Power supply with zero power consumption capability
First Claim
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1. A power supply device comprising:
- a low-power regulating circuitry operable to receive an electric power signal and output a regulated electric power signal up to a first power limit;
a high-power regulating circuitry operable to receive an electric power signal and output the regulated electric power signal up to a second power limit, wherein the second power limit is higher than the first power limit;
a first switch disposed between the low-power regulating circuitry and the output of the power supply device, operable to switch between at least an open position and a closed position;
a second switch disposed between the high-power regulating circuitry and the output of the power supply device, operable to switch between at least an open position and a closed position;
control circuitry powered by the low-power regulating circuitry and operable to selectively enable the low-power and the high-power regulating circuitry when the power supply device is coupled with an electronic device, wherein the selectively enabling is independent from the position of the first and the second switches, wherein the selectively enabling is independent from a power level of the electric power signal.
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Abstract
Power supply devices are provided that can include power regulating circuitry for regulating (e.g., transforming or converting) electric power to be passed to an electronic device. A power supply device can also include control circuitry coupled with the regulating circuitry. The control circuitry can determine when the power supply device is coupled with an electronic device. The control circuitry can control the operation of the regulating circuitry based on whether or not the power supply device is coupled with the electronic device.
26 Citations
28 Claims
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1. A power supply device comprising:
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a low-power regulating circuitry operable to receive an electric power signal and output a regulated electric power signal up to a first power limit; a high-power regulating circuitry operable to receive an electric power signal and output the regulated electric power signal up to a second power limit, wherein the second power limit is higher than the first power limit; a first switch disposed between the low-power regulating circuitry and the output of the power supply device, operable to switch between at least an open position and a closed position; a second switch disposed between the high-power regulating circuitry and the output of the power supply device, operable to switch between at least an open position and a closed position; control circuitry powered by the low-power regulating circuitry and operable to selectively enable the low-power and the high-power regulating circuitry when the power supply device is coupled with an electronic device, wherein the selectively enabling is independent from the position of the first and the second switches, wherein the selectively enabling is independent from a power level of the electric power signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for providing electric power to an electronic device, the method comprising:
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coupling a power supply device to a source of raw electrical power, wherein the power supply device comprises a low-power and a high-power regulating circuit and a first and a second switch coupled between the low-power and the high-power regulating circuits and the electronic device and operable to switch between at least an open position and a closed position; providing power to at least a portion of a control circuitry with the low-power regulating circuit; determining when the power supply device is coupled with the electronic device; and selectively enabling the low-power and high-power regulating circuit based on the determining, wherein the selectively enabling is independent from the position of the switches, wherein the selectively enabling is independent from a power level of the raw electric power. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A power supply device comprising:
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a first and a second AC-to-DC converter each operable to receive an electric power signal with an alternating current and output an electric power signal with a direct current; a first switch coupled with the first AC-to-DC converter and operable to switch between at least an open position and a closed position; a second switch coupled with the second AC-to-DC converter and operable to switch between at least an open position and a closed position; and control circuitry coupled with the first and second converters, powered by the first converter, and operable to selectively enable the converters when the power supply device is coupled with an electronic device, wherein the selectively enabling is independent from the position of the switches, wherein the selectively enabling is independent from a power level of the electric power signal, wherein the first converter comprises a low-power regulating circuitry portion operable to output the electric power signal up to a first power limit, wherein the second converter comprises a high-power regulating circuitry portion operable to output the electric power signal up to a second power limit, wherein the second power limit is higher than the first power limit.
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27. A method for providing electric power to an electronic device, the method comprising:
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coupling a power supply device to a source of raw electrical power, wherein the power supply device comprises a first and a second AC-to-DC converter and a first and a second switch coupled with the first and the second AC-to-DC converters and operable to switch between at least an open position and a closed position; determining when the power supply device is coupled with the electronic device; and selectively enabling the first and the second AC-to-DC converters based on the determining, wherein the selectively enabling is independent from the position of the switches, wherein the selectively enabling is independent from a power level of the raw electric power, wherein the first converter comprises a low-power regulating circuitry portion operable to output the electric power up to a first power limit, wherein the second converter comprises a high-power regulating circuitry portion operable to output the electric power up to a second power limit, wherein the second power limit is higher than the first power limit. - View Dependent Claims (28)
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Specification