Charge pump circuit with improved discharge and corresponding discharge method
US10862392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Nov 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump circuit has a plurality of charge pump stages cascaded to one another between an input terminal and an output terminal to provide an output voltage having a boosted value with respect to the input voltage. A clock generator is configured to generate a clock signal provided to the charge pump stages to perform the boosting of the input voltage. An output-voltage regulation feedback closed-loop is coupled to the clock generator to perform a regulation of the output voltage based on a feedback voltage. A discharge control stage is configured to control a discharge of the charge pump circuit by generating a first discharge control signal configured to disable the output-voltage regulation feedback closed-loop or a second discharge control signal configured to reduce the frequency of the clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.