Battery charging circuitry having supply current regulation
First Claim
1. Circuitry for recharging a battery from a power source, wherein said power source provides power characterized by a plurality of parameters, at least one of said plurality of parameters having a predetermined limit, the circuitry comprising:
- an input for receiving power from the power source;
an output for delivering power to the battery;
sensing circuitry foe monitoring the at least one parameters; and
regulating circuitry, coupled to the input, the output, and the sensing circuitry, for regulating the voltage or current at the output of the battery charging circuitry responsive to the monitored parameter.
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Accused Products
Abstract
A power supply is disclosed for use in battery powered electronic devices. The power supply includes a power source which supplies power to the electronic device itself as well as to battery charging circuitry integral to the power supply. The battery charging circuitry monitors an output current, or other parameter, of the power source output. Feedback circuitry regulates the output of the battery charging circuitry so that output current, or other parameter of the power source output, is kept within predetermined limits.
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Citations
20 Claims
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1. Circuitry for recharging a battery from a power source, wherein said power source provides power characterized by a plurality of parameters, at least one of said plurality of parameters having a predetermined limit, the circuitry comprising:
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an input for receiving power from the power source; an output for delivering power to the battery; sensing circuitry foe monitoring the at least one parameters; and regulating circuitry, coupled to the input, the output, and the sensing circuitry, for regulating the voltage or current at the output of the battery charging circuitry responsive to the monitored parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of recharging a battery from a power source providing power characterized by a plurality of parameters, at least one of said plurality of parameters having a predetermined limit, the method comprising:
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providing battery charging circuitry having an input for receiving power from the power source, and an output for coupling to a battery; monitoring the at least one parameter; and regulating the battery charging circuitry so that the monitored parameter does not substantially violate the predetermined limit. - View Dependent Claims (9, 10, 11, 12)
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13. Circuitry for recharging a battery from a source of power characterized by a plurality of parameters, wherein at least one of said plurality of parameters has a predetermined limit, the circuitry comprising:
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input means for receiving power from the power source; output means for delivering power to a battery; sensing means for monitoring the at least one parameter; and regulating means, coupled to the input, the output, and the sensing circuitry, for regulating the battery charging circuitry responsive to the monitored parameter. - View Dependent Claims (14, 15, 16)
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17. Circuitry for recharging a battery from a power source having an output characterized by a plurality of parameters, the circuitry comprising:
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a power converter, having an input coupled to an output of the power source, and an output adapted to be coupled to the battery, the power converter converting power provided by the power source to a form suitable for recharging the battery; first feedback circuitry, coupled to the power converter, for controlling the power converter responsive to a voltage at the output of the power converter; second feedback circuitry, coupled to the power converter, for controlling the power converter responsive to a current at the output of the power converter; and third feedback circuitry, coupled to the power source and to the power converter, for controlling the power converter responsive to a predetermined one of the plurality of parameters. - View Dependent Claims (18, 19)
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20. Power supply circuitry for a portable electronic device, comprising:
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a first node adapted to be coupled to a source of power external to the portable electronic device; a second node adapted to be coupled to a battery; a third node, coupled to the first and second nodes, and to circuitry of the portable electronic device; and battery charging circuitry, comprising; feedback circuitry coupled to the first node for providing a control signal responsive to an output parameter of the power source; and regulating circuitry, coupled to the first node, the second node, and the feedback circuitry, for providing power to the battery, wherein the power provided to the battery is regulated responsive to the control signal.
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Specification