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按照WEBENCH工具设计的DC-DC降压器，芯片信号是TPS53353,输入电压为5V，输出电压为1V，接上电阻负载，输出电流在7A以下，都很正常。
输出电流大于7A后，电感会滋滋叫，电感引脚波形异常，这是什么原因呢？
