Ams Ag

Dialog Semiconductor (uk) Limited

Dialog Semiconductor Gmbh

Herbert Truppe

Jochen Kraft

Rainer Minixhofer

Manfred Pauritsch

Jordi Teva

Ingrid Jonak-Auer

David Gamperl

A lighting control system (LCS) for generating supply currents for at least two LED channels (CH, CH, CHn) comprises at least two controlled current sources for generating a supply current for a corresponding LED channel based on a corresponding control signal. The system further comprises at least two signal combiners for generating the corresponding control signals based on a synchronization signal (VSYNC) that comprises periodic starting pulses and on a combination of a magnitude dimming signal and a pulse dimming signal corresponding to one of the LED channels. The signal combiners are designed such that changes of the respective control signals come into effect only with a respective time offset with respect to one of the starting pulses of the synchronization signal.

Lighting control system and method for generating supply currents for LED channels

The photodiode has a p-type doped region () and an n-type doped region () in a semiconductor body (), and a pn junction () between the p-type doped region and the n-type doped region. The semiconductor body has a cavity () such that the pn junction () has a distance (d) of at most 30 &#x3bc;m from the bottom of the cavity ().

Photodiode and production method

Growing community of inventors

Graz, Austria

Herbert Truppe