Patent · US Active

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

US11968755B2 · kind B2 · utility

0Cited by

5References

2Claims

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	May 20, 2020
Grant date	Apr 23, 2024
Priority date	—
Expiry date	Feb 27, 2041

Classification

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

Abstract

A method supplies a lighting device with electrical energy, wherein the lighting device includes at least two integrated circuits with at least one LED group by a current source associated with this LED group. The method includes generating a supply voltage by a voltage regulator, adjusting a LED group current passing the LED groups by one of the respective current sources , detecting the voltage drops across the current sources, selecting one voltage drop of each integrated circuit as a characteristic voltage drop, generating a control value of the respective integrated circuit, according to the characteristic voltage drop, reducing the control voltage when the control voltage is greater than a control value of the respective integrated circuit, and controlling the output voltage in accordance with the control voltage and/or in accordance with a control bus voltage derived from the control voltage.

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