Infineon XDPL8220 50W电源参考设计
Infineon公司的XDPL8220是高度集成的PFC和反激(FB)控制器,能节省外接元件和优化谐波性能.通用输入AC电压(90-305VAC)或(90-30VDC),可用功率范围20W-150W,效率高达90%,总谐波失真小于15%,多模式工作(恒流(CC)/恒压(CV)/限功率(LP)),工作温度-40 °C 到 85 °C,主要用在LED照明的电子控制器装置(ECG).本文介绍了XDPL8220主要特性,简化功能框图,典型应用电路和XDPL8220 50W参考设计主要特性和指标,电路图,材料清单和PCB设计图,扼流圈(Choke)电路图和变压器电路图.
XDPL8220 is a highly integrated next-generation device combining a boundary mode PFC plus a quasi-resonantFB controller with primary-side regulation. The integration of these functions enables saving of external partsand optimizes performance by harmonized operation of the two stages.
XDPL8220 uses a constant on-time scheme with a THD improvement algorithm to provide a high power factorand excellent THD performance.
With its unique control scheme of CV, CC and LP, the LED driver designer is provided with a large degree offlexibility and can utilize the system hardware to its limits.
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