Controlled switched capacitor coefficients
US9692376B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 15, 2014 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Mar 31, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45551
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switched capacitor circuit including two or more capacitors arranged in a switched capacitor circuit configuration with a comparator comparing a node whose potential varies with the charging of one or more of the switched capacitors. The switched capacitor circuit also has two or more current sources scaled relative to one another coupled to the capacitors and to the comparator, where the current from one current source charges at least two of the capacitors in series during the charge portion of the cycle, and the other current source charges at least one of but at least one fewer of the capacitor(s) during the charge portion of the cycle, and where the current sources are enabled at the beginning of the charge portion of the cycle, but where the comparator disables the current sources once the node reaches a reference potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.