TECHNIQUES FOR REDUCING NO LOAD POWER IN ELECTRONIC DEVICES
First Claim
1. A power device operative to provide power to an electronic device, the power device comprising:
- a power converter that is operative to receive input power from a power source and to provide output power to the electronic device;
a switch disposed between the power converter and the power source; and
a switch control module operative to selectively couple the power converter to the power source.
2 Assignments
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Accused Products
Abstract
Systems and methods (“utility”) are provided for reducing the no-load (standby) power of power devices such as chargers for electronic devices and power converters for electronic devices. The utility may include a controllable switch that is operative to decouple circuitry of the power device from a power source under certain no-load conditions. In one embodiment, the utility provides a switch control module that is operative to sense when an electronic device is coupled to the power device, and in response, to control the switch to couple the power device to the power source. The switch control module may also be operative to detect a condition when the electronic device is no longer drawing power from the power device, and in response, to control the switch to decouple the power device from the power source.
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Citations
19 Claims
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1. A power device operative to provide power to an electronic device, the power device comprising:
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a power converter that is operative to receive input power from a power source and to provide output power to the electronic device; a switch disposed between the power converter and the power source; and a switch control module operative to selectively couple the power converter to the power source. - View Dependent Claims (2, 3)
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4. A method for reducing the no-load power consumption of a power device, the power device being operative to receive power from a power source and to provide power to an electronic device, the method comprising:
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operating circuitry of the power device to automatically detect a no-load condition; and in response to the operating, automatically decoupling the power device from the power source.
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5. A power device operative to provide power to an electronic device, the power device comprising:
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a rectifier that converts AC input power received from an AC power source to rectified power; a power converter that converts the rectified power to DC output power that can be supplied to an electronic device; a switch located between the rectifier and the power converter to selectively couple rectified power to the power converter when the switch is closed and substantially decouple the rectified power from the power converter when the switch is open; and a switch controller coupled to the switch to control the open or closed status of the switch based on a no-load condition. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A power device operative to provide power to an electronic device, the power device comprising:
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a rectifier that converts AC input power received from an AC power source to rectified power; a power converter that converts the rectified power to DC output power that can be supplied to an electronic device; a switch located between the rectifier and the power converter to selectively couple rectified power to the power converter when the switch is closed and substantially decouple the rectified power from the power converter when the switch is open, the switch having an input; and a circuit connected to the input of the switch to maintain the switch in the closed position in the presence of sufficient current through the circuit and the open the switch in the absence of sufficient current through the circuit. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification