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

Claim 14:
15. A method of operating a device, comprising:
receiving, by a driver circuit, data from a microcontroller, the driver circuit comprising a plurality of output supply pins
selectively propagating a supply voltage to the output supply pins to transmit a pulse-width modulated supply signal at a corresponding output supply pin;
computing 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; and
individually controlling, by the microcontroller, electronic switches via a corresponding control signal to individually adjust a brightness of a subset of lighting devices, the device comprising a plurality of lighting devices coupled to the plurality of output supply pins, wherein the subset of lighting devices is coupled to a same output supply pin of the plurality of output supply pins, the electronic switches coupled in series to the subset of lighting devices.