ELECTRONIC SYSTEM FOR DRIVING LIGHT SOURCES AND METHOD OF DRIVING LIGHT SOURCES

A system (100') comprises a microcontroller unit (102) and a driver device (101) coupled (105) to the microcontroller unit (102) to receive data therefrom. The driver device (101) comprises a plurality of output supply pins (101C1, ..., 101Cn) and is configured to selectively propagate (301, ..., 30n) a supply voltage (VBAT) to the output supply pins (101C1, ..., 101Cn) to provide respective pulse-width modulated supply signals (VBAT,1, ..., VBAT,n) at the output supply pins (101C1, ..., 101Cn). The driver device (101) is configured to compute respective duty-cycle values of the pulse-width modulated supply signals (VBAT,1, ..., VBAT,n) as a function of the data received from the microcontroller unit (102) . The system further comprises a plurality of lighting devices (311,1, ..., 311,m, 31n) coupled to the plurality of output supply pins (101C1, ..., 101Cn). The plurality of lighting devices (311,1, ..., 311,m, 31n) comprises at least one subset of lighting devices (311,1, ..., 311,m) coupled to a same output supply pin (101C1) in the plurality of output supply pins (101C1, ..., 101Cn). The system further comprises a set of respective electronic switches coupled in series to the lighting devices in the at least one subset of lighting devices (311,1, ..., 311,m). The microcontroller unit (102) is configured to individually control the electronic switches via respective control signals (P1,1, ..., P1,m) to individually adjust a brightness of the lighting devices in the at least one subset of lighting devices (311,1, ..., 311,m).