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soft start电容容值的选择

Other Parts Discussed in Thread: TPS54426

大家好,我在用TPS54426这颗芯片时,SS pin需要外接电容,默认值是3300pf的电容,实测输出波形上升沿太平坦,因此我将ss电容调整到470pf,实测ok,但是datasheet里面没有具体说明SS的外接电容范围,因此请教大家是否有好的建议?谢谢!