Integrated device and method for driving lighting loads with a brightness compensation
US10375774B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Jul 21, 2016 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated device for driving a lighting load, such as a LED, has a first memory element, configured to store a nominal duty-cycle at a nominal supply voltage. An actual voltage acquisition element is configured to detect an actual supply voltage. A processing unit is coupled to the first memory element and to the actual voltage acquisition element and configured to calculate a voltage compensated duty-cycle. A driver unit is coupled to the processing unit and is configured to be supplied according to the voltage compensated duty-cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.