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Sanyogita,
Thanks for your interest in TI here. Ulrich is off now on holiday so I will offer some additional assistance here.
To your question, you are correct -Isolated power designs do not include the "simulation" tab like you might see with our DC/DC converters. The transformer makes it quite complicated to simulate in an online environment. For simulation capability we do include Spice models in the "Tools and Software" tab of the product folder for each of the products like here for the UCC28722:
In general, webench for AC/DC and isolated power designs is used more to assist with product selection, component selection, estimates on efficiency, and providing calculated operating points of stresses like component voltage and current as well as component power losses.
Just in case you had not noticed other solutions, I see these as your main options here:
UCC28880: Integrated High Voltage Startup and High Voltage MOSFET-can use as isolated Flyback with opto coupler if you like.
UCC28910: Integrated High voltage Startup and HIgh voltage MOSFET-can use as isolated flyback with NO opto coupler for less components
UCC28720: what you were looking at here. No-opto PSR flyback with integrated HV startup FET for lower standby power/faster startup time than resistive startup.
UCC28722: same as UCC28720 but no integrated HV startup FET(uses resistive startup) but offered in a smaller, lower cost SOT-23 package(compared to SO-7 like UCC28720).
I'm not sure what voltage regulation you need. In general, the PSR type designs can achieve +/-5 Vout regulation while an opto-based controller can achieve +/-1%. The PSR has the advantage of fewer components though and longer lifetimes by removing the optocoupler.
I personally like the UCC28910 for your requirements because it's the most integrated solution. I found a UCC28910 design and attached the schematic here as a point of reference. This design was not built but you should be able to use it as a reference point for yourself during your design if you would like.
Regards,
John
Hello John,
Can you please send me the related documents to the schematic you have attached.
I need the BOM, Test results and any other relevant technical documents.
Regards,
Sanyogita Thakur.
Sanyogita,
That reference design PMP11787 wasn't built or tested so some components may require changing if you make a pcb and get built up. I have attached the preliminary BOM though here. (the schematic should be active so you can click on each component to see details as well.)
I suggest as a starting point you order the UCC28910 EVM which is 5V, 6W output.
This will give you a platform to test and potentially make modifications to prototype quickly.
I hope this helps.
Regards,