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No Pricing for Micrometals alloy powder torroids

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cupoftea

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Hi,
Cust has given us a not-working 500W PFC-FullBridge to get working.
They used two stacked HS-106160-2 torroids with 41 turns for PFC inductor.

Spec for PFC is 115vac, 60Hz, 220vout, 120khz, 550W

I find far less core loss is begotten when using the "same-size" MP-106169-2 or the MS-106160-2 torroids, and a more suitable inductance. (just different no of turns)

So why didnt the engineer use these better (for this application) torroids?
Are they more expensive?

HF-106160-2 torroid


..But the MP and MS versions are arent priced anywhere on the web.....how may we find out price?
 

Are you asking us to read their minds for you ?
--- Updated ---

Also: " ... I find far less core loss is begotten when using ... "

obtained is closer to what you mean
 
Are you asking us to read their minds for you ?
--- Updated ---

Also: " ... I find far less core loss is begotten when using ... "

obtained is closer to what you mean
Thou doth beget core loss of an aidant character when thou dost select finer wares.
 
Thanks, just heard it from the top.....Micrometals sendust is far cheaper as it contains less nickel....hot off the press.
 

Thou doth beget core loss of an aidant character when thou dost select finer wares.
...just wait for the next post, it will be in Ancient Latin....chiselled into a granite slab!
Thanks, and given the pricing factor now so evident.....we will all agree that there would be no reason to use a HF core instead of a MS core for a PFC application?
..sorry, the above is stuck in a quote box for some reason
 

This shows that an engineer must be across world nickel pricing in order to buy the right components. The attached shows that the Nickel price is on a steady increase.....this shows that boost PFCs will have to start using micrometals sendust, which contains less nickel than the other torroids.
Do you know of any other core materials that dont contain so much nickel?

This is bad news for common mode emc, where NiZn torroids are essential to be used, as MnZn torroids dont work at the high frequencies above 1MHz.

The rise in nickel price is doubtless due to its use in EV batteries......so this situation is going to get much much worse.
 

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