Smart speaker power management

A smart speaker system comprising:

• a power controller configured to receive power from an input power source, wherein the received power conforms to one of a plurality of power modes;
• a processing system configured to receive power from the power controller via a processing system power bus;
• and
• an audio system configured to receive power from the power controller via an audio system power bus;
• wherein:
• the power controller is configured to communicate the power mode of the incoming power to at least one component of the processing system or at least one component of the audio system;
• and
• the power controller is configured to communicate the power mode to a current limit selector configured to determine a current limit in accordance with the power mode of the incoming power and limit current of a power converter in accordance with the determined current limit.

A method of operating a smart speaker, the method comprising:

• determining a power mode of input power received by the smart speaker, the power mode including an input voltage and at least one of an available current or an available power;
• and
• responsive to the input power mode, performing at least one of:
• determining a shutdown voltage threshold corresponding to the input power mode and, responsive to an input voltage below the determined shutdown voltage threshold, performing a safe shutdown of the smart speaker;
• determining a current limit corresponding to the input power mode and limiting a current of a power converter based on the determined current limit;
• or
• setting one or more audio parameters corresponding to the input power mode and operating an audio system of the smart speaker according to the set audio parameters.