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.
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.