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TPS40211如何降低输入电压且实现正常升压

Other Parts Discussed in Thread: TPS40211

我这里参考TPS40211的datasheet做了一个Damon板,测试时:VIN=14V,输入电流3.2A,VOUT=39.81V,输出电流1.1A,负载36.2欧姆。现在想让VIN降到10V时仍能以输出电压40V左右正常工作,但是不清楚具体该调什么,请问该如何调