IRF2807烧管原因
仿照客户样机做了一个从12V升压到48V,1A的电源,现出现IRF2807烧管,我是初次做电源,请各位高手指点一下,附图. 2843801234771583.pdf
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@owen.tao
Q3和Q4的G极PWM波形如附图,是一样的.我有一点不明白,按说是推挽输出,应该波形是反相的,即一个导通,一个截止.我试过用一个IRF2807也能工作,升压至48V.
波形图
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@owen.tao
输入空载电流170ma
T1 8脚,7脚波形
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@power20071983
还有 你测一下DS 峰值多少?也没有吸收回路
D S波行如附图,Vp-p 38V
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