System, device, and method for controlling a power inverter
First Claim
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1. A device comprising:
- circuitry configured todetermine a load impedance for at least one power conversion device,control a dead-time of one or more switching stages of the at least one power conversion device based on the load impedance,control a tunable matching network based on the load impedance and the dead-time of the one or more switching stages, andmodify the dead-time of the one or more switching stages including a plurality of switches based on a comparator output indicating an amount of body diode conduction of the plurality of switches.
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Abstract
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.
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Citations
20 Claims
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1. A device comprising:
circuitry configured to determine a load impedance for at least one power conversion device, control a dead-time of one or more switching stages of the at least one power conversion device based on the load impedance, control a tunable matching network based on the load impedance and the dead-time of the one or more switching stages, and modify the dead-time of the one or more switching stages including a plurality of switches based on a comparator output indicating an amount of body diode conduction of the plurality of switches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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determining a reflected impedance from a receiver coil at a coil of a wireless power transmitter; controlling a dead-time of one or more switching stages of at least one power conversion device of the wireless power transmitter based on the reflected impedance; controlling an impedance of a tunable matching network based on the reflected impedance and the dead-time of the one or more switching stages; and modifying the dead-time of the one or more switching stages including a plurality of switches based on a comparator output indicating an amount of body diode conduction of the plurality of switches.
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20. A wireless power transmitter comprising:
circuitry configured to determine a reflected impedance from a receiver coil at a transmitter coil, control a dead-time of one or more switching stages of a power conversion device based on the reflected impedance, control a tunable impedance of a matching network at the transmitter based on the reflected impedance and the dead-time of the one or more switching stages, and modify the dead-time of the one or more switching stages including a plurality of switches based on a comparator output indicating an amount of body diode conduction of the plurality of switches.
Specification