Charge pump with high output current
US5216588A · kind A · utility
59Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1992 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Feb 14, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump circuit is disclosed that enables the conversion of a low voltage to a higher voltage while delivering a substantial amount of current. The charge pump circuit includes a plurality of diode-capacitor voltage multiplier pump units connected in parallel with respect to each other. The plurality of pump units are switched at different times during the pump frequency to minimize noise generation. In one embodiment, the charge pump circuit is capable of delivering 8 mA of current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.