FL7930CMX

FL7930C — Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting October 2013 FL7930C Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting 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 State Clamp  +500/-800 mA Peak Gate Drive Current  8-Pin, Small Outline Package (SOP) Applications  Ballast  General LED Lighting  Industrial, Commercial, and Residential Fixtures  Outdoor Lighting: Street, Roadway, Parking, Construction, Ornamental LED Lighting Fixtures 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. FL7930C provides over-voltage protection (OVP), o...