Method of operating a low dropout regulator by selectively removing and replacing a DC bias from a power transistor within the low dropout regulator
US11474546B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Sep 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/561
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method is for operating an electronic device formed by a low dropout regulator (LDO) having an output coupled to a first conduction terminal of a transistor, with a second conduction terminal of the transistor being coupled to an output node. The electronic device is turned on by turning on the LDO, removing a DC bias from the second conduction terminal of the transistor by opening a first switch that selectively couples the second conduction terminal of the transistor to a supply node through a first diode coupled transistor and by opening a second switch that selectively couples the second conduction terminal of the transistor to a ground node through a second diode coupled transistor, and turning on the transistor. The electronic device is turned off by turning off the transistor, forming the DC bias at the second conduction terminal of the transistor, and turning off the LDO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.