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FL7930C Datasheet Pfc Controller

Manufacturer: onsemi

Overview: FL7930C — Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting FL7930C Single-Stage Flyback and Boundary-Mode PFC Controller for.

General Description

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

Key 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.

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