Avago Technologies International Sales Pte. Limited

Avago Technologies General IP (singapore) Pte. Ltd.

Broadcom Corporation

Vadim Bishtein

John S Walley

Ryan Michael Desrosiers

Angel Arturo Polo

Mark David Rutherford

Yasantha N Rajakarunanayake

Reinier Van Der Lee

Marius Ionel Vladan

Walter G Soto

Walid Nabhane

Kerry Thompson

Eric Martin Hayes

Lionel Maurice Federspiel

Christopher Adrain Den Haan

Stephen Douglas Cook

Aspects of the subject disclosure may include, for example, a power receiving unit having a wireless power receiver that receives a wireless power signal from a power transmitting unit. A rectifier circuit rectifies the wireless power signal to generate a rectified power signal in response thereto for charging a battery. A first wireless radio unit exchanges control data with a second wireless radio unit of the power transmitting unit via a wireless control channel, wherein the exchange of control data facilitates establishment of the wireless control channel, establishment of a charging session between the power receiving unit and the power transmitting unit, and control of the charging session between the power receiving unit and the power transmitting unit.

Wireless communication device and power receiving unit with wireless control channel and methods for use therewith

In various embodiments, a power transmitting device includes a wireless power generator configured to generate a wireless power signal. A transmit resonator is configured to transmit the wireless power signal via a transmit magnetic field to a power receiving unit. The transmit resonator includes a transmit coil configured to generate that transmit magnetic field in response to the wireless power signal. At least one variable magnetic element is configured to adjust at least one property of the transmit coil by varying a reluctance of the at least one variable magnetic element in response to at least one control signal. A processing device is configured to generate the at least one control signal to select the reluctance corresponding to the at least one property of the transmit coil.

Power transmitting unit with adjustable field and methods for use therewith

A wireless power transfer (WPT) receiver circuit includes a receive coil to couple to a transmit coil of a WPT transmitter circuit. A rectifier is coupled to the receive coil to generate a rectified voltage. The rectifier comprises a bridge rectifier circuit including a first set of switching elements. A load modulation circuit facilitates communication between the WPT receiver circuit and the WPT transmitter circuit. The load modulation circuit includes a single modulation capacitor and one or more modulation switching elements. At least one node of one of the modulation switching elements is connected to an input node of the rectifier.

Wireless power transfer load modulation enhancement

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.

Power transmitting unit and power receiving unit with control data communication and methods for use therewith

A wireless power transfer system is disclosed that includes a power station and a chargeable device. The power station transmits discovery beacons in order to detect a chargeable device within its vicinity using any available communication protocols and/or standards. Once a device is discovered, the power station can perform coil selection with the device in order to select preferred coils for power transfer. In addition, the chargeable device is capable of detecting the beacon signal and providing a response to notify the power station of its presence. The chargeable device is capable of performing its own coil selection for further optimization and includes various assistance functionality to aid a user in optimizing a connection with the power station.

Power receiving device having device discovery and power transfer capabilities

Aspects of the subject disclosure may include, for example, a power receiving unit having a wireless power receiver configured to receive a wireless power signal from a power transmitting unit. A rectifier includes a plurality of switching circuits configured to generate a rectified voltage from the wireless power signal, based on switch control signals that include a switch-on signal and a switch-off signal for corresponding ones of the plurality of switching circuits. A rectifier control circuit generates the switch control signals based on predicted switching delays. Other embodiments are disclosed.

Wireless communication device and power receiving unit with switching prediction and methods for use therewith

A voltage dedicated charger apparatus includes an AC-to-DC converter circuit, a pair of switches, and a controller block. The AC-to-DC converter circuit converts an AC input voltage to a DC output voltage. The pair of switches is operable to isolate a pair of data ports from the AC-to-DC converter circuit. The pair of data ports includes a DP port and a DN port. The controller block includes a monitor circuit, a transceiver, and a control circuit. The monitor circuit monitors the DP and DN ports of the apparatus. The transceiver receives one or more messages form a charge-receiving device and communicate data to the charge-receiving device. The control circuit controls operation of the pair of switches based on a signal from the monitor circuit.

Smart voltage dedicated charger system

A wireless power transfer system is described that includes a power station and a chargeable device. The power station transmits discovery beacons in order to detect a chargeable device within its vicinity using any available communication protocols and/or standards. Once a device is discovered, the power station can perform coil selection with the device in order to select preferred coils for power transfer. In addition, the chargeable device is capable of detecting the beacon signal and providing a response to notify the power station of its presence. The chargeable device is capable of performing its own coil selection for further optimization and includes various assistance functionality to aid a user in optimizing a connection with the power station.

Power transmitting device having device discovery and power transfer capabilities

A power management system that can include an application processor and a power management unit (PMU). The PMU can generate a regulated output voltage based on control signals generated by a switch control module of the application processor. The control signals can be determined based on a comparison of monitored voltages within the application processor and a generated reference voltage. The reference voltage can be generated based on fed back signals corresponding to the control signals. The application processor and the PMU can be formed utilizing different size manufacturing process technologies. For example, the PMU can be formed utilizing a larger size manufacturing process technology than the application processor.

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Sunnyvale, CA, United States of America

Vadim Bishtein