• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 2 answers
  • Subscribers 64 subscribers
  • Views 921 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

WEBENCH® Tools/LM5071: DC/DC Converter Simulation

Benjamin Wyrsch
Prodigy 60 points
Part Number: LM5071
Other Parts Discussed in Thread: TPS23753

Tool/software: WEBENCH® Design Tools

I would like to design a PoE powered device which can also powered from an auxiliary power input.

I have the following spec:

Vin = 12...56VDC

Vout = 12VDC, 1.0A

Isolated min. 1.5kV

There is the WEBENCH® Designer for designing your own DC/DC converter. This tool is great.

Can I use the tool also for the LM5071?

  • 0
    TI__Mastermind 40120 points

    Hi Benjamin,

    Unfortunately, our PoE PD products do not have such models. Typically, we will design, build, and test our PoE design to validate/optimize its performance, then release it as a TI design with a test report that shows its actual performance.

    For PoE typically when the adapter voltage is similar to the output voltage, the adapter is ORd at the secondary (with diodes or an oring controller) to save on efficiency.

  • 0 in reply to Darwin Fernandez
    Prodigy 60 points

    Thank you very much for the fast answer.

    So would you be able to design, build and test a PoE design based on our needs/requirements and release it as TI design?

    Our requirements:

    Vin = 12...56VDC

    Vout = 12VDC, 1.0A

    Isolated min. 1.5kV

    Or would you be able to assist and review our design (teamwork)?

  • 0 in reply to Benjamin Wyrsch
    TI__Genius 9230 points

    Hi Benjamin,

    Here's a 12V, 1A design, but is uses TPS23753. Attached is the schematic & BOM. Your isolation requirement is more a function of your board layout (the distance your planes are isolated) and whether you opt for ESD protection. We would be happy to review your design. Just reach out to us on E2E, & we can do it privately.

    Thanks,

    Thomas A.

    PMP8803_RevA_BOM.pdf

    PMP8803_RevA_SCH.pdf

  • 0 in reply to Thomas Amlee
    Prodigy 60 points

    Hi Thomas

    Thank you very much for all the information.

    The controller TPS23753 related application notes seems te be on a high level. Much better than the documents available for the LM5071. With that I think it should be no problem to do our own design.

    I will share privately my design with you for review purposes when it is finished.

    Kind regards,

    Benjamin