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LED恒流电源方案

Other Parts Discussed in Thread: LM3445
请问你们这边有提供LED照明方案吗?
具体要求如下:

一、硬性要求
1、带PWM调光功能(外设MCU发PWM波控制调光);
2、不频闪;
3、最大输出功率≥20W;

二、拓展要求(在满足基本要求前提下)
1、电源效率≥85%;
2、PF≥90%;
3、最大输出功率≥30W;
4、隔离式的;
5、带单级PFC。

谢谢。