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TPS54620: 输入电流相关问题

Part Number: TPS54620

比如tps54620降压芯片,我想要输入17V,输出13v,6A。用webench设计,此时效率96%,输入电流平均值为4.83A。而根据数据手册中“输入电容器的选择”相关章节,可计算输入纹波电流约为2.545A。那么是不是意味着我的供电电源必须满足17V,驱动电流至少要4.83A+2.545A/2=6.10A?还是说只要满足4.83A输入电流平均值的供电电源即可?