Battery Charging Systems and Methods with Adjustable Current Limit
First Claim
1. An electronic circuit comprising:
- a regulator having an input coupled to a power source for receiving a voltage and a current and an output for providing an output current;
an input voltage detection circuit coupled to the power source; and
an adjustable current limit circuit for controlling the input or output current of the regulator,wherein input voltage detection circuit monitors the voltage from the power source and the adjustable current limit circuit changes the input or output current of the regulator if the voltage from the power source is below a threshold value.
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Abstract
Embodiments of the present invention include techniques for charging a battery using a regulator. In one embodiment, the present invention includes an electronic circuit comprising a regulator having an input coupled to a power source for receiving a voltage and a current and an output for providing an output current, an input voltage detection circuit coupled to the power source, and an adjustable current limit circuit for controlling the input or output current of the regulator, wherein input voltage detection circuit monitors the voltage from the power source and the adjustable current limit circuit changes the input or output current of the regulator to optimize the power drawn from power source.
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Citations
26 Claims
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1. An electronic circuit comprising:
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a regulator having an input coupled to a power source for receiving a voltage and a current and an output for providing an output current; an input voltage detection circuit coupled to the power source; and an adjustable current limit circuit for controlling the input or output current of the regulator, wherein input voltage detection circuit monitors the voltage from the power source and the adjustable current limit circuit changes the input or output current of the regulator if the voltage from the power source is below a threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of controlling current in an electronic circuit comprising:
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receiving a voltage and current from a power source at an input of a regulator; monitoring the voltage from the power source; and changing an input or output current of the regulator if the voltage from the power source is below a threshold value. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification