FAN6921AMRMY Datasheet PDF - ON Semiconductor

●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).

●Features

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● Integrated PFC and Flyback Controller

● Critical-Mode PFC Controller

● Zero-Current Detection for PFC Stage

● Quasi-Resonant Operation for PWM Stage

● Internal Minimum tOFF 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)