Power Management for Battery Powered Appliances
First Claim
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1. An adapter for providing an output DC signal, said adapter comprising:
- a PWM generator capable of generating a PWM signal in response to a feedback signal from an external device representative of a power condition of said external device, said adapter capable of adjusting said output DC signal in response to said PWM signal.
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Abstract
A power management topology for portable electronic devices that includes a feed-enabled AC/DC adapter that receives feedback data from a charge controller associated with the portable device. The feedback data can include battery charging current, battery voltage, or power requirements of the portable device. Using the feedback data, the external AC/DC adapter can adjust the DC output to meet the charging requirement of the battery and/or the power requirements of the portable device.
21 Citations
17 Claims
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1. An adapter for providing an output DC signal, said adapter comprising:
a PWM generator capable of generating a PWM signal in response to a feedback signal from an external device representative of a power condition of said external device, said adapter capable of adjusting said output DC signal in response to said PWM signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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receiving a feedback signal from an external device at an adapter, said feedback signal representative of a power condition of said external device;
adjusting a PWM signal generated by said adapter in response to said feedback signal; and
adjusting a DC power signal provided by said adapter in response to said PWM signal. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A power management topology comprising:
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an electronic device capable of generating a feedback signal representative of a power condition of said external device; and
an adapter comprising a PWM generator capable of generating a PWM signal in response to said feedback signal, said adapter capable of adjusting an output DC signal provided from said adapter to said electronic device in response to said PWM signal. - View Dependent Claims (14, 15, 16, 17)
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Specification