FAN7930B Overview
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 pares 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...
FAN7930B 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 ms Internal Startup Timer
- MOSFET Over-Current Protection (OCP)
