Driving device of charge pump circuit and driving pulse generation method thereof
US5734286A · kind A · utility
39Cited by
20References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1994 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | May 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1565
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor circuit device includes an oscillator for outputting an oscillating signal, a driving signal generator for generating driving signals having respective phases based on a counting of oscillations of the oscillating signal, and a charge pump circuit driven by the driving signals. A pulse width ratio of the driving signals to one another is constant even when an oscillation period of the oscillating signal output by the oscillator changes, whereby the charge pump operates properly under changing conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.