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5V升12V 空载能输出12V，带载（42欧50W电阻）后电压拉到5V左右，电路根据手册上推荐进行搭建的，请问下各位大神是什么原因呢
转电源论坛
你好，
你根据你的电感和频率参数校验一下你的内部开关管有没有超过1A。
