FAN9673 Three-Channel Interleaved CCM PFC Controller Description The FAN9673 is an interleaved three channel Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller www.onsemi.com IC intended for PFC preregulators. Incorporating circuits for the implementation of leading edge, average current, and boosttype power factor correction, the FAN9673 enables the design of a power supply that fully complies with the IEC100032 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 powerlevel conditions LQFP32 according to setting voltage on the CM pin, improving the PFC CASE 561AB converters load transient response. The FAN9673 also incorporates a variety of protection functions, including: peak current limiting, input voltage brownout protection, MARKING DIAGRAM and TriFault Detect function. Features 24 23 22 21 20 19 18 17 Continuous Conduction Mode Control VIR OPFC3 ThreeChannel PFC Control (Maximum) OPFC2 CM3 Average CurrentMode Control OPFC1 CM2 PFC Slave Channel Management Function ON ZXYTT VDD CM1 Programmable Operation Frequency Range: 18 kHz 40 kHz F A N 9 6 7 3 FBPFC IEA3 or 55 kHz 75 kHz TM Programmable PFC Output Voltage VEA IEA2 Dual Current Limit Functions SS IEA1 TriFault Detect Protects Against Feedback Loop Failure IAC RDY Sag Protection 1 2 3 4 5 6 7 8 Programmable SoftStart UnderVoltage Lockout (UVLO) Differential Current Sensing Z = Assembly Plant Code X = Year Code Available in 32Pin LQFP Package Y = Work Code TT = Die Run Code Typical Applications T = Package Type (Q:LQFP) M = Manufacture Flow Code High Power ACDC Power Supply DC Motor Power Supply White Goods e.g. Air Conditioner Power Supply ORDERING INFORMATION Server and Telecom Power Supply See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. Industrial Welding and Power Supply Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: June, 2019 Rev. 7 FAN9673/D 32 31 30 29 28 27 26 25 BIBO GND PVO CS1+ ILIMIT CS1 GC CS2+ RI CS2 CS3+ RLPK CS3 ILIMIT2 LPK LS 9 10 11 12 13 14 15 16FAN9673 ORDERING INFORMATION Operating Temperature Range Part Number Package Packing Method FAN9673Q 40C to 105C 32LD, LQFP, JEDEC MS026, Variation BBA, 7 mm Tray Square FAN9673QX Tape & Reel TYPICAL APPLICATION *DBP RB 1 V L D V IN PFC1 PFC1 PFC L D PFC2 PFC2 C B+ R C FB1 OUT L D PFC3 PFC3 AC Line EMI In Filter R FB2 S S S PFC1 PFC2 PFC3 R R B1 A1 R R R SEN1 SEN2 SEN3 C FB3 RFB3 RB2 RA2 R F C F1 C F2 R OPFC1 CS1+ CS1 OPFC2 CS2+ CS2 OPFC3 CS3+ CS3 B3 IAC FBPFC C VC2 BIBO VEA CSS RVC1 CVC1 CB1 CB2 R B4 SS C C ILIMIT2 IC12 IEA1 ILIMIT2 R C R IC1 IC11 ILIMIT2 FAN9673 CVI22 RDY MCU IEA2 R C IC2 IC21 MCU signal(DC) PVO C IC32 IEA3 R C LS IC3 IC31 R LS C VDD GC GC R GC C VDD LPK CM1 CM2 CM3 GND RLPK RI ILIMIT VIR Standby Power R R RI ILIMIT MCU R RLPK C RVIR RLPK VIR Channel Enable C C CILIMIT LPK RLPK * About D please reference System Design Precautions BP Figure 1. Typical Application Diagram for Three Channel PFC Converter www.onsemi.com 2 Driver Circuit Driver Circuit Driver Circuit