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FL7930B - Single-Stage Flyback and Boundary-Mode PFC Controller

General Description

The FL7930B 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.

Key Features

  • Additional OVP Detection Pin.
  • 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FL7930B — Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting October 2013 FL7930B Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting Features  Additional OVP Detection Pin  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.