Circuit configuration for operating LEDs for a micromirror arrangement
US9125262B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2010 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Sep 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/3725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit configuration for operating at least one LED, comprising: an input with a first input terminal (E1) and a second input terminal (E2) for coupling to a DC voltage supply (UG); an output having a first output terminal (A1) and a second output terminal (A2) for providing an output current (IA) to the at least one LED; a micromirror arrangement (12) comprising a plurality of micromirrors; a first control device (16) configured for providing, at the output thereof, a first control signal (Sa) for the micromirror arrangement (12), the first control signal (Sa) being synchronized to a first clock frequency (fc11); a switching regulator (10), the input thereof being coupled to the first input terminal (E1) and the second input terminal (E2), and the output thereof being coupled to the first output terminal (A1) and the second output terminal (A2), the switching regulator (10) comprising a switch (S1); and a second control device (18) configured for providing, at the output thereof, a second control signal (Sb) for the switch (S1) of the switching regulator (10); wherein the second control signal (Sb) is synchronized to a second clock frequency (fc12), wherein the equation fc12=n*…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.