• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 63 subscribers
  • Views 1056 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS2379: TPS2379 datasheet and symlink on SLVA498

Vyacheslav Verkhovin
Prodigy 20 points
Part Number: TPS2379

Hi! TPS2379 datasheet has link on http://www.ti.com/lit/pdf/SLVA498

12.1.1 Related Documentation
For related documentation see the following:
• Implementing a 60-W, End-to-End PoE System, SLVA498

But this document is not present on the site. Where can I find it?

  • 0
    TI__Expert 5615 points
    Vyacheslav,

    We recently made the decision to pull this application note from the internet as it referenced a part we no longer recommend for new designs. Thank you for pointing out this error in the TPS2379 datasheet. We will work to get it corrected.

    That aside, it looks like you are starting a new PoE design with the intent of sending 60W and receiving 51W (or more)? I suggest you start by watching the following video for some initial training on our "high power PoE" solutions --> training.ti.com/high-power-poe-design-considerations. At 5:27 into the video, Darwin Fernandez (our PoE PD Application Engineer) goes into discussion about how to use the TPS2379 to achieve non-compliant (to the standard) in UPOE designs that meet your request.

    What power level are you working to achieve? Do you care about IEEE802.3bt compliance (new standard - coming soon)? Are you open to other IC solutions or have you selected the TPS2379 for other reasons?

    Please tell us more about your need as we recently released a suite of new IEEE802.3bt-ready solutions including the TPS2373-4 and TPS2372-4.

    Please provide some more background and we can help get you started,
  • 0 in reply to Thomas Lewis
    TI__Expert 5615 points
    Vyacheslav,

    I wanted to check in with this thread as we have heard back from you in some time. Please let us know if there is anything else we can do to assist...otherwise, we are going to assume this thread is resolved.

    Thank you for your interest in PoE products from TI,
  • 0 in reply to Thomas Lewis
    Prodigy 20 points

    I want to change an existing scheme that uses TPS2379 (without changing the controller). In the data sheet there is the item "8.3.4.1 External Boost Circuit (Q1, Q2, and R BLST) Considerations", in which there is a reference to the SLVA498. As I recall, this document contained a description of how to calculate these components. Now this information is not available. SLVA498 contained information not only about "high-power PoE" (which is why you deleted this document as containing duplicate information), but it also contained information about the calculation of components for TPS2379. I calculated these values myself, but I wanted to compare my calculation with the recommendations from SLVA498.

    In general, deleting even outdated information is a bad idea, since if this information is no longer needed by you, it may be needed by someone else. It is better just to mark this information as "obsolete" and provide a link to the actual version.

    Regards, Vyacheslav.

  • 0 in reply to Vyacheslav Verkhovin
    TI__Expert 5615 points

    Vyacheslav,

    Thank you for explaining your situation more clearly. I have attached the application note here for your convenience. I believe section #5 is what you seek.

    Our decision to remove this application note from the general website was not made lightly and we plan to update it as soon as resources become available to do so.  My sincere apologies for the inconvenience this caused.

    Best Regards,slva498.pdf