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TPS241X问题?

Other Parts Discussed in Thread: TPS2412

现在使用的是TPS2412但是驱动不了MOS,不知为啥,同时问一下,TPS2412,2413等的区别,一般用于输出MOS驱动是用线性的还是ON/OFF行的?望得到答复?

  • 可以先断开驱动回路,测一下GATE脚看输出电平。如果此时可以拉高说明确实是驱动不够,看一下是不是MOS栅极电容太大。

    TPS241x之间的区别可以参考数据手册第一页。线性的类似于LDO的特性,ON/OFF是当达到保护点时直接关断。