Patent · US Active

Method and apparatuses for controlling the output voltage of a voltage regulator

US12160941B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

ELMOS SEMICONDUCTOR SE · DE

Inventors

Carsten Leitner · Berlin, DE
Andre' Krieger · Berlin, DE
Christian Schmitz · Wilrijk, BE
Thomas Geistert · Warstein, DE

Key dates

Filing date	Jul 17, 2023
Grant date	Dec 3, 2024
Priority date	—
Expiry date	Jul 17, 2043

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device includes a voltage regulator, circuits, and a current bus. Each of the circuits includes at least one LED driver. The voltage regulator supplies electrical energy to a plurality of LED groups. Each of the circuits includes a voltage measuring circuit for detecting voltage drops across the LED drivers. The LED drivers set the currents through the LED groups. Each of the circuits includes a local controller. The local controller withdraws a current from the control bus in dependence on the detected voltage drops of the LED drivers included in the circuit. A bias current source injects a bias current into the control bus. The control bus sums the currents in the current bus. The output of the regulator is controlled based on the summed current.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.