Linear voltage regulator utilizing a large range of bypass-capacitance
US9671805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Jun 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45674
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Amplifiers, notably multi-stage amplifiers, such as linear regulators (e.g. low-dropout regulators) configured to provide a constant output voltage subject to load transients are presented. An amplifier is described, which comprises a first amplification stage configured to provide an intermediate voltage, based on an outer feedback voltage and based on a reference voltage. Furthermore, the amplifier comprises an output stage configured to provide a load current at an output voltage based on the intermediate voltage. In addition, the amplifier comprises an outer feedback circuit configured to derive the outer feedback voltage from the output voltage. The output stage comprises a buffer configured to provide a drive voltage based on the intermediate voltage and based on an inner feedback voltage derived from the output voltage. The buffer comprises a pass device which is configured to provide the load current at the output voltage based on the drive voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.