LM5022-Q1: Average simulation.

Hello Abdelrhaffar,

Thanks for reaching out to us via e2e.

I will need to forward your question to my colleague who is more familiar with PSpice than I am.

Tomorrow will be a bank holiday for us, so it will take until Friday or maybe Monday until he will be able to get back to you.

Best regards
Harry

Hi Abdelrhaffar,

Thank you very much for your patience.

For LM5022, we only have this one AVG model for TINA and PSpice for TI which defaults with a Boost converter.
There is no separate AVG for Flyback or SEPIC topologies.

The adjustable parameters that are forwarded into the model are fixed as well and cannot be changed from a single inductor to a coupled SEPIC inductor.

Best regards,
Niklas

hi Niklas,

there is no separate AVG simulation for these topologies although the Controle to output transfer function is not the same?

thank you,  

Hi,

Sadly yes. We have specific AVG model for LM5022 SEPIC topology.
I am very sorry for this inconvenience.

Best regards,
Niklas

Hi Niklas, 

i check the control LM5022 from the website of TI in section of Design tools and Simulation, is there an equation to fixe or to find the value of the parameters specially the CIN, COUT and L1 because in my application?

Q2: in the simulation (LM5022 TINA-TI Average Reference Design (Rev. A) ) , that i update it there's no ESR of Cout.     

the question is who can i fix the values of her parameters.?

if you can send me a demonstration to calculate them?

Thank you,

Best regards,

Abdelrhaffar 

Hi Abdelrhaffar,

It is possible to change the ESR value of the output caps in the external capacitor component.
However, please not that the simulation model will not provide useful data for a SEPIC controller.

The AVG simulation model is created for Boost topology, therefore simulation results will not provide any value for a SEPIC design.

Best regards,
Niklas