Charge pump circuit and methods of operation thereof
US7626445B2 · kind B2 · utility
25Cited by
32References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2007 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Dec 27, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/072
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dual mode charge-pump circuit and associated method and apparatuses for providing a plurality of output voltages, using a single flying capacitor, the circuit including a network of switches that is operable in a number of different states and a controller for operating said switches in a sequence of the states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage and centered on the voltage at the common terminal, in a first mode and positive and negative output voltages each up to substantially the input voltage in a second mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.