FAN6921MLMY Datasheet PDF - Fairchild

●Description

●The highly integrated FAN6921ML combines a Power Factor Correction (PFC) controller and a QuasiResonant PWM controller. Integration provides cost effect design and allows for fewer external components. For PFC, FAN6921ML uses a controlled on-time technique to provide a regulated DC output voltage and to perform natural power factor correction. With an innovative THD optimizer, FAN6921ML can reduce input current distortion at zero-crossing duration to

●improve THD performance.

●Features

●ƒ Integrated PFC and Flyback Controller

●ƒ Critical Mode PFC Controller

●ƒ Zero-Current Detection for PFC Stage

●ƒ Quasi-Resonant Operation for PWM Stage

●ƒ Internal Minimum toff 8µs for QR PWM Stage

●ƒ Internal 10ms Soft-Start for PWM

●ƒ Brownout Protection

●ƒ H/L Line Over-Power Compensation (OPC)

●ƒ Latched Protection (FB Pin)

●− Over-Power/ Overload Protection

●− Short-Circuit Protection

●− Open-Loop Protection

●ƒ Externally Latch Triggering (RT Pin)

●ƒ Adjustable Over-Temperature Latched (RT Pin)

●ƒ VDD Pin & Output Voltage OVP (Latched)

●ƒ Internal Temperature Shutdown (140°C)

●Applications

●ƒ AC/DC NB Adapters

●ƒ Open-Frame SMPS

●ƒ Battery Charger