你好,
TPS54531 做DCDC 输入24V,输出5V, 设计上后端的PH对地 的二极管正向电流偏小 (最大500mA),反向电压30V。
请问这个二极管的作用是什么? 目前现象是 有时会没有输出,有时TPS54531 会烧掉,是否跟这个二极管有关系,其他部分跟参考电路一样。
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