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Calculation for core loss in output inductors of DER-472 and DER-484 (Two transistor forwards)

Posted by: treez on

Hi,
Please can you show your workings for core loss for the output inductors in DER484 and DER472?
I calculate 0.392W and 0.776W respectively. (using formulae in Mag-Inc powder core catalog)
But DER484 and DER472 calculates 0.62W and 1.28W respectively

Comments

Submitted by PI-Kenobi on 01/14/2021

Hi,
Thank you for reaching out. Upon review, we found that the core loss co-efficients used in this spreadsheet are different from what is suggested by Mag-Inc. We will perform a quick fix and update you soon.
Regards.