Abstract:
Techniques for providing wired and wireless charging to a device are provided. An example of an apparatus for receiving power from a wired power supply and a wireless power supply according to the disclosure includes a wireless power receiver configured to receive power from the wireless power supply, a direct current input circuit configured to receive power from the wired power supply, a control circuit operably coupled to the wireless power receiver and the direct current input circuit and configured to determine a power transfer capability for each of the wired power supply and the wireless power supply, and select the wireless power receiver from the wireless power supply or with the direct current input circuit from the wired power supply to receive power based on the power transfer capabilities.
Abstract:
Embodiments include devices and methods for navigating an unmanned autonomous vehicle (UAV) based on a measured magnetic field vector and strength of a magnetic field emanated from a charging station. A processor of the UAV may navigate to the charging station using the magnetic field vector and strength. The processor may determine whether the UAV is substantially aligned with the charging station, and the processor may maneuver the UAV to approach the charging station using the magnetic field vector and strength in response to determining that the UAV is substantially aligned with the charging station. Maneuvering the UAV to approach the charging station using the magnetic field vector and strength may involve descending to a center of the charging station. The UAV may follow a specified route to and/or away from the charging station using the magnetic field vector and strength.
Abstract:
A wireless power transmitter system includes: a power delivery structure comprising power transmitting elements (power transmitting elements), each of which is configured to induce a field, and configured to adapt to an exterior shape of an entity that contains a receiver; a power circuit configured to provide power to the power transmitting elements selectively; and a controller configured to: determine an electrical characteristic, other than power transfer to the receiver, associated with actuating at least one of the power transmitting elements; determine at least one power transmitting element subset, based on the electrical characteristic, containing less than all, and at least one, of the power transmitting elements; select, based on power transferred to the receiver, one or more charging power transmitting elements to use to charge the receiver wirelessly; and cause the power circuit to provide power to the one or more charging power transmitting elements.
Abstract:
Techniques for wired and wireless charging of electronic devices are provided. An example of a method for charging a device according to the disclosure includes receiving a signal from a power source with an electronic circuit (500), such that the electronic circuit includes a synchronous rectifier comprising a first phase leg (502) and a second phase leg (504), utilizing the first phase leg to implement synchronous rectification and the second phase leg to implement a single phase buck converter when the signal is a wireless signal received from the power source (508), utilizing the first phase leg and the second phase leg to implement a multi-phase buck converter when the signal is received from a wired power source (506), and providing an output signal with the electronic circuit.
Abstract:
Certain aspects of the present disclosure relate to methods and apparatus for reconfiguring wireless power resonator. Certain aspects of the present disclosure provide a wireless power resonator. The wireless power resonator includes a first section. The wireless power resonator further includes a second section electrically coupled and physically coupled to the first section. The second section is configured to be movable with respect to the first section while remaining both electrically coupled and physically coupled to the first section to change an effective area of the wireless power resonator.
Abstract:
The present disclosure relates to multi-mode regulators. The multi- mode regulator (200) includes a first transistor (202) having a first terminal coupled to an input voltage (Vin) and a second terminal coupled to an output of the regulator, a second transistor (204) having a first terminal coupled to the second terminal of the first transistor and a second terminal coupled to a reference potential (214), pulse width modulation (PWM) control logic (206) having outputs coupled to gates of a first transistor and a second transistor, one or more error amplifiers (208a,...,n), and a mode switch (210) with a first terminal coupled to the gate of the first transistor and a second terminal coupled to the output of one of the one or more error amplifiers. By selectively configuring one or more components of the multi-mode regulator, the regulator may operate according to either a linear regulation mode or a switching regulation mode.
Abstract:
Certain aspects of the present disclosure relate to methods and apparatus for a voltage controlled charge pump and battery charger. Certain aspects of the present disclosure provide a method for operating a voltage controlled charge pump. The method includes selectively opening and closing a plurality of switches based on a voltage on a feedback path. The plurality of switches are coupled between a voltage input terminal and a voltage output terminal. A first capacitor is coupled between at least a first switch and a second switch of the plurality of switches. A second capacitor is coupled to the voltage output terminal. The feedback path is coupled to at least one of the voltage output terminal, the first capacitor, and the second capacitor.
Abstract:
Techniques for charger-device pairing for recharge warnings are described. In one or more implementations, a battery (108) of a device (102) is determined to require charging based on a state of charge of the battery (108). In response to this determination, a message is communicated via a local network (106) from the device to a charger (104) that was previously paired with the device (102). The message includes a request for the charger (104) to generate a first alert indicating that the charger is available to charge the battery of the device. In addition, the device (102) provides a second alert indicating that the battery (108) of the device requires charging.