Switched resistor for switched driver stage feedback loop
US11990870B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
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Inventor
Key dates
| Filing date | Mar 7, 2022 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Feb 8, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/03
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A class-D driver circuit includes a feedback loop including an input integrator stage, a switched modulator, and an output driver stage. A feedback resistor connects an output terminal of the output driver stage with an input node of the input integrator stage to provide a feedback current. The class-D driver circuit also includes a compensation circuit configured to provide a compensation current to an output node of the input integrator stage to relieve a slew rate limitation of the feedback loop, the compensation current having a magnitude based on the magnitude of the feedback current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.