Patent · US Active

Method for detecting a defect in an LED string and electronic circuit with at least one LED string

US11076473B2 · kind B2 · utility

0Cited by

1References

16Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Marco Pamato · Schio, IT
Damiano Sartori · Isola di Terranegra, IT
Gernot Unterweger · Latschach, AT

Key dates

Filing date	Nov 26, 2019
Grant date	Jul 27, 2021
Priority date	—
Expiry date	Nov 26, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/58
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and an electronic circuit are disclosed. The method includes detecting at least one operating parameter in an electronic circuit that includes a monitored LED string; adjusting a voltage threshold based on the at least one detected operating parameter; detecting a string voltage across the monitored LED string; comparing the string voltage with the voltage threshold; and detecting a defect in the LED string based on the comparing.

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