Lighting Systems

Understand the fundamental characteristics of LEDs, lamps and other lighting components and their common operating methods. Design current control circuits with analog or PWM dimming for LEDs, or perform system-level analysis of fuse and wire sizes, driven by lamp cold-filament in-rush currents.

Application Area Featured Designs

Application Area Groups

Lighting Systems

Understand the fundamental characteristics of LEDs, lamps and other lighting components and their common operating methods. Design current control circuits with analog or PWM dimming for LEDs, or perform system-level analysis of fuse and wire sizes, driven by lamp cold-filament in-rush currents.

LED Driver with Auto-Dimming for Thermal Protection

Featured Article - Submitted by Mike Donnelly on 21 Nov 2019 | 07:10 PST

Vishay Logo

In my previous article I demonstrated an important self-protection feature of the NCV84160 from ON Semiconductor; its ability to enter thermal limit cycling if the internal device temperature gets too high. My friend and fellow model-developer, Alain Stas of Vishay, recently suggested that NTC thermistors could be used to provide similar protection at the circuit board or system level. One application where this could be implemented in a very natural way is for LED lighting systems.

Vishay SMD NTC Thermistors

Vishay SMD NTC Thermistors with Enhanced Stability