Multi-loop voltage regulator with load tracking compensation
US10775819B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/575
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A multi-loop voltage regulator with load tracking compensation includes a first closed-loop feedback network configured to receive a supply voltage from a power supply and drive an output voltage that is smaller than the supply voltage to a load. The multi-loop voltage regulator includes a second closed-loop feedback network connected to the first closed-loop feedback network and configured to regulate the output voltage between a first supply voltage rail and a second supply voltage rail for a given load current, in which the second closed-loop feedback network produces a gain that is greater than that of the first closed-loop feedback network. The multi-loop voltage regulator also includes a load tracking compensation circuit configured to detect a load current, and to increase the gain of the second closed-loop feedback network based on a dominant pole in the second closed-loop feedback network being a function of the detected load current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.