Led-Kurzschlussdetektionsschaltung und Led-System damit

Details

Veröffentlichungs-Nr.

EP4739002

Anmeldetag

23. September 2025

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

IPC

H05B45/54, G01R31/52

Abstract

A light-emitting diode (LED) short detection circuit includes a first smoothing circuit configured to receive a first LED driving voltage applied to a first end of an LED string and perform smoothing on the first LED driving voltage; a second smoothing circuit configured to receive a second LED driving voltage applied to a second end of the LED string and perform smoothing on the second LED driving voltage; an amplifier configured to amplify a difference between a first smoothing voltage output from the first smoothing circuit and a second smoothing voltage output from the second smoothing circuit to output a detection voltage; and a short-circuit determination circuit configured to compare the detection voltage with a predetermined reference voltage to output a short-circuit signal indicating whether a short-circuit has occurred.

Anmelder

Firma

Samsung Electro-Mechanics Co., Ltd.

Land

🇰🇷 Südkorea