Negative voltage generating circuit having automatic voltage adjustment function
US10778092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2017 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Sep 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/071
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a negative voltage generating circuit having an automatic voltage adjustment function, including a negative voltage generating circuit and a feedback control module. The negative voltage generated by the negative voltage generating circuit is adjusted by the feedback control module. The negative voltage generating circuit having the automatic voltage adjustment function of the present disclosure can automatically adjust the charge current of the charge pump according to the load current, thereby realizing the stability of the output voltage, such that the traditional analog circuit structure can work normally under the extremely low power supply voltage, and is particularly suitable for the deep submicron process. The present disclosure also realizes the digital adjustment of the output voltage, the negative voltage output is no longer single, and can be adjusted according to actual needs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.