Capacitor-less low dropout regulator using dual feedback loop structure
US12007801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2022 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Feb 16, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/565
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A capacitor-less low dropout regulator includes: a capacitor-less dual feedback loop unit including a plurality of feedback resistors, an error amplifier, and a transconductance cell to form a main loop passing through the error amplifier and a sub-loop passing through the gm cell without passing through the error amplifier; a dynamic compensation unit connected to a first main pole located at an output of the error amplifier and a second main pole located at an output of the gm cell to provide dynamic frequency compensation using a Miller effect to the first main pole and the second main pole according to a load current of the capacitor-less dual feedback loop unit; and a load current measurement unit configured to measure a load current of a third main pole formed at a load of the dual feedback loop unit to provide the load current to the dynamic compensation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.