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.

• Three channel PFC control (Maximum), average current-mode control
• Programmable PFC output voltage, dual current limit functions
• TriFault detect protects against feedback loop failure
• Sag protection, programmable soft-start, under voltage lockout (UVLO), differential current sensing
• DC supply voltage is 30V max, 1640mW power dissipation (TA < 50°C)
• Startup current is 30µA typ (VDD = VTH-ON - 0.1V, VDD = 15V and TJ = -40 to 105°C)
• Sourcing voltage on RI range from 1.15 to 1.25V (RRI = 25kohm, VDD = 15V and TJ = -40 to 105°C)
• Reference voltage range from 2.45 to 2.55V (PVO = GND, TJ = 25°C)
• Bandwidth is 2KHz typ (IAC = 40µA, VDD = 15V and TJ = -40 to 105°C)
• 32LD, LQFP package, operating temperature range from -40°C to +105°C