Method for correcting a harmonic distortion of a power bridge, in particular for a class D amplifier
US7667537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Dec 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/351
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To correct for harmonic distortion of a power bridge, the form of a pulse at the output of the power bridge and of estimate of non idealities under different current conditions is acquired. An estimate of a current at the output of the power bridge is also acquired. The switching control signal applied to the power bridge is then regulated based on the acquired estimates. More specifically, an area error introduced by the estimated non-idealities of the power bridge for a certain output current is determined and the edges of the switching control signal input to the power bridge are temporally shifted in response to the determined area error so as to account for the determined area error and correct for harmonic distortion concerns in the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.