Wireless power transmitter and method for controlling same
First Claim
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1. A method for controlling a wireless power transmitter that transmits charging power to a wireless power receiver, the method comprising:
- entering a latch fault mode in response to latch fault mode entry conditions; and
after entering the latch fault mode, periodically applying a first power having a first power value to a resonant circuit, wherein the first power is for detecting a change in impedance of the wireless power transmitter caused by removal of the wireless power receiver.
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Abstract
A method for controlling a wireless power transmitter that transmits charging power to a wireless power receiver is provided. The method includes driving the wireless power transmitter; determining whether latch fault mode entry conditions are met, in which the wireless power transmitter is allowed to enter a latch fault mode in which the wireless power transmitter periodically applies first power having a first power value in a first cycle; and if the latch fault mode entry conditions are met, periodically applying the first power in the first cycle.
18 Citations
23 Claims
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1. A method for controlling a wireless power transmitter that transmits charging power to a wireless power receiver, the method comprising:
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entering a latch fault mode in response to latch fault mode entry conditions; and after entering the latch fault mode, periodically applying a first power having a first power value to a resonant circuit, wherein the first power is for detecting a change in impedance of the wireless power transmitter caused by removal of the wireless power receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless power transmitter for transmitting charging power to a wireless power receiver, the wireless power transmitter comprising:
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a resonant circuit configured to transmit the charging power to the wireless power receiver; and a controller configured to; enter a latch fault mode in response to latch fault mode entry conditions, and after entering the latch fault mode, periodically apply first power having a first power value to the resonant circuit, wherein the first power is for detecting a change in impedance of the wireless power transmitter caused by removal of the wireless power receiver. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification