Mos voltage elevator of the charge pump type
US5874850A · kind A · utility
36Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Aug 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump MOS voltage booster has reduced voltage drops and ripple. This voltage booster is advantageously used in two applications. The voltage has four MOS transistors instead of diodes in a classical voltage booster, which exhibit an undesired voltage drop. The voltage booster also has an oscillator with two outputs and two corresponding charge transfer capacitors. In this manner, the undesired voltage drops and ripple are reduced without complicating the circuitry structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.