Patent ID: 11889594
Assignee: STMICROELECTRONICS S.R.L.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A system, comprising:
a microcontroller;
a driver circuit coupled to the microcontroller, the driver circuit comprising a plurality of output supply pins, the driver circuit configured to:
receive data from the microcontroller,
selectively propagate a supply voltage to the output supply pins to transmit a pulse-width modulated supply signal at a corresponding output supply pin, and
compute a duty-cycle value of the pulse-width modulated supply signal at the corresponding output supply pin as a function of the data received from the microcontroller;

a plurality of lighting devices coupled to the plurality of output supply pins, wherein a subset of lighting devices is coupled to a same output supply pin of the plurality of output supply pins; and
electronic switches coupled in series to the subset of lighting devices, wherein the microcontroller is configured to individually control each of the electronic switches via a corresponding control signal to individually adjust a brightness of the subset of lighting devices.