Charge pump for generating arbitrary voltage levels
US7279957B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Aug 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump for generating an arbitrary voltage level includes “M” pieces of pump units PUi and “M+1” pieces of first switches Sj. The pump unit PUi includes a first terminal Ni,1 coupled to a reference voltage Vi,1, a second terminal Ni,2 coupled to a reference voltage Vi,2, a third terminal Ni,3, a fourth terminal Ni,4 and at least one capacitor Ci. Ci is charged by Vi,1 and Vi,2 during a first period, and a voltage is provided from Ni,4 by Ci according to a voltage at Ni,3 during a second period. The first switch Sj is adapted for electrically connecting the first terminal and the second terminal during the second period. The first and second terminals of Sk is coupled to Nk−1,4 and Nk,3, respectively. The first terminal of S1 receives the input voltage and the second terminal of SM+1 outputs the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.