LM5035 半桥控制器不工作，图示按规格书pdf画的
输入是24vdc，输入电流28ma，芯片微热
VIN脚电压是23.5v
REF脚无电压（无短路现象），检查了UVLO脚为1.57v，OVP脚位0.25v，
芯片中间的脚也焊接了
就想不出查哪了？郁闷啊！
↧
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