Methods and apparatus for efficient wireless power transfer
First Claim
1. An apparatus for receiving wireless power, comprising:
- a power receiving circuit configured to couple to a magnetic field generated by a power transmitter during an alignment check; and
a processing circuit configured to;
measure, as a first operation point of the power receiving circuit, a short circuit current of the power receiving circuit while the magnetic field is generated by the power transmitter at an alignment current;
identify a second operation point of the power transmitter based on the magnetic field during the alignment check, andadjust a duty cycle of an active component of the power receiving circuit based at least in part on one of the first operation point and second operation point.
2 Assignments
0 Petitions
Accused Products
Abstract
One aspect of the disclosure provides an apparatus for receiving wireless power. The apparatus includes a power receiving circuit and a processing circuit. The power receiving circuit is configured to couple to a magnetic field generated by a power transmitter during an alignment check. The processing circuit is configured to identify a first operation point of the power receiving circuit and a second operation point of the power transmitter based on the magnetic field during the alignment check. The processing circuit is further configured to adjust a duty cycle of an active component of the power receiving circuit based at least in part on one of the identified first operation point and second operation point.
8 Citations
21 Claims
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1. An apparatus for receiving wireless power, comprising:
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a power receiving circuit configured to couple to a magnetic field generated by a power transmitter during an alignment check; and a processing circuit configured to; measure, as a first operation point of the power receiving circuit, a short circuit current of the power receiving circuit while the magnetic field is generated by the power transmitter at an alignment current; identify a second operation point of the power transmitter based on the magnetic field during the alignment check, and adjust a duty cycle of an active component of the power receiving circuit based at least in part on one of the first operation point and second operation point. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of receiving wireless power at a power receiving circuit, the method comprising:
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receiving power from a magnetic field generated by a power transmitter during an alignment check; measuring, as a first operation point of the power receiving circuit, a short circuit current of the power receiving circuit while the magnetic field is generated by the power transmitter at an alignment current; identifying a second operation point of the power transmitter based on the magnetic field during the alignment check; and adjusting a duty cycle of an active component of the power receiving circuit based at least in part on one of the first operation point and second operation point. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for receiving wireless power, the apparatus comprising:
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means for receiving power from a magnetic field generated by a power transmitter during an alignment check; means for measuring, as a first operation point of the means for receiving power, a short circuit current of the means for receiving power while the magnetic field is generated by the power transmitter at an alignment current; means for identifying a second operation point of the power transmitter based on the magnetic field during the alignment check; and means for adjusting a duty cycle of an active component of the means for receiving power based at least in part on one of the first operation point and second operation point. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification