FL7930C - Fairchild Semiconductor

FL7930C Single-Stage Flyback and Boundary-Mode PFC Controller

The FL7930C is an active power factor correction (PFC) controller for boost PFC applications that operate in critical conduction mode (CRM). It uses a voltage-mode PWM that compares an internal ramp signal with the error amplifier output to generate a MOSFET turn-off signal. Because the voltage-mode CRM PFC controller does not need rectified AC line voltage .

Features

 PFC-Ready Signal
 VIN-Absent Detection
 Maximum Switching Frequency Limitation
 Internal Soft-Start and Startup without Overshoot
 Internal Total Harmonic Distortion (THD) Optimizer
 Precise Adjustable Output Over-Voltage Protection
 Open-Feedback Protection and Disable Function
 Zero-Current Detector (ZCD)
 150 μs Internal Startup Timer
 MOSFET Over-Current Protection (OCP)
 Under-Voltage Lockout with 3.5 V Hysteresis
 Low Startup and Operating Current
 Totem-Pole Output with High State Clamp
 +500/-800 mA Peak Gate Drive Current
 8-Pin, Small Outline Package (SOP) Application.