> does someone have a "how to" or a tutorial on how to design a SMPS
> tranformer ??



I'll repeat my last answer to a similar question.

_______________________________

Old but useful -

Philips semiconductors used to publish VERY extensive documentation on all
types of switching power supplies.
I haven't looked recently but I imagine these will be available somewhere on
their site.

There is lots of other stuff but try searching for -

-    "Transformer and choke design for forward-converter switched-mode power
supplies".
         EAB 33 no 3 pages 125 to 147 -

-    "Switched mode power supply transformer design nomograms"
        EAB 33 no 3

-    "Notes on SMPS transformer design nomograms"
       EAB 34 No 3 pp 123 - 136

Year unknown but rather old.
I think EAB is "Electronic Application Bulletin".



        Russell McMahon

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