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LM26420: Inductor type

K.Hamamoto
Guru 12155 points
Part Number: LM26420

Hi

At page 22, it is mentioned as below.

. Ferrite based inductors are preferred to minimize core losses when operating with the frequencies used by the LM26420.

This means the inductor is recommended the ferrite type.

Is the metal core type possible to use ?

I understand the metal core is small inductor value but it can be used for large current application. And it has high core losses. (Rac?)

Is there any other concerns if we use the metal core type?

Best Regards,

Koji Hamamoto

  • 0
    TI__Genius 10860 points

    Hi Hamamoto-san,

    we recommend the inductors in the datasheet based on best performance for our devices. 

    However, the customer is free to choose other inductors based on their preferences. Still, it's then up to them to check whether the actual performance meets their needs. In case possible I recommend to follow the recommendation or otherwise test the resulting performance upfront during evaluation phase as the inductor characteristic will impact the buck converter performance.

    Best regards,

    Britta

  • 0 in reply to Britta Ruelander
    TI__Genius 10860 points

    Hi Hamamoto-san,

    please note that I will close this thread due to inactivity.

    Any reply to this post will re-open the thread in case you need further assistance.

    Best regards,

    Britta

  • 0 in reply to Britta Ruelander
    Guru 12155 points

    Hi Britta-san,

    Thank you and I am sorry for the delay in my response.

    Please close this thread.

    Best Regards,

    Koji Hamamoto