CHARGER AND POWER DELIVERY CONTROL CHIP AND CHARGING METHOD THEREOF
First Claim
1. A charger adapted to charge an electronic device via a cable, wherein an end of the cable provides a target charging voltage to the electronic device via a first connector and the other end of the cable is coupled to the charger via a second connector, the charger comprising:
- an AC/DC conversion circuit coupled to a power supply bus of the cable and converting an AC voltage into a DC voltage to provide a charging voltage and a charging current; and
a power delivery control chip calculating a first equivalent resistance according to a first voltage sensing signal provided from a first chip of the first connector, a current charging voltage, and a current charging current, and adjusting the charging voltage provided by the AC/DC conversion circuit according to the first equivalent resistance, the current charging current, and the target charging voltage, wherein the first equivalent resistance is a resistance corresponding to a section on the power supply bus between the first chip and the charger.
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Accused Products
Abstract
A charger and a power delivery control chip and a charging method thereof are provided. Resistance values of equivalent resistances corresponding to a power supply bus are calculated according to a charging current and voltage sensing signals respectively provided by chips of a first connector and a second connector. A charging voltage supplied to the power supply bus is adjusted according to a target charging voltage, a current charging current, and variations of the resistance values of the equivalent resistances corresponding to the power supply bus.
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Citations
36 Claims
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1. A charger adapted to charge an electronic device via a cable, wherein an end of the cable provides a target charging voltage to the electronic device via a first connector and the other end of the cable is coupled to the charger via a second connector, the charger comprising:
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an AC/DC conversion circuit coupled to a power supply bus of the cable and converting an AC voltage into a DC voltage to provide a charging voltage and a charging current; and a power delivery control chip calculating a first equivalent resistance according to a first voltage sensing signal provided from a first chip of the first connector, a current charging voltage, and a current charging current, and adjusting the charging voltage provided by the AC/DC conversion circuit according to the first equivalent resistance, the current charging current, and the target charging voltage, wherein the first equivalent resistance is a resistance corresponding to a section on the power supply bus between the first chip and the charger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A charging method of a charger adapted to charge an electronic device via a cable, wherein an end the cable provides a target charging voltage to the electronic device via a first connector and the other end of the cable is coupled to the charger via a second connector, the charging method of the charger comprising:
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converting an AC voltage into a DC voltage to provide a charging voltage and a charging current; calculating a first equivalent resistance according to a first voltage sensing signal provided from a first chip of the first connector, a current charging voltage, and a current charging current; and adjusting the charging voltage according to the first equivalent resistance, the current charging current, and the target charging voltage, wherein the first equivalent resistance is a resistance corresponding to a section on a power supply bus between the first chip and the charger. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A power delivery control chip disposed in a charger adapted to charge an electronic device via a cable, wherein an end the cable provides a target charging voltage to the electronic device via a first connector and the other end of the cable is coupled to the charger via a second connector, the power delivery control chip being configured to:
calculate a first equivalent resistance according to a first voltage sensing signal provided from a first chip of the first connector, a current charging voltage, and a current charging current, and adjust the charging voltage provided by the charger according to the first equivalent resistance, the current charging current, and the target charging voltage, wherein the first equivalent resistance is a resistance corresponding to a section on a power supply bus between the first chip and the charger. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
Specification