Hello,
I am designing a Flyback Transformer similar as the data sheet provided by webench.
In that datasheet I have a doubt about the AWG selection of the secondary winding of transformer.
The rating of the flyback converter is 19V, 3.43A at output side. That's why I think the secondary winding's wire have sufficient current carrying capacity to conduct that much of current.
But in the data sheet provided by webench, they are using 2 strands of 25AWG wire. The current carrying capacity of 25AWG wire is 0.457A. Hence the total current carrying capacity will become 2 times 0.457A i.e. 0.914A which is very much lower than 3.43A.
Could you please help me to explain how this gauge selection (25AWG) is made and provide relevant formulas which was used in webench designer tool for gauge selection of transformer windings?
Attachments:
Data Sheet of Transformer: 4188.B66423G0000X187.pdf
AWG Chart: 1348.American Wire Gauge Conductor Size Table.pdf
Regards,
Raj
