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Disparity between TPS40K and Switcherpro software

Ed Oram
Prodigy 10 points
Other Parts Discussed in Thread: TPS40055, TPS40060

I have an issue when checking a design using the two design packages - my design TPS40055 30V to 7V @ 10A in switcherpro provides me with significantly lower thermal stress for the sync FET than TPS40K software, independent calculations support the figures from TPS40K or show higher losses.

Also the Switcherpro is pessimistic on the number of FETs which can be safely driven (SI7116DN)


Is there a problem with the FET model or Switcherpro software?

Ed

  • 0
    TI__Intellectual 2710 points

    Regarding losses, we understand that some of the devices added to SwitcherPro in the past have some discrepancy when comparing to measured data.  we are working on imrpoving our efficiency model. It will be released in the next version v3.2 on July 24th.

    We are investigating the reason for the limitation on number of FETs for TPS40055. I will update this post soon. 

    Thanks,

    Hetal Joshi

    Senior Developer and Project Manager

    Analog eLab Design Center

    HPA Design Tools

    Texas Instruments, Inc.

     

    TI makes no warranties and assumes no liability for applications assistance or customer product design. You are fully responsible for all design decisions and engineering with regard to your products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning your designs.

  • 0
    Intellectual 450 points

    hello Ed, I hv been recommended to  use TPS40k Designer in order to create design using TPS40060/40061 (only this IC meets my requirement ). There is a Problem in downloading that SW, the link "www.ti.com/tps40kdesigner" seems to be broken. Can u plz confirm whether TPS40060/40061 is included in device list of TPS40k Designer or not ?. Kindly direct me towards the correct link where could i download that SW. These ICs are not a part of Switcher Pro v3.2 .

    Thanks

    waiting for reply

    Ahmed