and to generate first control data that indicates a first rectifier duty cycle of the switch control signals. The wireless radio unit sends the first control data to the power transmitting unit. Other embodiments are disclosed.Type: GrantFiled: December 28, 2015Date of Patent: May 29, 2018Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.Inventors: Vadim Bishtein, Marius Ionel Vladan
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Publication number: 20180097400Abstract: A wireless power transmitter includes circuitry configured to determine a reflected impedance from a receiver coil at a transmitter coil and control a dead-time of one or more switching stages of a power conversion device based on the reflected impedance. A tunable matching network at the transmitter is controlled based on the reflected impedance and the dead-time of the one or more switching stages.Type: ApplicationFiled: October 31, 2016Publication date: April 5, 2018Applicant: BROADCOM CORPORATIONInventors: Marius Ionel VLADAN, Steve HOSTE, Jean-Francois KOLECK
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Patent number: 9912171Abstract: Aspects of the subject disclosure may include, for example, a wireless power transmitter that includes a coil assembly configured to transmit a power signal to a power receiving unit of at least one wireless power client. The coil assembly includes a first coil and a second coil configured to generate the power signal via a combined magnetic field. A first driver is configured to generate a first current signal on the first coil. A second driver is configured to generate a second current signal on the second coil at a first controllable phase relative to the first current signal to control the combined magnetic field. Other embodiments are disclosed.Type: GrantFiled: July 2, 2015Date of Patent: March 6, 2018Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTDInventor: Marius Ionel Vladan
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Patent number: 9654009Abstract: A power converter is described herein. The power converter may be configured to enable a high-side switch when a resonating voltage at a switching net coupled between the high-side switch and a low-side switch reaches a maximum voltage while the power converter operates in a discontinuous current mode. The power converter may sample the resonating voltage at the switching net at a time when the high-side switch is enabled and compare the sampled voltage with a previously-sampled voltage of the switching net. A frequency of an oscillating signal that drives the activation of the high-side switch is periodically adjusted based on the comparison, which causes the high-side switch to be enabled at different times with respect to the resonating voltage. The frequency of the oscillating signal is continuously adjusted such that the high-side switch is enabled at time(s) where the resonating voltage reaches (or is near) its maximum voltage.Type: GrantFiled: December 18, 2014Date of Patent: May 16, 2017Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventor: Marius Ionel Vladan
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Publication number: 20160365737Abstract: Aspects of the subject disclosure may include, for example, a wireless power transmitter that includes a coil assembly configured to transmit a power signal to a power receiving unit of at least one wireless power client. The coil assembly includes a first coil and a second coil configured to generate the power signal via a combined magnetic field. A first driver is configured to generate a first current signal on the first coil. A second driver is configured to generate a second current signal on the second coil at a first controllable phase relative to the first current signal to control the combined magnetic field. Other embodiments are disclosed.Type: ApplicationFiled: July 2, 2015Publication date: December 15, 2016Applicant: BROADCOM CORPORATIONInventor: Marius Ionel Vladan
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Patent number: 9438430Abstract: Systems and methods of measuring current in a power over Ethernet (PoE) system are provided. The PoE system includes an integrated circuit component having a controller, an internal transistor, a replica transistor, and an external transistor. Current in the system can be indirectly measured by enabling and disabling the transistors in known ways and then measuring the current through the replica transistor. The actual current in the system can be calculated based on the measured currents, thereby allowing for a PoE system that is capable of measuring current without a resistor in series with the external transistor.Type: GrantFiled: December 23, 2011Date of Patent: September 6, 2016Assignee: Broadcom CorporationInventor: Marius Ionel Vladan
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Publication number: 20160164410Abstract: A power converter is described herein. The power converter may be configured to enable a high-side switch when a resonating voltage at a switching net coupled between the high-side switch and a low-side switch reaches a maximum voltage while the power converter operates in a discontinuous current mode. The power converter may sample the resonating voltage at the switching net at a time when the high-side switch is enabled and compare the sampled voltage with a previously-sampled voltage of the switching net. A frequency of an oscillating signal that drives the activation of the high-side switch is periodically adjusted based on the comparison, which causes the high-side switch to be enabled at different times with respect to the resonating voltage. The frequency of the oscillating signal is continuously adjusted such that the high-side switch is enabled at time(s) where the resonating voltage reaches (or is near) its maximum voltage.Type: ApplicationFiled: December 18, 2014Publication date: June 9, 2016Inventor: Marius Ionel Vladan
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Publication number: 20160111894Abstract: Aspects of the subject disclosure may include, for example, a wireless power receiver configured to receive a wireless power signal from a power transmitting unit. A wireless radio unit is configured to communicate with the power transmitting unit. A controllable rectifier circuit is configured to rectify the wireless power signal. The controllable rectifier circuit can include a rectifier configured to generate a rectified voltage from the wireless power signal, based on switch control signals. A rectifier control circuit is configured to generate the switch control signals and to generate first control data that indicates a first rectifier duty cycle of the switch control signals. The wireless radio unit sends the first control data to the power transmitting unit. Other embodiments are disclosed.Type: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Applicant: BROADCOM CORPORATIONInventors: Vadim Bishtein, Marius Ionel Vladan
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Publication number: 20130166236Abstract: Systems and methods of measuring current in a power over Ethernet (PoE) system are provided. The PoE system includes an integrated circuit component having a controller, an internal transistor, a replica transistor, and an external transistor. Current in the system can be indirectly measured by enabling and disabling the transistors in known ways and then measuring the current through the replica transistor. The actual current in the system can be calculated based on the measured currents, thereby allowing for a PoE system that is capable of measuring current without a resistor in series with the external transistor.Type: ApplicationFiled: December 23, 2011Publication date: June 27, 2013Applicant: Broadcom CorporationInventor: Marius Ionel VLADAN