求大神指导,TPS40210的反馈电阻R1在400Ω时,输入电流就跳变了,R2大于400Ω时,输入电流在0.01~0.03A左右,但是当电阻小于或等于400Ω时,输入电流就变成了0.12~0.20A……
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求大神指导,TPS40210的反馈电阻R1在400Ω时,输入电流就跳变了,R2大于400Ω时,输入电流在0.01~0.03A左右,但是当电阻小于或等于400Ω时,输入电流就变成了0.12~0.20A……