Energy conserving (stand-by mode) power saving design for battery chargers and power supplies with a control signal

A method, comprising:

• monitoring a remaining battery charge level of a battery that provides power to an electronic device of an AC-to-DC power supply during a first power mode of operation of the AC-to-DC power supply;
• detecting that a power requirement of an associated device (AD) powered by the AC-to-DC power supply exceeds a threshold, wherein the AD is not part of the AC-to-DC power supply and the electronic device is part of the AC-to-DC power supply;
• and
• switching the AC-to-DC power supply from the first power mode of operation to a second power mode of operation of the AC-to-DC power supply in response to detecting the power requirement of the AD exceeds the threshold and based, at least in part, on the remaining battery charge level of the battery.

An AC-to-DC power supply comprising:

• an electronic device;
• a battery configured to provide power to the electronic device;
• a control device configured to detect that a power requirement of an associated device (AD) powered by the AC-to-DC power supply exceeds a threshold, wherein the AD is not part of the AC-to-DC power supply and the electronic device is part of the AC-to-DC power supply;
• and
• the control device further configured to monitor a remaining battery charge level of the battery and switch the AC-to-DC power supply from a first power mode of operation to a second power mode of operation in response to detecting the power requirement of the AD exceeds the threshold and based, at least in part, on the remaining battery charge level of the battery.

A system, comprising:

• an AC-to-DC power supply including one or more electronic devices;
• a control device configured to detect that a power requirement of an associated device (AD) powered by the AC-to-DC power supply exceeds a threshold, wherein the AD is not part of the AC-to-DC power supply and the one or more electronic devices are part of the AC-to-DC power supply;
• and
• the control device further configured to switch the AC-to-DC power supply from a first power mode of operation to a second power mode of operation in response to detecting that the power requirement of the AD exceeds the threshold and based, at least in part, on a power mode of the AD powered by the AC-to-DC power supply, wherein a power consumption of the one or more electronic devices is less while the AC-to-DC power supply operates in the first power mode of operation than a power consumption of the one or more electronic device while the AC-to-DC power supply operates in the second power mode of operation.