Differential charge pump
US9413362B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Jul 1, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC-to-DC voltage converter comprising a differential charge pump that utilizes a differential clocking scheme to reduce output electrical noise by partial cancellation of charge pump glitches (voltage transients), and a corresponding method of operating a differential charge pump. The differential charge pump can be characterized as having at least two charge pump sections that initiate charge pumping in opposite phases of a clock signal to transfer (pump) charge to storage capacitors. The differential charge pump is particularly well suited for implementation in integrated circuit chips requiring negative and/or positive voltages, and multiples of such voltages, based on a single input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.