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Forum: Analog Circuits LLC converter with TL431 Conpensation


Author: Patrick Lenzen (Guest)
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Hello,
I would like to simulate the LLC converter with TL431 controller and 
UCC25600.  How do I get the plant of the LLC converter incl. UCC25600? I 
would like to design the TL431 with the bode plot.

Thanks.
Patrick

Author: mark space (Guest)
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Did you try TIs simulator TINA?

Author: Patrick Lenzen (Guest)
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They have also no AC Analysis Model.

Author: mark space (Guest)
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Patrick Lenzen wrote:
> Hello,
> I would like to simulate the LLC converter with TL431 controller and
> UCC25600.  How do I get the plant of the LLC converter incl. UCC25600? I
> would like to design the TL431 with the bode plot.
>
> Thanks.
> Patrick

You can measure the plant gain in a test setup with various output 
loads.
Total plant gain is d(Iout) / d(VCOin).

Author: mark space (Guest)
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On the other hand it I assume you can derive the plant gain from the 
transition modell as well.

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