Charge pump system having multiple charging rates and corresponding method
US6278317A · kind A · utility
41Cited by
14References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 29, 1999 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump generator system and method is provided in which one or more charge pumps are operated at multiple charging rates depending upon the level reached by a voltage supply. The system includes a limiter which provides a control signal based upon the level of the voltage supply. The control signal selects the frequency of a multiple frequency oscillator coupled thereto. The selected frequency determines the charge transfer rate of a charge pump used to maintain the voltage supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.