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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
V
IN
-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)
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
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