THVD8000: Altium schematic and PCB component files

Hi Max,

For the component files we don't really have much to share on components that aren't made by us (which is basically everything on the board except the THVD8000 itself). You may be able to get the footprints/models for these parts on like Digikey or Mouser - I will include the EVM files (altium, gerbers, ODB,pick and place, and various pdfs of schematic/layout prints)  and BOM. Like I don't have a local copy of the models - everything is checked/in out of a main repository that I can't share. 

For the THVD8000 model you can go to the product page and scroll down to the design and development section and click the Ultra Librarian link - from there you will have multiple options to download the schematic symbol,  layout, and 3D models:

This can be used for all of TI's parts - but what exactly is available may vary a bit. 

The EVM files are below - but I do have a few caveats to mention:

This design is not universal - the EVM itself will not be able to test all applications - so you can't use this design as a catch-all for every specific use case. The EVM itself is optimized for point to point applications (2 nodes, straight cable between them) with a modulation frequency of 1MHz to 5MHz where the data rate is <= f_mod/10. This is is a relatively narrow use case band for this device (it can have an f_mod of 125KHz to 5MHz - so anything <1MHz is not advisable without modification). The reason the EVM doesn't support a full range of application use cases is because of the wide variance in inductor selection depending on application - inductance values can vary a lot (uH to mH range) depending  on modulation frequency and number of nodes on the bus (THVD8000 is 1/8th unit load which normally means up to 256 nodes, but due to the coupling network loading you probably won't get much past 100 without needing some type of repeater).

Also there may be EMI/EMC concerns with the EVM as there are a lot of unintentional radiators on the board (this is for ease of prototyping - the trade-off is that they become less EMI/EMC friendly - so direct copying is generally unadvised) 

1881.THVD8000EVM_FILES.zip

To help simplify the process of determining if the EVM without modification is okay for your specific application please see the excel based calculator attached below. One note is that the excel calculator actually uses an equation slightly more accurate than the datasheet equation because the datasheet doesn't account for loading of the other THVD8000's on the bus - this is because at lower node counts (which most applications seem to be <= 10 nodes which would be "low") the equations give extremely similar answers - however for higher density loading the other THVD8000's on the bus will start to have an impact. This calculator can be used to quickly determine sizing needs. However - the inductance and capacitance values listed are effective numbers - not nominal - so they need to account for derating and tolerance as well (i.e. the nominal value will need to be higher than the calculated effective values) 

2474.THVD80x0_Design_Calculator.xlsx

Please let me know if you have any other questions and I will see what I can do!

Best,

Parker Dodson