Break-before-make distortion compensation for a digital amplifier
US6362683B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Jul 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/502
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are described for reducing or eliminating break-before-make distortion in switching amplifiers. A switching amplifier has an input stage for generating a switching signal. Break-before-make distortion compensation circuitry alters the switching signal. Break-before-make generator circuitry generates two drive signals from the altered switching signal. A power stage includes two switches which are alternately driven by the two drive signals. Break-before-make distortion detection circuitry detects a distortion pattern at the power stage output node and controls the break-before-make distortion compensation circuitry to alter the switching signal in response to the distortion pattern detected to thereby eliminate at least some break-before-make distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.