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TPS92310: Datasheet correction

Renan Santos Adriano
Genius 16510 points
Part Number: TPS92310

Hi Team,

Good day.

Can you confirm that the datasheet of the TPS92310 controller On page 13 (transformer turn ratio), the calculation is wrong (see photo below)?

Can you also provide additional information concerning n?

Regards,

Renan

  • 0
    TI__Mastermind 28655 points

    Hello Renan,

    The equations appear to have incorrect answers.  These are the boundary equations I would look at a design to see what makes sense for 'n', turns ratio.  Running close to either boundary is not ideal since design margin is limited at either point. The turns ratio will depend on the application.  There are a lot of variables to think about when choosing 'n', MOSFET VDS rating and secondary rectifier diode voltage rating are two.  There are many more and why I would create a design spreadsheet when calculating a transformer design.  For just the transformer there is flux level in the magnetic, wire losses, winding window, winding area, safety spacing, physical size, core losses etc.

    Best Regards,

  • 0 in reply to Irwin Nederbragt
    TI__Mastermind 28655 points

    Hello Renan,

    I haven’t heard back from you, I’m assuming you were able to resolve your issue.
    If not, just post a reply below (or create a new thread if the thread has locked due to time-out)

    Best Regards,