Charge pump circuit
US8120413B2 · kind B2 · utility
7Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2009 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Feb 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/078
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A charge pump circuit includes a switch unit adapted to transmit charges from the input of the charge pump to the output of the charge pump; a transmission unit adapted to control turn-on or cut-off of an MOS transistor in the switch unit; and a charging unit in one-to-one correspondence with a PMOS transistor in the switch unit and adapted to store charges to boost the transmission voltage. A first NMOS transistor and at least two PMOS transistor are used as the switch unit during transmission of the charges, so that normal work can be enabled with high transmission efficiency in the case of a low source voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.