ADAPTIVE WIRELESS POWER TRANSFER SYSTEM AND METHOD
First Claim
1. A system comprising:
- a monitoring function to monitor control parameters and an input source that supplies power to a wireless power transmitter, wherein the wireless power transmitter operates with a wireless power receiver to supply a charging current to a load; and
a controller configured to receive the control parameters from the monitoring function and to control an adjustable operating point for the wireless power transmitter which controls the charging current delivered to the load via the wireless power receiver, wherein the controller commands a maximum power operating point for the wireless power transmitter when the input source is detected at or above a predetermined threshold and commands a reduced power operating point for the wireless power transmitter when the input source to the wireless power transmitter is detected below the predetermined threshold.
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Accused Products
Abstract
A system for wireless power transfer is provided. The system includes a monitoring function to monitor control parameters and an input source that supplies power to a wireless power transmitter, wherein the wireless power transmitter operates with a wireless power receiver to supply a charging current to a load. A controller can be configured to receive the control parameters from the monitoring function and to control an adjustable operating point for the wireless power transmitter which controls the charging current delivered to the load via the wireless power receiver, wherein the controller commands a maximum power operating point for the wireless power transmitter when the input source is detected at or above a predetermined threshold and commands a reduced power operating point for the wireless power transmitter when the input source to the wireless power transmitter is detected below the predetermined threshold.
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Citations
20 Claims
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1. A system comprising:
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a monitoring function to monitor control parameters and an input source that supplies power to a wireless power transmitter, wherein the wireless power transmitter operates with a wireless power receiver to supply a charging current to a load; and a controller configured to receive the control parameters from the monitoring function and to control an adjustable operating point for the wireless power transmitter which controls the charging current delivered to the load via the wireless power receiver, wherein the controller commands a maximum power operating point for the wireless power transmitter when the input source is detected at or above a predetermined threshold and commands a reduced power operating point for the wireless power transmitter when the input source to the wireless power transmitter is detected below the predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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monitoring a control parameter, via a processor, for a variable input power source that supplies power in a wireless power transfer system; determining, by the processor, input power capabilities of the variable input power source by comparing the control parameter to a threshold; and adjusting a power set point for the wireless power transfer system, by the processor, based on the determined input power capabilities of the variable input power source, wherein the power set point is reduced when the variable input power source is determined to have limited power capabilities. - View Dependent Claims (13, 14, 15, 16)
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17. An integrated circuit comprising:
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a controller configured to monitor control parameters from a wireless power system and to monitor an input source to control an adjustable operating point for the wireless power system to control a charging current delivered to a load, wherein the controller commands a maximum power operating point for the wireless power system when the input source is detected above a predetermined threshold and commands a reduced power operating point for the wireless power system when the input source is detected below the predetermined threshold; an input circuit to provide the control parameters to the controller; and a lower power circuit to indicate the input source has a reduced power delivery capacity. - View Dependent Claims (18, 19, 20)
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Specification