Charging Device with Auto-On Circuit and System
First Claim
Patent Images
1. An electronic device, comprising:
- one or more connectors to connect to one or more external devices;
a power supply circuit to deliver energy through the one or more connectors;
a control circuit to actuate the power supply circuit; and
an auto-on circuit to actuate the control circuit, the auto-on circuit comprising;
a switch;
a trigger input circuit for the switch; and
a latch;
the trigger input circuit responsive to loading at a terminal of the one or more connectors when the one or more external devices is coupled to the one or more connectors to deliver an auto-on signal to the control circuit and the switch;
the control circuit to actuate the latch to deliver power to a power input terminal of the control circuit after receiving the auto-on signal.
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Abstract
An electronic device having an auto-on circuit is provided. The electronic device can include a power supply or charging circuit and a control circuit. The control circuit can cause the power supply or charging circuit to deliver energy to an external device. The auto-on circuit can activate the control circuit in response to one or more trigger input circuits. Each trigger input circuit can actuate a switch and deliver an auto-on signal to the control circuit. The control circuit can then actuate a latch to deliver power to a power input terminal to keep itself powered ON.
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Citations
20 Claims
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1. An electronic device, comprising:
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one or more connectors to connect to one or more external devices; a power supply circuit to deliver energy through the one or more connectors; a control circuit to actuate the power supply circuit; and an auto-on circuit to actuate the control circuit, the auto-on circuit comprising; a switch; a trigger input circuit for the switch; and a latch; the trigger input circuit responsive to loading at a terminal of the one or more connectors when the one or more external devices is coupled to the one or more connectors to deliver an auto-on signal to the control circuit and the switch; the control circuit to actuate the latch to deliver power to a power input terminal of the control circuit after receiving the auto-on signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device, comprising:
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a charging circuit; a control circuit to cause the charging circuit to deliver energy to at least one external device; and an auto-on circuit to activate the control circuit, the auto-on circuit comprising a plurality of trigger input circuits, arranged in an OR configuration, each trigger input circuit to actuate a switch and to deliver an auto-on signal to the control circuit; the control circuit to latch power to a power input terminal of the control circuit after receiving the auto-on signal. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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detecting loading at a terminal of a device in response to an external device being coupled to the terminal; triggering a switch in response to the detecting to deliver an auto-on signal to a control circuit; and latching, with an output of the control circuit, power to the control circuit in response to the triggering. - View Dependent Claims (19, 20)
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Specification