Voltage regulator with gain boosting
US6271652A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Sep 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention relates to a voltage regulator providing high immunity to DC variations of a power supply. The voltage regulator comprises a voltage regulator circuit, a gain stage that is connected to the output of the voltage regulator circuit, and a voltage modulation device forming a signal feedback loop between an output and an input of the gain stage. An initial reference voltage is generated by the voltage regulator circuit and provided to an input of the gain stage. The difference between this initial reference voltage and a fractional portion of the feedback signal, from the voltage modulation device, is amplified by the gain stage. The amplified signal of the gain stage is used to modulate the reference voltage provided to an external load. Better DC accuracy and stability is obtained by using a two stage amplifier to increase the loop gain of the voltage regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.