Cxle86172 is a single-stage, source power factor correction, high-precision primary side feedback led constant current control chip. It is suitable for flyback isolation LED constant current power supply with 85vac-265vac full range input voltage. Cxle86172 integrated active power factor
Digital correction circuit can achieve high power factor and low total harmonic distortion. Due to the critical continuous mode of inductor current, the power MOS transistor is in the zero current on state, the switching loss can be reduced, and the utilization ratio of transformer is also high. Cxle86172 adopts a special current sampling mechanism, which works in the original side feedback mode. Without secondary feedback circuit, it can achieve high-precision output constant current control, save the system cost and volume, and improve the system reliability. With advanced line voltage and load compensation technology, cxle86172 can achieve excellent line voltage regulation and load regulation. The line voltage compensation coefficient can also be
Flexible adjustment through external components. The cxle86172 has built-in multiple protection functions to enhance the system reliability, including LED open circuit protection, led short circuit protection, chip power supply over-voltage protection, under voltage protection, current sampling resistance open circuit protection and cycle by cycle current limiting