TPS562211: TINA Simulation Error

Hi Zachary,

I will analyze this case and give you reply by next week!

BRs

Zixu

Hi,

When I use PSPICE I am trying to simulate an entire power tree and it is taking multiple hours to simulate which is why I wanted to switch. Also, in PSPICE I am having trouble with my load transience simulation. 

Hi Zachary,

Since we have email contact, I will close the case and communicate via email.

BRs

Zixu

Zixu-

Why are we creating unencrypted models if they are not portable to other simulators? 

We need to be able to support our customers on other simulators besides PSPICE. 

Customers could use not only TINA, but Micro-CAP, LTSPICE, or Simetrix.  

-Steve

Please help me solve this case of designing zeta converter

CS1365777

Here is is link of that case:

e2e.ti.com/.../zeta-converter-design

Please help me solve the problem. I have been waiting for 4 weeks 

The thread you are referring to appears to be closed, so I believe no one is working on it.

That said, the LMR2365 will not work.  To apply a buck IC as a Zeta you need a device that can tolerate Vin+Vout across it's supply terminals, and be able to switch at least 2x the load current.

I hope to release a paper on this very topic sometime next year.

Your specs listed would indicate a 48W power converter.  That would be a lot for a Zeta built out of a integrated buck IC.  There are reference designs on TI.com for the Zeta made from discrete controller and FETs that would be more appropriate.  See PMP9581, https://www.ti.com/tool/PMP9581_REVC

Thanks for your reply.

Sorry to say, I have tried this one too on Tina TI. But this doesn't work on the software. 

I just downloaded ran the TINA TI reference design for the LM5116 that LMP9581 is based on, see: https://www.ti.com/lit/tsc/snvm051

Download and run this file, make sure it works on your computer untouched.

Once you have it working as downloaded from the website, you can start modifying it into the Zeta per PMP9581. 

That's how I would approach this problem- you may run into simulation issues later, but at least you would have something to go on and you could post your project/progress and simulation files to the Forum support the LM5116.

Would you please provide me the simulation file of Tina TI, Pspice, LTSpice or other software designed by yourself. Because I have tried this one in Tina TI and this doesn't work for me 

Ok I am on it and will report you about the results.

Thanks alot 

If you need additional help, please use the forum supporting the LM5116.  Good luck!

Hi Antenna,

We do not have model that is compatible to all simulators.

For further question, please create new post for answer.

BRs

Zixu

Zeta.pdfZeta Converter.TSC

Hi Usman,

For question related with LMR2365, please create new post for answer!

BRs

Zixu

Hi Antenna,

Thanks for your help.

I have attached the files of your proposed design. 

But the problem is that it gives 2 Volts output but I want 24V constant regulated output.

I hope you will understand.

Hi Usman,

Since your question is not related with TPS562211, for further communication, please contact Antenna via email. I will close the case.

BRs

Zixu

Please let me know about his email address so that he could assist me

Hi Usman,

Under such circumstance, please create new post for your question on e2e for answer!

BRs

Zixu

Ok Zixu. You may close the case

OK, I will close the case.