客户近期在用TI的TPS54260时,遇到输入在5V多一点的时候,输出5V不稳定的现象,输出电流不到1A,TPS54260输出5V时,最低要求输入是多少?
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hI:
这个芯片并不能100%duty工作, 如果需要尽量低的输入电压,可以按照如下文档改善电路: 
你可以把频率降下来,输入就可以比较低,0.5V的压差应该问题不大,具体能到多小孩要看你板子的布局以及工作环境