Charge pump circuit
US8242834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2010 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump circuit includes an input end, a first reservoir capacitor, a second reservoir capacitor, a first output end, a second output end, and a charge pump unit. The input end is utilized for receiving an input voltage. The charge pump unit includes a first flying capacitor, a second capacitor, a plurality of switches, and a control unit. The control unit is utilized for controlling on/off state of the plurality of switches so that the first flying capacitor provides a positive charge pump voltage to the first output end or a negative charge pump voltage to the second output and the second flying capacitor provides a positive charge pump voltage to the first output end through charge and discharge process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.