FAN7930BMX Datasheet PDF - Fairchild

Description

●The FAN7930B 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 information, it saves the power loss of an input voltage sensing network necessary for a current-mode CRM PFC controller.

●Features

●ƒ  Additional OVP Detection Pin

●ƒ  Input Voltage Absent Detection Circuit

●ƒ  Maximum Switching Frequency Limitation

●ƒ  Internal Soft-Start and Overshoot-less Control

●ƒ  Internal Total Harmonic Distortion (THD) Optimizer

●ƒ  Precise Adjustable Output Over-Voltage Protection

●ƒ  Open-Feedback Protection and Disable Function

●ƒ  Zero Current Detector

●ƒ  150μs Internal Startup Timer

●ƒ  MOSFET Over-Current Protection

●ƒ  Under-Voltage Lockout with 3.5V Hysteresis

●ƒ  Low Startup and Operating Current

●ƒ  Totem-Pole Output with High State Clamp

●ƒ  +500/-800mA Peak Gate Drive Current

●ƒ  8-Pin Small Outline Package (SOP)

●Applications

●ƒ  Adapter

●ƒ  Ballast

●ƒ  LCD TV, CRT TV

●ƒ  SMPS