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AL1788 is a high performance AC/DC Power Factor Correction (PFC) controller targeting at LED lighting applications. Based on Primary Side Regulation (PSR) implementation, AL1788 does not require opto-coupler and any secondary feedback circuit to save overall BOM cost. It operates at Quasi-Resonant (QR) mode where MOSFET is turned on at the valley of the drain voltage, which minimizes switching loss to result in high efficiency.
General LED Lighting
Smart Connected LED Light Bulbs
Smart Connected LED Tubes, Panel Lights, Troffers, and Ceiling Lights
High PFC and low THD power supply
PSR Implementation Based on Flyback and Buck Topology
Universal AC Voltage Input for Constant Voltage (CV) Regulation
Valley Detection for Primary MOSFET Switch to Achieve Low Switching Loss and High Efficiency
High PF (>0.9) and Low THD (<20%) for Wide Loading Range (50% to Full Loading)
Under-Voltage Lockout (UVLO)
Over-Voltage Protection (OVP)
Over-Current Protection (OCP)
Output Short Protection (OSP)
Over-Temperature Protection (OTP): Thermal Shutdown and Auto Thermal Recovery