Wireless power receiver and power control method thereof
First Claim
1. A method of controlling power in a wireless power receiver, the method comprising:
- receiving an AC power via a reception coil;
rectifying the AC power to a DC power; and
controlling the DC power applied to a load by comparing the DC power with a threshold voltage,wherein the controlling the DC power includes;
measuring a voltage of the DC power,allowing the load to enter a charging mode by transferring the DC power to the load when the measured voltage is equal to or greater than a first threshold voltage,maintaining the load in the charging mode when the measured voltage is equal to or greater than a second threshold voltage in a state of the charging mode, andblocking the DC power to the load when the measured voltage is less than the second threshold voltage.
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Abstract
A method of controlling power in a wireless power receiver, the method including receiving an AC power via a reception coil, rectifying the AC power to a DC power and controlling the DC power applied to a load by comparing the DC power with a threshold voltage, wherein the controlling the DC power includes measuring a voltage of the DC power, allowing the load to enter a charging mode by transferring the DC power to the load when the measured voltage is equal to or greater than a first threshold voltage, maintaining the load in the charging mode when the measured voltage is equal to or greater than a second threshold voltage in a state of the charging mode, and blocking the DC power to the load when the measured voltage is less than the second threshold voltage.
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Citations
20 Claims
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1. A method of controlling power in a wireless power receiver, the method comprising:
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receiving an AC power via a reception coil; rectifying the AC power to a DC power; and controlling the DC power applied to a load by comparing the DC power with a threshold voltage, wherein the controlling the DC power includes; measuring a voltage of the DC power, allowing the load to enter a charging mode by transferring the DC power to the load when the measured voltage is equal to or greater than a first threshold voltage, maintaining the load in the charging mode when the measured voltage is equal to or greater than a second threshold voltage in a state of the charging mode, and blocking the DC power to the load when the measured voltage is less than the second threshold voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless power receiver comprising:
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a reception coil configured to output an AC power; a rectifier configured to rectify the AC power to a DC power; a DC-DC converter configured to adjust the DC power and to transfer the adjusted DC power to a load; and a controller configured to; measure a voltage of the DC power, allow the load to enter a charging mode by transferring the adjusted DC power to the load when the measured voltage is equal to or greater than a first threshold voltage, maintain the load in the charging mode when the measured voltage is equal to or greater than a second threshold voltage in a state of the charging mode, and block the adjusted DC power to the load when the measured voltage is less than the second threshold voltage. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification