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FAN6921AMRMY Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FAN6921AMRMY Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 24 page May 2013 © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6921AMR • Rev. 1.0.2 FAN6921AMR Integrated Critical-Mode PFC and Quasi-Resonant Current-Mode PWM Controller Features Integrated PFC and Flyback Controller Critical-Mode PFC Controller Zero-Current Detection for PFC Stage Quasi-Resonant Operation for PWM Stage Internal Minimum t OFF 8 µs for QR PWM Stage Internal 10 ms Soft-Start for PWM Brownout Protection High / Low Line Over-Power Compensation Auto-Recovery Over-Current Protection Auto-Recovery Open-Loop Protection Externally Latch Triggering (RT Pin) Adjustable Over-Temperature Latched (RT Pin) VDD Pin and Output Voltage OVP (Latched) Internal Over-Temperature Shutdown (140°C) Applications AC/DC NB Adapters Open-Frame SMPS Battery Charger Description The highly integrated FAN6921AMR combines a Power Factor Correction (PFC) controller and a Quasi- Resonant PWM controller. Integration provides cost- effect design and allows for fewer external components. For PFC, FAN6921AMR uses a controlled on-time technique to provide a regulated DC output voltage and to perform natural power factor correction. An innovative THD optimizer reduces input current distortion at zero- crossing duration to improve THD performance. For PWM, FAN6921AMR provides several functions to enhance power system performance: valley detection, green-mode operation, high / low line over-power compensation. Protection functions include secondary- side open-loop and over-current with auto-recovery protection, external latch triggering, adjustable over- temperature protection by the RT pin and external NTC resistor, internal over-temperature shutdown, VDD pin OVP, DET pin over-voltage for output OVP, and brown- in / out for AC input voltage UVP. The FAN6921AMR controller is available in a 16-pin, small-outline package (SOP). Ordering Information Part Number OLP Mode Operating Temperature Range Package Packing Method FAN6921AMRMY Recovery -40°C to +105°C 16-Pin, Small-Outline Package (SOP) Tape & Reel |
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