Ferrite Core Transformer

[whatty]

Hi

I am an Electronic enthusiast i am working on a project where i needed to design a SMPS (ac to dc) using FLYBACK topology. i understood how the flyback converter works all those stuff but i couldn't find a proper design procedure for the ferrite core transformer for the converter please can you help how i can design a ferrite core transformer by sharing any document or links.

Thanks in advance

[moffy]

A flyback converter works by storing energy in the primary side inductance E = (Lp*Ip*Ip)/2 where Lp = Primary inductance and Ip = Peak Primary current and E = Energy in joules. The power transfer is E*f watts where f = the frequency of the primary pulses. You choose the turns ratio based somewhat on voltage in and out but that is a bit flexible with a flyback. Have you just tried Googling the term "How to design a flyback transformer"?

[whatty]

Hi thanks for the reply please can you share any detailed documents about this

[armandine2]

There is a pdf of Keith Billings I've seen which might be useful - not my area of expertise

 

[Zero999]

https://en.wikipedia.org/wiki/Flyback_converter?useskin=vector
https://media.monolithicpower.com/mps_cms_document/2/0/2021-aip-how-to-design-a-flyback-converter-in-seven-steps_r1.0.pdf
https://www.ti.com/seclit/ml/slup261/slup261.pdf