High current LDO voltage regulator with dynamic pre-regulator
US10146240B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2018 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Feb 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage regulator having a pre-regulator circuit is disclosed. A low dropout (LDO) voltage regulator includes an amplifier circuit, a current buffer circuit, and a pre-regulator circuit. The current buffer circuit includes a transistor having a gate terminal coupled to the amplifier output. The current buffer provides a current based at least in part on the output signal generated by the amplifier. The pre-regulator circuit is coupled to provide a dynamic supply voltage to the current buffer. They dynamic supply voltage depends at least in part on a fixed supply voltage provided thereto, as well as the output voltage provided by the LDO voltage regulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.