【产品特性】‧Compatible with Traditional TRIAC Control (No need to change existing lamp infrastructure: wall switch & wire)
‧Cost-Effective Solution without Input Bulk Capacitor and Feedback Circuitry
‧Accurate Constant-Current (CC) Control, Independent Online Voltage, Output Voltage, Magnetizing Inductance Variation
‧Low Startup Current: 20 mA.
‧Low Operating Current: 5 mA
‧Cycle-by-Cycle Current Limiting , Over-Temperature Protection with Auto Restart
‧Open-LED Protection , Short-LED Protection , Application Voltage Range: 80 VAC ~ 308 VAC
【产品应用】‧LED Lighting System
【文字介绍】This highly integrated PWM controller, FL6630, provides several features to enhance the performance of singlestage flyback converters. The proprietary topology, TRUECURRENT®, enables the simplified circuit design for LED lighting applications. TRIAC dimming is smoothly managed by dimming brightness control without flicker. By using single-stage topology with primary-side regulation, an LED lighting board can be implemented with few external components and minimized cost. It does not require an input bulk capacitor or feedback circuitry. To implement good power factor and low total harmonic distortion, constant on-time control is utilized with an external capacitor connected to the COMI pin. Precise constant-current control regulates accurateoutput current versus changes in input voltage and output voltage. The operating frequency is proportionally changed by the output voltage to guarantee Discontinuous Conduction Mode (DCM) operation with higher efficiency and simpler design. The FL6630 provides protections such as open-LED, short-LED, and over-temperature protections. Current-limit level is automatically reduced to minimize output current andprotect external components in a short-LED condition.
The FL6630 controller is available in an 8-pin Small Outline Package (SOP).