Fast transient charging circuit
First Claim
1. A charging circuit comprising:
- a first path configured to accept a signal representative of at least one supply parameter from an associated power source and provide a first control signal;
a second path configured to accept said signal representative of said at least one supply parameter and provide a second control signal, wherein said second path has a faster transient response time than said first input path;
a third path configured to accept a signal representative of at least one charging parameter from an associated battery and provide a third control signal; and
a regulating circuit configured to accept said first, second, and third control signals and regulate said at least one charging parameter for said associated battery depending on at least one of said first, second, or third control signals.
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Accused Products
Abstract
A charging circuit includes a fast transient input path to improve the transient response of the charging circuit and to avoid related problems such as inadvertent tripping of a power source. A charging circuit system and laptop computer including a charging circuit consistent with the invention is also provided. A method of allocating power from a power source configured to charge a battery includes sensing at least one predetermined supply parameter from a power source, providing a first control signal after a first time interval based on the sensing, providing a second control signal after a second time interval based on the sensing, wherein the second time interval is less than the first time interval, and regulating power to the battery based on at least one of the first and second control signals.
22 Citations
32 Claims
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1. A charging circuit comprising:
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a first path configured to accept a signal representative of at least one supply parameter from an associated power source and provide a first control signal;
a second path configured to accept said signal representative of said at least one supply parameter and provide a second control signal, wherein said second path has a faster transient response time than said first input path;
a third path configured to accept a signal representative of at least one charging parameter from an associated battery and provide a third control signal; and
a regulating circuit configured to accept said first, second, and third control signals and regulate said at least one charging parameter for said associated battery depending on at least one of said first, second, or third control signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A charging circuit system comprising:
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a power source having at least one predetermined supply parameter with a predetermined maximum rating;
a battery;
a sensor configured to sense said at least one predetermined supply parameter and provide a sense signal representative of said at least one parameter; and
a charging circuit comprising;
a first path configured to accept said sense signal and provide a first control signal;
a second path configured to accept said sense signal and provide a second control signal, wherein said second path is configured to have a faster transient response time than said first path; and
a third path configured to accept a signal representative of at least one charging parameter from said battery and provide a third control signal; and
a regulating circuit configured to accept said first, second, and third control signals and regulate said at least one charging parameter for said battery depending on at least one of said first, second, or third control signals. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A laptop comprising:
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a CPU;
a battery; and
a charging circuit comprising;
a first path configured to accept a signal representative of at least one supply parameter from an associated power source and provide a first control signal;
a second path configured to accept said signal representative of said at least one supply parameter and provide a second control signal, wherein said second path has a faster transient response time than said first input path;
a third path configured to accept a signal representative of at least one charging parameter from an associated battery and provide a third control signal; and
a regulating circuit configured to accept said first, second, and third control signals and regulate said at least one charging parameter for said associated battery depending on at least one of said first, second, or third control signals. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method of allocating power from a power source configured to charge a battery comprising the steps of:
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sensing at least one predetermined supply parameter from said power source;
providing a first control signal after a first time interval based on said sensing;
providing a second control signal after a second time interval based on said sensing, wherein said second time interval is less than said first time interval; and regulating power to said battery based on at least one of said first and second control signals. - View Dependent Claims (31, 32)
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Specification