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tps40210开关管老被烧坏

jiamei zhang
Prodigy 160 points


开关管用的是csd19535,   0.15毫欧的电阻用的是0.1欧姆的水泥电阻来代替，输出电容找不到耐压值大于50v的两个47uf电容并联改用100uf，0.27uf改用0.22uf，不知什么原因开关管老被烧坏，求指导，谢谢您的耐心解答！