User manual

www.ti.com

Experimental Results

Figure 18. Bottom Middle Layer

Figure 19. Bottom Layer

14 Experimental Results

The LED driver is designed to accurately emulate an incandescent light bulb and therefore behave as an

emulated resistor. The resistor value is determined based on the LED string configuration and the desired

output power. The circuit then operates in open-loop, with a fixed duty cycle based on a constant on-time

and constant off-time that is set by selecting appropriate circuit components.

SNVA462F–November 2010–Revised May 2013 AN-2097 LM3444 - 230VAC, 8W Isolated Flyback LED Driver

Submit Documentation Feedback