Patent · US Active

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

US11751307B2 · kind B2 · utility

1Cited by

3References

4Claims

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	Sep 5, 2023
Priority date	—
Expiry date	May 25, 2040

Classification

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

Abstract

A device comprises a voltage regulator, circuits, a voltage-to-current converter, a control bus, a resistor and a resistor network. Each of the circuits has at least one LED connector and one LED driver. Each of the circuits has a measuring circuit for detecting voltage differences between the potentials of LED terminals and a reference potential. Further, each of the circuits includes a local controller. The local controller withdraws a current from the control bus in dependence on the detected voltage differences. Bias current sources inject bias currents into the control bus in form of a sum current of the injected bias currents. The resistor performs a current-to-voltage conversion of the sum current to a control voltage. The voltage-to-current converter converts the control voltage into a current. The resistor network converts the current into a voltage value. An output voltage of the voltage regulator depends on the voltage value.

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