电感的选择

Hi Dialog,
From Page 12 of AN-B-061 DA1468x Application hardware design guidelines v1.3.pdf
An inductor having a saturation current
of at least 1A and a RDC of maximum 0.1 Ohm guarantees a good performance
Could you please help further explain why require the inductor having a saturation current
of at least 1A and a RDC of maximum 0.1 Ohm ?

thanks!