Efficient charge pump capable of high voltage operation
US6788130B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Sep 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high voltage integrated circuit operable in a system having a low voltage reference, a high voltage reference, and a ground, for providing an output voltage higher than the high voltage reference. The integrated circuit includes a high voltage ground reference circuit, operable to provide a high voltage ground reference node. Also included is an oscillator, operable to provide a clock signal, the oscillator being connected to the high voltage reference and to the high voltage ground reference node. An isolated charge pump circuit is provided, operable to generate the output voltage and isolated in the integrated circuit from other circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.