Hello and thank you for your support,
In reference design PMP10351 there is Transformer T1 which is not specified and I can not find that part number. There is part number G144071LF from GCI Technologies but something is wrong with their website so I couldn't find a datasheet for that transformer. I have sent a request to that company for more details about their product but I didn't get any respond. So please could we get more specification about transformer used in that design?