TPS61175
文档上说最大输出电流是3A,
可是为什么WEBENCH上最大只能0.45A??
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简单的说,TPS61175为boost converter,集成开关管,该开关管的3A电流指的是输入电流,那么boost升压电路中,若输入10V,输出30V,效率90%,输入电流最大为3A,则输入功率最大为30W,30×90%=27W为输出功率,则输出电流为27/30=0.9A,所以输出电流随着输入输出电压的压差越大而越小。