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buck inductor losses

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yes increasing turns too much makes other problems.
i use sendust powder core.its better than ferrite because gapped ferrite's prameters like DC bias characteristics are unknown
 

i use sendust powder core.its better than ferrite because gapped ferrite's parameters like DC bias characteristics are unknown
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Ferrites have lower losses than powder cores and are preferred for high frequency applications.

Ferrite DC bias characteristic isn't unknown. Some simulation tools like Ferroxcube SFDT 2010 are estimating realistically.
 

FvM said:
Ferrites have lower losses than powder cores and are preferred for high frequency applications.

Ferrite DC bias characteristic isn't unknown. Some simulation tools like Ferroxcube SFDT 2010 are estimating realistically.
Click to expand...
i talk about gapped ferrite as inductor!
in compare with powder core gapped ferrite have more complicated calculations.look at this graph.a little change in current causes huge permability drop.compare it with other powder cores
Screenshot_2019-12-30-12-36-02-092_com.google.android.apps.docs.jpg
gapped ferrite may have huge gap losses and using powder core can be better idea.
 

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