Electronic device and method of wireless power transfer therefor
First Claim
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1. An electronic device comprising:
- a frequency change circuit configured to produce a first signal of a frequency corresponding to at least one wireless power transfer scheme;
a duty cycle change circuit configured to produce a second signal of a duty cycle corresponding to the at least one wireless power transfer scheme; and
a control unit configured to control at least one of the frequency change circuit and the duty cycle change circuit according to the at least one wireless power transfer scheme,wherein the duty cycle change circuit includes a variable resistor, andwherein the duty cycle change circuit is further configured to;
receive a duty adjustment signal corresponding to the at least one wireless power transfer scheme from the control unit,adjust a resistance of the variable resistor according to the duty adjustment signal, andoutput the second signal.
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Abstract
An electronic device and method of wireless power transfer therefor are provided. The electronic device may include a frequency change circuit to produce a first signal of a frequency corresponding to at least one wireless power transfer scheme, a duty cycle change circuit to produce a second signal of a duty cycle corresponding to the at least one wireless power transfer scheme, and a control unit to control at least one of the frequency change circuit and the duty cycle change circuit according to the at least one wireless power transfer scheme. Various other embodiments are also possible.
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Citations
23 Claims
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1. An electronic device comprising:
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a frequency change circuit configured to produce a first signal of a frequency corresponding to at least one wireless power transfer scheme; a duty cycle change circuit configured to produce a second signal of a duty cycle corresponding to the at least one wireless power transfer scheme; and a control unit configured to control at least one of the frequency change circuit and the duty cycle change circuit according to the at least one wireless power transfer scheme, wherein the duty cycle change circuit includes a variable resistor, and wherein the duty cycle change circuit is further configured to; receive a duty adjustment signal corresponding to the at least one wireless power transfer scheme from the control unit, adjust a resistance of the variable resistor according to the duty adjustment signal, and output the second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic device comprising:
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a frequency change circuit; a 50% duty cycle check circuit a duty cycle change circuit; and a processor functionally connected to the frequency change circuit and the duty cycle change circuit, wherein the processor is configured to; select at least one wireless power transfer scheme, operate the frequency change circuit to change a frequency of a signal in conformance with the at least one wireless power transfer scheme, operate the duty cycle change circuit to change a duty cycle of the signal in conformance with the at least one wireless power transfer scheme, and transmit power with the frequency and duty cycle to an external electronic device, and wherein the processor is further configured to; check whether the duty cycle of the signal is 50 percent by use of the 50% duty cycle check circuit, and adjust a resistance of a variable resistor in the duty cycle change circuit in accordance with an output voltage of the 50% duty cycle check circuit. - View Dependent Claims (14, 15, 16, 17)
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18. A method of wireless power transmission for an electronic device, the method comprising:
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selecting at least one wireless power transfer scheme; changing a frequency of a signal in conformance with the at least one wireless power transfer scheme; changing a duty cycle of the signal in conformance with the at least one wireless power transfer scheme; and transmitting power with the frequency and duty cycle to an external electronic device, wherein the changing of the duty cycle comprises adjusting a resistance of a variable resistor. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification