BOOST CONVERTER VOLTAGE CONTROLLED BASED ON AUDIO SIGNAL

摘要

Audio amplification may be improved by controlling an audio amplifier based on the audio signal being amplified. For example, when the audio signal level increases or decreases, a boost voltage provided to an audio amplifier by a boost converter may also be increased or decreased. In another example, when the audio signal level decrease below a certain level, the audio amplifier may be switched from amplifying the audio signal with a boost converter input to amplifying the audio signal with a low voltage input. Control of the audio amplifier may be implemented in a digital boost converter controller coupled to the boost converter and/or the audio amplifier.

主权项

1. A method, comprising:
receiving, at a controller, an audio signal; configuring, by the controller, a boost converter for a boost voltage based, at least in part, on the received audio signal, wherein the boost converter generates the boost voltage by:
building current in an inductor in a first phase; anddischarging current from the inductor to a capacitor during a second phase; and amplifying, at an amplifier coupled to the processor and the boost converter, the audio signal based, at least in part, on the boost voltage of the boost converter.