The word "minimum" answers you. If you use the minimum, then you real inductor may have some less inductance than expected and hence your circuit is not working as expected. They are using some safety margins.Further more, in every example design I have looked at they calculate the inductor and if we pretend that the minimum value came out as 10µH then they are choosing something like 22µH or even 47µH, I know that they are deliberately choosing a much larger inductor but that behavioured makes me ask, is there any likely problem in using the calculated minimum inductor value for a buck or boost converter?
Even making the value and with + tolerance, they are in series and hence both must be prepared for the required current rating.If you look at this, it has the required µH butnot the required current, while this has the required current rating while not the required µH rating. But two of those in series would almost make the value
You can not assume that. You have to be prepared for the worst case. If the worst case does not suit your need, then, do not use it.if assuming that the tolerances isn't negative...
Warpspeed, it's current and only current that saturates an inductor. Perhaps you mean to emphasize that this means the peak of the ripple current rather than the average load current.?
Same with a transformer which saturates when the magnetizing current reaches a specific value.
More specifically it's flux respectively V*s integral which directly relates to mT core induction.The only thing that can saturate a transformer is voltage.
Particularly frequency and magnitude of AC magnetization.there is far more to designing magnetics for switching power supplies than just the inductance and the dc rated current
The only thing that can saturate a transformer is voltage. As the primary voltage increases the flux increases. At some point the flux can no longer increase as the voltage increases and the primary stops acting like an inductor and starts acting like a wire and the current rises quickly. With ferrite this is a fairly sharp knee.
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