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US 2017/0288566 A1Published application
Quiescent Power Supply
AssigneeIntel Corporation
InventorsJAAKKO RAITTINEN, ARTO SIILI, JAAKKO ISOHELLA
Life of this patent
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Abstract
A quiescent power supply including an AC/DC converter, a switch, an energy storage device, and a controller is disclosed. The switch is electrically coupled to the AC/DC converter to electrically disconnect the AC/DC converter from an AC supply line. The controller is operably coupled to the switch to actuate the switch. In particular, the controller can actuate the switch to disconnect the switch during when the AC/DC converter is idle.
Claims25
A quiescent power supply comprising:
- a converter to convert an alternating current (AC) from an AC input line to a direct current (DC) and to provide DC current on a DC output line;
- a switch disposed in series between the AC input line and the converter;
- an energy storage device to provide power to actuate the switch;
- an energy storage device supply line to electrically couple the energy storage device to the DC output line, the energy storage device supply line comprising a turn-on resistor disposed in series between the energy storage device and the DC output line;
- and
- a controller operably coupled to the switch and the DC output line, the controller to actuate the switch to electrically connect the converter to the AC input line based on a voltage drop across the turn-on resistor.
3 more elements
A system comprising:
- a platform component;
- and
- a quiescent power supply operably coupled to the platform component, the quiescent power supply comprising:
- a converter to convert an alternating current (AC) from an AC input line to a direct current (DC) and to provide DC current to the platform component via a DC output line;
- a switch disposed in series between the AC input line and the converter;
- an energy storage device to provide power to actuate the switch;
- an energy storage device supply line to electrically couple the energy storage device to the DC output line, the energy storage device supply line comprising a turn-on resistor disposed in series between the energy storage device and the DC output line;
- and
- a controller operably coupled to the switch and the DC output line, the controller to actuate the switch to electrically connect the converter to the AC input line based on a voltage drop across the turn-on resistor.
6 more elements
A method comprising:
- determining a voltage drop across a turn-on resistor, the turn-on resistor disposed in series between an energy storage device and a direct current (DC) output line of a converter;
- determining whether a current on the DC output line of a converter is greater than a threshold value based on the voltage drop across the turn-on resistor, the converter to convert an alternating current (AC) from an AC input line to DC and to provide DC current on the DC output line;
- actuating a switch with power from the energy storage device to electrically connect the converter to the AC input line based on a determination that the current on the DC output line is greater than the threshold value, the switch disposed in series between the AC input line and the converter.
Dependencies are inferred from the claim text.