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lm3481 SEPIC电路问题 急急

Other Parts Discussed in Thread: LM3481

参考TI的设计工具用LM3481搭建了12V 5A输出的电路,空载时输出电压正常,在负载端加入30ohm时,输出用万用表测量只有5V,示波器测量为连续的脉冲波形。而且有时候会把mosfet烧坏。另外输出电容使用的是100uf。