EI25 Core

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Dear all
I have designed a smps with TNY268 device. The "PI Expert 8" software have chosen EE19 core. But i have an EI25 core at hand and when i wanted to change the core there is no entry for using EI25 and there is other core sizes options. How can i force it to use EI25 core? I have attached the design file. You should change its name to “5v_2.5A.uds”
Thanks in advance.

AttachmentSize
5v_2.5A .pdf132 KB

The EI25 core is electrically equivalent to EE25. So in the solutions filter dialog (when optimization begins) in the placed where you have the core range selection select EE25 as both core start and core end value. This will force software to design only with EE25 core.