Techniques of ripple reduction for charge pumps
US7683700B2 · kind B2 · utility
34Cited by
68References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2008 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Jul 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/077
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump system for supplying an output voltage to a load is described. It includes a regulation circuit connected to receive the output voltage and derive an enable signal from it and multiple charge pump circuits connected in parallel to supply the output voltage. Each of the charge pump circuits is also connected to receive a clock signal and the enable signal. The system also includes one or more delay circuit elements, where a corresponding one or more, but less than all, of the charge pump circuits are connectable to receive the enable signal delayed by the corresponding delay circuit element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.