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the design for flyback transformer of PFM

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dcj50105

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Helleo All,
I want to design a PFM tranformer in the flyback converter,how can I calculate it? who can help to do it? thank you very much
Best regards!
 

ted

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You might also look at h*tp://www.eetkorea.com/ARTICLES/2002APR/2002APR16_PD_POW_AN.PDF
A demo version of the Magnetics Designer is free from Intusoft. (h*tp://www.intusoft.com/mag.htm)

If you want to study the theory and Spice models, this might be useful: h*tp://www.beigebag.com/case_xfrmer_3.htm

I hope this helps
Ted
 

dcj50105

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Hello! everyone
The input voltage is boosted to 400V by PFCconverter, to improve the efficency of the overall syetem, I choose the variable frequency flyback mode in the DC-DCconverter, and 100kHz@full load;how can I calculate accuratly the specification of the transformer.now I want more about the theory of calculation for transformer.
thank you!
best regards!
 

goodboy_pl

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www.powerint.com has a spreed shhet which simplifyes flyback transformer design.

Also its application notes are very useful, read them in depth specially those abouse transformer construction.

BEST!
 

tryagain

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powerint ,IR,TI all have classic application note about it
 

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