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FAN9673

ON Semiconductor
Part Number FAN9673
Manufacturer ON Semiconductor
Description Three-Channel Interleaved CCM PFC Controller
Published Jan 24, 2023
Detailed Description Three-Channel Interleaved CCM PFC Controller FAN9673 Description The FAN9673 is an interleaved three−channel Continuous ...
Datasheet PDF File FAN9673 PDF File

FAN9673
FAN9673

Overview
Three-Channel Interleaved CCM PFC Controller FAN9673 Description The FAN9673 is an interleaved three−channel Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller IC intended for PFC pre−regulators.
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.
Interleaved operation provides 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 slave channels to be loaded and unloaded smoothly in lower power−level conditions according to setting voltage on the CM pin, improving the PFC converter’s load transient response.
The FAN9673 also incorporates a variety of protection functions, including: peak current limiting, input voltage brownout protection, and TriFault Detect function.
Features • Continuous Conduction Mode Control • Three−Channel PFC Control (Maximum) • Average Current−Mode Control • PFC Slave Channel Management Function • Programmable Operation Frequency Range: 18 kHz ∼ 40 kHz or 55 kHz ∼ 75 kHz • 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 • Available in 32−Pin LQFP Package Typical Applications • 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 DATA SHEET www.
onsemi.
com LQFP32 CASE 561AB MARKING DIAGRAM LS 9 10 11 12 13 14 15 16 CS3− CS2+ CS2− CS3+ GND CS1+ CS1− OPFC3 OPFC2 OPFC1 VDD FBPFC VEA SS IAC 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 ON ZXYTT FAN9673 TM 12345678 VIR CM3 CM2 CM1 IEA3 IEA2 IEA1 RDY BIBO PVO ILIMIT GC RI RLP...


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