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关于LM5116空载问题

Other Parts Discussed in Thread: CSD19532Q5B

目标:输入60V,输出12V10A
MOS用的是TI CSD19532Q5B,输入60V,电流有52mA,空载空耗3W左右,IC和MOS管发烫严重,G极驱动波形上升沿有畸变,不知道是哪里有问题?