Low dropout linear regulator and voltage stabilizing method therefor
US11061422B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Jun 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/59
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Disclosed is a low dropout linear regulator and a voltage stabilizing method therefor in embodiments. The low dropout linear regulator includes: a drive circuit, generating a first control signal according to a voltage reference and a feedback voltage and generating an output current according to the first control signal, a load capacitor providing an output voltage according to the output current; a voltage feedback circuit, obtaining the feedback voltage according to the output voltage; a current feedback circuit, generating a second control signal according to the output current; a switch circuit, providing the voltage reference according to the second control signal. Among them, in a first phase of a startup process, the voltage reference is less than or equal to an initial value, and the current feedback circuit limits the output current according to the second control signal; in a second phase of the startup process, the switch circuit switches a voltage value of the voltage reference to a target value. The low dropout linear regulator and the voltage stabilizing method therefor of the embodiment of the disclosure, during the startup process, may effectively limit the output …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.