Feedback network for low-drop-out generator
US9317054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2014 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Sep 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/575
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A circuit may include a differential amplifier and a feedback network. The feedback network may have a chain of resistance sets coupled in series, with a first end terminal coupled to an output terminal of the differential amplifier and a second end terminal coupled to a power reference terminal of the differential amplifier. Respective nodes may be coupled between successive ones of the resistance sets. A feedback terminal may be coupled to an inverting input terminal of the differential amplifier. A controller may control a set of switches to electrically couple a given node to the feedback terminal. A first resistance set of the chain adjacent the first end terminal may be two resistance subsets coupled in series, with an intermediate node coupled therebetween. A programmable current generator may have a current output coupled to the intermediate node and may produce a controlled current flowing at the current output terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.