System and method for limiting input-current surge in a switching mode power supply
US8299773B2 · kind B2 · utility
100Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2009 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Feb 15, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply comprises an input voltage detector that detects a drop in input voltage that corresponds to an input voltage loss. A power converter is coupled to the input voltage detector. The power converter, which may be a boost converter or a power factor correction converter, has a switching device that is actuated in accordance with a duty cycle. A duty cycle adjuster is responsive to detection of the drop in the input voltage to adjust the duty cycle of the switching device in order to limit an input current surge through the switching device below a desired level after the input voltage returns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.