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Home » NEWEST Products » New by Manufacturer » Fairchild Semiconductor » CCM PFC Controller FAN9673 - Fairchild Semiconductor
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Fairchild Semiconductor CCM PFC Controller FAN9673

Fairchild Semiconductor CCM PFC Controller FAN9673

Fairchild Semiconductor 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 the power level of the slave channels to be loaded and unloaded smoothly according to the 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 brown out protection, and TriFault Detect™ function.

  • Continuous Conduction Mode Control
  • Three-Channel PFC Control (Maximum)
  • Average Current-Mode Control
  • PFC Slave Channel Management Function
  • Programmable Operation Frequency Range: 18kHz~40kHz or 55kHz~75kHz
  • Programmable PFC Output Voltage
  • Two 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
  • High Power AC - DC Power Supply
  • DC Motor Power Supply
  • White Goods; e.g. Air Conditioner Power Supply
  • Server and Telecom Power Supply
  • UPS
  • Industrial Welding and Power Supply
Part NumberDescriptionData SheetSwitching FrequencyMaximum Power DissipationMaximum Operating TemperatureMounting StylePackage / CasePackagingProductMinimum Operating Temperature

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Typical Application
Typical Application
Block Diagram
Block Diagram
Pin Configuration/Marking Information
Pin Configuration/Marking Information
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