Method and apparatus for power converter for class D audio power amplifiers
US8253491B2 · kind B2 · utility
2Cited by
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3Claims
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Key dates
| Filing date | Nov 18, 2010 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Nov 18, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for power conversion in a class D amplifier is provided. The power conversion is achieved using synchronous rectifiers in a regulated half bridge power supply, taking the sum of the positive and negative rails as feedback, in order facilitate energy transfer between positive and negative output rails. This minimizes the effects of off side charging and rail sag, as well as achieving good line regulation, while allowing use of very small, low value output capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.