Buck regulator with monolithic N- channel upper FET and pilot current sensing
US6734656B2 · kind B2 · utility
18Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Dec 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power switching stage architecture for a buck topology-based, DC—DC converter includes an upper power switching N-channel device FET integrated in the same semiconductor circuit chip with the switching driver, while a lower power switching is also an N-channel FET, but is external to the driver chip. Either of the two power switching FETs may be configured to include a pilot FET cell, to facilitate current sensing for the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.