Hi,
在TPS62903的手册中写着最短导通时间50ns左右,

但是在手册下面找到一张图,FPWM mode,输入12V,输出1.2V,频率2.5MHz。根据计算Ton为40ns,小于上图标注的50ns。该应用是否存在风险?

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HI
50ns是最小典型值,所以出现40nS也可能正常输出,但是不建议,建议调高。