LIGHTING SYSTEM, RELATED ELECTRONIC CONVERTER AND METHOD OF DESIGNING A LIGHTING SYSTEM

摘要

A lighting system includes an electronic converter, a lighting module and a switching stage. The electronic converter includes a transformer, a rectifier circuit and an output filter circuit. A capacitance is connected between the primary winding and the secondary winding. The lighting module includes a chain of LEDs and a current regulator, wherein the chain of LEDs is mounted onto a substrate of a metallic material, so that a parasitic capacitance is present between the lighting module and the substrate of a metallic material.;The switching stage includes a field-effect transistor interposed in the negative line which connects the lighting module to the electronic converter, and a control unit configured to drive the gate terminal of the transistor as a function of a dimming signal.;The switching stage includes a diode connected to negative output terminal of the switching stage and to positive output terminal of the switching stage.