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This literature is subject to all applicable copyright laws and is not for resale in any manner.FAN6921ML Integrated Critical Mode PFC / Quasi-Resonant Current Mode PWM Controller March 2016 FAN6921ML Integrated Critical Mode PFC/Quasi-Resonant Current Mode PWM Controller Features Description The highly integrated FAN6921ML combines a Power Integrated PFC and Flyback Controller Factor Correction (PFC) controller and a Quasi- Critical Mode PFC Controller Resonant PWM controller. Integration provides cost- effect design and allows for fewer external components. Zero-Current Detection for PFC Stage For PFC, FAN6921ML uses a controlled on-time Quasi-Resonant Operation for PWM Stage technique to provide a regulated DC output voltage and Internal Minimum t 8 s for QR PWM Stage OFF to perform natural power factor correction. With an innovative THD optimizer, FAN6921ML can reduce Internal 10 ms Soft-Start for PWM input current distortion at zero-crossing duration to Brownout Protection improve THD performance. H/L Line Over-Power Compensation (OPC) For PWM, FAN6921ML enhances the power system performance through valley detection, green-mode Latched Protection (FB Pin) operation, and high / low line over power compensation. Over-Power/ Overload Protection FAN6921ML provides: secondary-side open-loop and Short-Circuit Protection over-current protection, external latch triggering, adjustable over-temperature protection by RT pin and Open-Loop Protection external NTC resistor, internal over-temperature Externally Latch Triggering (RT Pin) shutdown, V pin OVP, and DET pin over-voltage for DD output OVP, and brown-in/out for AC input voltage Adjustable Over-Temperature Latched (RT Pin) under-voltage protection (UVP). VDD Pin & Output Voltage OVP (Latched) The FAN6921ML controller is available in a 16-pin small Internal Temperature Shutdown (140C) outline package (SOP). Applications AC/DC NB Adapters Open-Frame SMPS Battery Charger Ordering Information Operating Packing Part Number OLP Mode Package Temperature Range Method -40 C to +105 C 16-Pin Small Outline Package (SOP) FAN6921MLMY Latch Tape & Reel 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6921ML Rev. 1.7