hey Markku, 

A lot of time you can just search in the e2e searchbar for the part number and find earlier discussions that will include an inserted TINA file, like this one - 

Here I used the 2018 model, there is an update to 2020 but not sure the Zol is resonant enough in that one, 

Hello Markku,

In addition to Michael's comment, you can find the models in the product page for the device. Scroll down to the "Design & Development" section then click on "Design tools & simulation".

Note this will only allow you to download the 2020 version of the device.

Best,

Hasan Babiker

Hi,

Could you please also explain how to add to is to Tina's library?

I founded THS4551.lib and sboma28b.tsm but do I need both and where I will copy it/them?

Br; Markku

Morning Markku

I will let Hasan answer your model library question (but I will say the library you can access inside of TINA comes with the TINA version you have and cannot be added to - I recall asking DesignSoft if they were going to update the library to newer devices in the V11 I have, nope - but they will have some updates in later versions you can buy). Normally we just create .TSC files from existing sim efforts and copy the models  (click the symbol to highlight, then CNTL-C) over to new sim files inside of TINA. 

Anyway, back on the Zol question - my earlier comments were really THS4561 related as that was the part de jure for this next AudioXpress article (dropping the THS4561 into the MFB ckt on the OPA1637 EVM board - needed to run some phase margin sims where you really need the resonant Zol to pick up the degradation due the MFB feedback C). 

Searching for older THS4551 Zol test files I find quite a lot, and reconstructing some of that history - 

Here is the original July 2016 release model test - at that time I was running with the large caps at the output pins which required me to remove the internal feedback C's manually, here is that sim and then file - what I am looking for is that 2nd order resonance at higher F - showing magnitude here but it is really the phase that is important -

Zol test THS4551 RTM model.TSC

The newer 2019 model does not show that resonance as the GWL model template I believe is only RC in the Zol, should have the RLC to match cadence sims - 

Anyway, Hassan's comment on looking in the product folder under tools and simulations is normally correct, but if I drill down into the THS4551 online I recall now I was asked to add sim files for a lot of the datasheet examples by figure #. So there is a lot there, I suspect if you opened any of these .TSC files they would have the July 2016 original model in them, not really spotting a TINA reference design with the 2019 update - must be there somewhere - I think this device is the only one showing all these datasheet circuit TINA files (no one else foolish enough to undertake that). 

Hello Markku,

I agree with Michael, it would be best to avoid the models that are provided as part of TINA. The simplest method is downloading the .TSC file and copying the model into you schematic. You can also use the "New Macro Wizard" under tools in TINA to convert your .lib file for use in TINA, here is a video on how to do this. 

In regards to the THS4551 itself, as Michael mentioned there are many circuits that represent the figures in the datasheet. These circuits which mention the figure at the end use the 2016 model. The 2020 versions of the THS4551 are listed as, "THS4551DGK Unencrypted TINA-TI Model Package (Rev. C)" & "THS4551 PSPICE Model (Rev. A)"

Best,

Hasan Babiker

Yea I saw that one Hassan, did not look at as it seemed to imply it had the package model in it - that is unusual. Also, virtually all of these more recent FDA models are unencrypted so why call that out? 

Hey Michael,

Not sure why it was named this way specifically, we do still get questions asking for an unencrypted version of the model when this is already the case. So possibly to make this as apparent as possible. But yes, I'm not aware of any HSAMPS models that are currently encrypted or any plans to encrypt models in the future.  

Best,

Hasan Babiker