Driver assembly and method for detecting an error condition of a lighting unit
US9736896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2012 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | May 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver assembly (100) for a lighting unit (230) comprises a control unit (110). The lighting unit (230) comprises a plurality of strands (240, 250, 260), wherein each strand comprises a series circuit (242, 252, 262) of light-emitting diodes and a current source (243, 253, 263) with a first and a second terminal (246, 256, 266), and wherein the series circuit (242, 252, 262) of diodes is connected between a supply voltage input (231) of the lighting unit (230) and the first terminal of the current source (243, 253, 263) and the second terminal (246, 256, 266) of the current source is connected to a reference potential terminal via a resistor (245, 255, 265). The control unit (110) is designed for generating a corresponding control signal for a voltage converter (210) from a respectively adjusted control value, wherein said voltage converter is designed for making available an output voltage at the supply voltage input (231) of the lighting unit (230) based on the control signal, for acquiring a measured value at each of the second terminals (246, 256, 266) of the current sources (243, 253, 263), for storing an adjusted control value for each strand (240, 250, 260) based on the ac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.