Circuit for clamping current in a charge pump
US8149032B2 · kind B2 · utility
4Cited by
34References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Feb 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/0895
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for clamping current in a charge pump is disclosed. The charge pump includes switching circuitry having a number of switching circuitry transistors. Each of first and second pairs of transistors in the circuit can provide an additional path for current from its associated one of the switching circuitry transistors during off-switching of that transistor so that a spike in current from the switching circuitry transistor is only partially transmitted through a path extending between the switching circuitry transistor and a capacitor of the charge pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.