iW3631 Datasheet | Dialog Semiconductor

i W3631 Two-Stage, Flickerless™ 0-10V Dimmable Digital Off-Line LED Driver with High PF and Low THD 1 Description The i W3631 is a two-stage, high-performance AC/DC offline power supply controller for dimmable LED luminaires with an analog dimming interface. It controls the LED current based on an analog input voltage on the dimming pin. It has a built-in 0-10V dimming interface that works directly with 0-10V dimming systems, eliminating the need for a driver circuit and microcontroller. It can also be implemented to support wireless SSL applications without the need for auxiliary power supplies. The i W3631 uses Dialog’s unique digital Flickerless TM technology to virtually eliminate all flicker in the entire dimming range and to minimize low frequency output ripple current. 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...