Patent ID: 11968755
Assignee: ELMOS SEMICONDUCTOR SE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 1:
2. Device for supplying at least two LED groups with electrical energy comprising:
a voltage regulator,
at least two integrated circuits, and
a control bus,, wherein
each of the at least two integrated circuits has at least one LED connection for at least one LED group of the at least two LED groups, and
each of the at least two integrated circuits has at least one LED driver per LED group of the at least one LED group for the energy supply of the LED group via the LED connection associated with the at least one of the LED groups, and
each of the at least two integrated circuits has at least one measuring device for detecting voltage drops respectively between each of the at least one LED connections of the respective integrated circuit and a reference potential (GND), and
each of the at least two integrated circuits comprises a local controller (RA), wherein
the local controller selects a voltage drop value as a characteristic voltage drop value of the respective integrated circuit out of the respective voltage drop values of the at least one LED driver of the respective integrated circuit detected by the measuring device of the respective integrated circuit, and wherein the local controller generates a control value signal at a signal node of the respective integrated circuit according to the selected characteristic voltage drop value of the respective integrated circuit, and wherein
the local controller reduces an amount of a control voltage by the respective integrated circuit when the amount of the control voltage is greater than an amount of the control value signal of the respective integrated circuit at the signal node of the respective integrated circuit, and
an output voltage of the voltage regulator depends on the control voltage or a control bus voltage derived thereof.