Charge pump with at least two outputs
US7282985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2005 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Dec 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
“A charge pump used for producing at least a first output voltage and a second output voltage according to an input voltage is disclosed. The charge pump includes a pump unit, first to fourth switches, a first output capacitor and a second output capacitor. During a first period, the input voltage and a first voltage, through a first end and a second end of the pump unit respectively, charge at least an internal capacitor. During a second period, the internal capacitor, based on a second voltage level of the first switch and through the second switch, provides the first output capacitor with charges for producing the first output voltage. Finally, during a third period, the internal capacitor, based on a third voltage level of the third switch and through the fourth switch, provides the second output capacitor with charges for producing the second output voltage.”
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.