Split reservoir capacitor architecture for a charge pump
US10090758B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2017 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Aug 22, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments herein provide electronic devices that include a charge pump coupled to a split reservoir capacitor which includes at least two discrete capacitors. Further, the discrete capacitors are coupled together by a switch (e.g., a transistor) which is controlled by an output regulator. In one embodiment, the output regulator monitors an output voltage of the charge pump and the split reservoir capacitor to determine when the output differs from a predetermined target voltage. When the switch isolates the two capacitors, the charge pump can continue to add charge to a first one of the discrete capacitors. Thus, when the output regulator detects a dip in the output voltage and activates the switch to reconnect the two discrete capacitors, the first discrete capacitor has extra charge which can decrease the time needed to bring the output voltage back to the target voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.