| 描述 | Infineon公司的XDPL8221是属于XDPTM数字功率系列产品,提供单独的PFC激励和反激两级控制,以得到包括有恒压(CV),恒流(CC)和有限功率(LP)组合的输出,用于LED照明.器件的数字引擎提供了可配置的工作参数和保护模式.这就方便了相位设计,降低了硬件原型的数量而得到了更多产品种类.精确的初级边输出电压和电流控制而省去了次级边反馈回路.UART接口控制驱动器输出和读操作状态,无闪烁输出调光,模拟驱动电流降低到1%,两级设计消除了输出的AC波纹,支持通用的AC和DC输入电压(90 V rms - 305 V rms),效率高达90%,总谐波失真(THD)小于15%,正常负载是可低至30%,集成的600V高压起动单元保证了不快速时间去点亮LED(< 250 ms),可配置自适应温度保护,并具有多种保护特别性,主要用在LED照明的AC/DC LED驱动器.本文介绍了XDPL8221主要特性,简化功能框图,典型应用电路以及参考设计REF-XDPL8221-U100W主要特性和电指标,各分部主要特性,以及电路图,材料清单和PCB设计图.
The XDPL8221 digital controller IC belongs to the Infineon XDPTM digital power family. It provides an independent PFC boost and flyback dual-stage control to achieve an output that combines Constant Voltage (CV), Constant Current (CC) and Limited Power (LP) for LED luminaires. The IC is available in a PG-DSO-16 package and supports many features with only a minimal requirement of external components. The digital engine of the IC offers the possibility to configure operational parameters and protection modes. This eases the design phase and enables great product variety with a reduced number of hardware variants. Accurate primary-side output voltage and current control eliminates a secondary-side fe.. |
