Stmicroelectronics S.r.l.

Stmicroelectronics Application Gmbh

Stmicroelectronics Design and Application S.r.o.

Jochen Barthel

Fred Rennig

Mirko Dondini

Ludek Beran

Calogero Andrea Trecarichi

Donato Tagliavia

Vincenzo Polisi

Francesco Nino Mammoliti

Vaclav Dvorak

Alfonso Furio

A control circuit for a voltage source generates a reference signal for a voltage source, wherein the reference signal indicates a requested output voltage to be generated by the voltage source. A digital feed-forward control circuit computes a digital feed-forward regulation value indicative of a requested output voltage by determining a maximum voltage drop at strings of solid-state light sources. A digital feed-back control circuit determines a minimum voltage drop for current regulators/limiters for the strings and determines a digital feed-back correction value as a function of the minimum voltage drop. The control circuit then sets the reference signal after a start-up as a function of the digital feed-forward regulation value and corrects the reference signal as a function of the digital feed-back correction value.

Current supply system, related integrated circuit, power supply system and method of operating a current supply system

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Schechen, Germany

Jochen Barthel