Application note for implementing TEA1721AT in design

[tkoha]

I need to build a fly-back converter with 2 isolated outputs and with an input range of 19 - 150Vdc. It also needs to have a VERY no-load consumption.

I was therefore looking at the TEA1721 family.

Is there a tool or application note that can help me with this design?

[guoweisun]

Hi

That's not easy for design this  by use one stage power solution because the input range is more special.

You can use one stage BOOST to improve input voltage into 150V or above,then second stage use the normal fly-back or QR FLYBACK controller to get the isolation solution.

You can calculate by following attached calculate sheet. for QR FLY-BACK  topology.

Hope this could help！