Light load current-mode control for switched step up-step down regulators
US7256570B2 · kind B2 · utility
16Cited by
24References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Feb 8, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched regulator circuit provides step-up and step-down operation at high efficiency during light load conditions. Switching loss is reduced in a four switch arrangement by limiting bottom MOSFET switching frequency. The possibility of overcharge in boost mode operation has been avoided by automatically changing to a buck mode operation in response to sensed parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.