最近用LM3445做了一个非隔离的方案:120VAC输入,4.5W,电流60mA ,发现Q2温度大约在80摄氏度,抓DS之间波形为方波51K,Q2使用4N60 ,Rds=2ohm,帮忙分析有没有方法降低MOS的温度,谢谢!
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