Method for generating load of wireless power receiver in wireless charging system and wireless power receiver
First Claim
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1. A method for generating a load variation of a wireless power receiver (PRU) for detecting the PRU in a wireless charging system, the method comprising:
- receiving a wireless power signal from a wireless power transmitter (PTU);
rectifying the received wireless power signal into a direct current (DC) signal;
converting, by a DC/DC converter, the DC signal to a first power for charging a rechargeable battery;
regulating, by a linear regulator, the first power to a second power for a controller; and
generating the load variation for detecting the PRU by adjusting an amount of the second power,wherein adjusting the amount of the second power comprises the controller controlling a switch, andwherein a resistor is connected between the switch and the linear regulator.
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Abstract
A wireless power receiver (PRU) and a method for generating a load of the PRU for detecting the PRU in a wireless charging system are provided. The method includes receiving a wireless power signal from a wireless power transmitter (PTU), rectifying the received wireless power signal into a direct current (DC) signal, and generating a load for detecting the PRU by controlling a current flowing across a resistor connected in parallel with a load charged with power of the DC signal.
20 Citations
13 Claims
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1. A method for generating a load variation of a wireless power receiver (PRU) for detecting the PRU in a wireless charging system, the method comprising:
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receiving a wireless power signal from a wireless power transmitter (PTU); rectifying the received wireless power signal into a direct current (DC) signal; converting, by a DC/DC converter, the DC signal to a first power for charging a rechargeable battery; regulating, by a linear regulator, the first power to a second power for a controller; and generating the load variation for detecting the PRU by adjusting an amount of the second power, wherein adjusting the amount of the second power comprises the controller controlling a switch, and wherein a resistor is connected between the switch and the linear regulator. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless power receiver (PRU) that generates a load variation in a wireless charging system, the PRU comprising:
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a power receiver configured to receive a wireless power signal from a wireless power transmitter (PTU); a rectifier configured to rectify the wireless power signal received from the power receiver into a direct current (DC) signal; a DC/DC converter configured to convert the DC signal to a first power for charging a rechargeable battery; a linear regulator configured to regulate the first power to a second power for a controller; a switch configured to adjust an amount of the second power; and a resistor connected between the switch and the linear regulator, wherein the load variation for detecting the PRU is generated by the controller controlling the switch to adjust the amount of the second power. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification