I have a customer that is using the TPS68281 device and they would like to use a larger inductor than specified in the datasheet: a value between 1-3µH. They have 5V in, 3.3V out at 10-50mA.
The datasheet "Inductor Selection" section goes through how to calculate the minimum inductor current but I cannot find anyway to determine if a specific inductor value is too high. I know that with higher inductor values the inductor ripple current will decrease and the load current at which the device switches into power save mode will lower. I looked through a couple white papers like the following on DCS control and couldn't find an answer to this question in the papers either.
Thanks in advance!