Charge pump, DC-DC converter, and method thereof
US7706159B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump for a DC-DC converter includes an input terminal receiving an input voltage, an output terminal outputting an output voltage, a plurality of charge pumping stages connected in series between the input terminal and the output terminal, and a voltage level shifter shifting voltage levels of first and second gate clock signals so that received first and second gate clock signals have a predetermined amplitude. Therefore, the charge pump can increase power efficiency by maximizing a magnitude of VGS. A DC-DC converter using the charge pump can also be applied to a portable device, for minimizing power consumption, and a method for improving power efficiency of the DC-DC converter is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.