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关于40055低压保护的问题。为何做不到启动电压是8V,我的板子最低启动电压要10V才开始工作。

Other Parts Discussed in Thread: TPS40055

Rt=820K,Rkff=270K,1脚和3脚之间的电阻是330K。输出电压5V15A,12V输入5V输出满载效率94%。就是启动电压问题无法解决。请各位老大帮忙分析,谢谢!