Boost converter voltage controlled based on audio signal
US9520782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2014 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Aug 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/004
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.