Product Summary

The FAN7527BMX is an active power factor correction (PFC) controller for boost PFC applications that operates in critical conduction mode (CRM). It uses the voltage mode PWM that compares an internal ramp signal with the error amplifier output to generate MOSFET turn-off signal. Since the FAN7527BMX does not need rectified AC line voltage information, it saves the power loss of the input voltage sensing network necessary for the current mode CRM PFC controller. The FAN7527BMX provides many protection functions, such as over voltage protection, open-feedback protection, overcurrent protection, and under-voltage lockout protection. The applications of the FAN7527BMX include Adapter, Ballast, LCD TV, CRT TV, SMPS.

Parametrics

FAN7527BMX absolute maximum ratings: (1)Supply Voltage, VCC: VZ V; (2)Peak Drive Output Current, IOH, IOL: -800 to +500 mA; (3)Driver Output Clamping Diodes VO > VCC or VO < -0.3V, Iclamp: ±10 mA; (4)Detector Clamping Diodes, Idet: ±10 mA; (5)Error Amplifier, MOT, CS Input Voltages, VIN: -0.3 to 6 V; (6)Operating Junction Temperature, TJ: 150℃; (7)Operating Temperature Range, TA: -40 to 125℃; (8)Storage Temperature Range, TSTG: -65 to 150℃; (9)ESD Capability, Human Body Model, VESD_HBM: 2.0 kV; (10)ESD Capability, Machine Model, VESD_MM: 300 V; (11)ESD Capability, Charged Device Model, VESD_CDM: 500V.

Features

FAN7527BMX features: (1)Low Total Harmonic Distortion (THD); (2)Precise Adjustable Output Over-Voltage Protection; (3)Open-Feedback Protection and Disable Function; (4)Zero Current Detector; (5)150μs Internal Start-up Timer; (6)MOSFET Over-Current Protection; (7)Under-Voltage Lockout with 3.5V Hysteresis; (8)Low Start-up (40μA) and Operating Current (1.5mA); (9)Totem Pole Output with High State Clamp; (10)+500/-800mA Peak Gate Drive Current; (11)8-Pin DIP or 8-Pin SOP.

Diagrams

FAN7527BMX block diagram

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