FAN9673Q

FAN9673Q is a three-channel interleaved CCM PFC controller IC intended for PFC pre-regulator. Incorporating circuits for the implementation of leading-edge, average current, and “boost”−type power factor correction, the FAN9673 enables the design of a power supply that fully complies with the IEC1000-3-2 specification. The interleaved operation provides a substantial reduction in the input and output ripple currents and the conducted EMI filtering becomes easier and cost-effective. An innovative channel management function allows server channels to be loaded and unloaded smoothly in lower power−level conditions according to the setting voltage on the CM pin, improving the PFC converter’s load transient response. Typical applications include high power AC-DC power supply, DC motor power supply, white goods; e.g. air conditioner power supply, server and telecom power supply, industrial welding and power supply.