Single-Stage Flyback and Boundary-Mode PFC Controller
FL7930B — Single-Stage Flyback and Boundary-Mode PFC Controller for Lighting
October 2013
FL7930B Single-Stage Flyback...
Description
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 3.5 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 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. 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.
FL7930B provides over-voltage protect...
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