Programmable charge pump
US5760637A · kind A · utility
43Cited by
46References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1995 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Dec 11, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A programmable charge pump produces a selected one of a plurality of bipolar output voltages in response to a pump select input signal. Transistor switches in the charge pump are controlled by logic circuitry so as to provide the selected bipolar output voltages. The charge pump may include a power management circuit to optimize power consumption by varying the clock frequency based on the current being drawn by the load. The charge pump may be fabricated as an integrated circuit which supports a plurality of interface standards requiring different bipolar supply voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.