IW3629-00 - Renesas Electronics
Description: The iW3629 two-stage, non-dimmable LED driver is a digital offline PWM controller for solid-state lighting (SSL) applications up to 120W with high power factor (PF >0.95) and low THD (<10%).The two-stage approach allows the first-stage boost converter to convert the rectified AC voltage (90VAC to 277VAC) to an intermediate voltage while correcting for power factor. The second-stage flyback converter then provides the constant current regulation to the LEDs. The combination of an active start-up circuit and