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LSF0101: How to simulate with LSF0101 PSPICE Transient Model in HSPICE

Sanjeev Ghildiyal1
Prodigy 60 points
Part Number: LSF0101
Other Parts Discussed in Thread: TXB0302, TINA-TI

Hi

I wish to simulate with LSF0101 PSPICE Transient Model in HSPICE (N-2017.12-SP2). 

Please help with the documentation on connectivity and how to feed input stimulus.

Is there a user guide on simulating with their encrypted spice model? 

Thanks
Sanjeev G

  • 0
    TI__Guru 59940 points

    Sanjeev,

    Pspice model file can run on Cadence Orcad and TINA (possibly) but cant run on Hspice platform.

    Only Hspice encrypted / unencrypted models can run on Hspice simulators without issues.

  • 0 in reply to ShreyasRao
    Prodigy 60 points

    Hi Shreyas

    Thanks for your response. I tried importing LSF0101 spice model in TINA but it was not able to recognize it. 

    Regards

    Sanjeev G

  • 0 in reply to Sanjeev Ghildiyal1
    TI__Expert 6680 points

    Hi Sanjeev,

    The PSpice transient model for that device is encrypted and will need to be used with PSpice (pspice.com).

    You might try out this model below and see if it works for you:

    4760.0741.LSF0101.TSC

    Thanks!

    Chad Crosby

  • 0 in reply to Chad Crosby
    Prodigy 60 points

    Hi Chad

    Thanks for sharing the model. I was able to simulate with this. Please find attached foil with simulation result summary. 

    Please note that for the bus where we need the level translator, there is always a pull down (225Ohms to 650ohms) on the host side. 

    Can you please confirm if the the results from simulation is correct?

    I have an additional request. We  wish to check with TI device TXB0302. Can you please help with TINA SPICE model for this device ?

    Regards

    Sanjeev G

    Simulations_2020ww20p3_LSF0101_TI.pptx 

  • 0 in reply to Sanjeev Ghildiyal1
    TI__Expert 6680 points

    Hi Sanjeev,

    I would highly recommend using the encrypted model along with pspice (there is a free trial for the software) as the model is exceedingly accurate compared to the model I sent for TINA-TI.

    That said: the simulations do look correct. The internals of the LSF translator is simply a pass transistor, and thus don't supply any current to the lines. If you could remove the pulldown on the host side, the LSF would best fit for your purpose; however, in the current configuration, the LSF may not be the best fit.

    If you're interested to learn more about how the LSF0101 works, you can watch our Logic Minute video series about it here: https://training.ti.com/node/1139264

    As for the TXB family of devices: we are unable to provide PSpice models for them at this time.

    Thanks!

    Chad Crosby

  • 0 in reply to Chad Crosby
    Prodigy 60 points

    Hi Chad

    Thanks for your response.

    Regards

    Sanjeev G