Over current protection method used in a switched-mode power supply and related controller
US8619440B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Sep 20, 2011 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Sep 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33523
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Control methods and controller thereof for a power supply including a power switch and an inductor. The power switch is turned on to increase the inductor current through the inductor, which is sensed to generate a current-sense signal. The current-sense signal is added up with an adjusting signal to generate a summation signal. The power switch is turned off if the summation signal is higher than a peak limit. The turn-on time of the power switch is detected to update the adjusting signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.