MULTIMODE WIRELESS POWER TRANSMITTERS AND RELATED METHODS
First Claim
1. A wireless power transmitter, comprising:
- a bridge inverter configured to receive a DC power signal and generate an AC power signal according to an operating frequency;
a resonant tank configured to receive the AC power signal and generate an electromagnetic field responsive thereto; and
control logic configured to cause the resonant tank to reconfigure and adjust its resonant frequency for a particular receiver type of a wireless power receiver with which a mutual inductance relationship is desired.
3 Assignments
0 Petitions
Accused Products
Abstract
A wireless power transmitter comprises a bridge inverter configured to receive a DC power signal and generate an AC power signal according to an operating frequency, a resonant tank configured to receive the AC power signal and generate an electromagnetic field responsive thereto, and control logic configured to cause the resonant tank to reconfigure and adjust its resonant frequency for a particular receiver type of a wireless power receiver with which a mutual inductance relationship is desired. A method comprises determining a receiver type for a wireless power receiver with which it is desired to establish a mutual inductance relationship for wireless power transfer, and generating a wireless power signal with a wireless power transmitter having an operating frequency and resonant tank that is adjusted for a particular receiver type.
51 Citations
20 Claims
-
1. A wireless power transmitter, comprising:
-
a bridge inverter configured to receive a DC power signal and generate an AC power signal according to an operating frequency; a resonant tank configured to receive the AC power signal and generate an electromagnetic field responsive thereto; and control logic configured to cause the resonant tank to reconfigure and adjust its resonant frequency for a particular receiver type of a wireless power receiver with which a mutual inductance relationship is desired. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A wireless power apparatus, comprising:
-
a bridge inverter configured to generate an AC power signal responsive to a DC power signal; a resonant tank configured to generate an electromagnetic field having an operating frequency responsive to the AC power signal; and control logic configured to operate a wireless power transmitter as a multimode transmitter having a first mode for wireless power transfer with a first receiver type and a second mode for wireless power transfer with a second receiver type, wherein the resonant tank is configured to exhibit a different resonant frequency for each of the first mode and the second mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A method for operating a multimode wireless power transmitter, the method comprising:
-
determining a receiver type for a wireless power receiver with which it is desired to establish a mutual inductance relationship for wireless power transfer; and generating a wireless power signal with a wireless power transmitter having an operating frequency and resonant tank that is adjusted for a particular receiver type. - View Dependent Claims (18, 19, 20)
-
Specification