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I am trying to run spice simulations of a few switch mode power supplies with the PSPICE models provided. I am running into the issue that they are all encrypted and I can't run any analysis. I am attempting to do this with TPS63031, TPS63036, and TPS62808 (or TPS62802). I'm under the impression that you can decrypt these files, is that correct?
Hi Sophie:
Here are some models: http://www.ti.com/product/TPS63036/toolssoftware http://www.ti.com/product/TPS63060/toolssoftware
You could use TINA to do the simulation.
The TPS63036 files are still encrypted, TINA will only run a transient simulation. I need to be able to do noise analysis.
Hi Sophie:
I need to check with team if there is available mode for us. But I afraid it may take some time. Please wait with patient. Thanks for your understanding.
Hi Sophie:
I'm checking with the team for the model.
May I know what noise you care about and what's your expectations of the results are.
I would like to look at the switching noise on the output (output voltage ripple), from charging and discharging the inductor. I’d like to model this output ripple at different loads if the model accurately varies by load. I’d also like to model the two modes of operation (PWM and ‘high efficiency’) again, assuming the model provides this capability. If possible, I want to test out filters that handle the designated switching frequency (PWM mode) but also see if I can filter effectively in ‘high efficiency’ mode.
Hi Sophie:
I have quickly do a simulation. The design based TINA could works. However, there alway a gap between the simulation and practice.
I'll recommmed you to do the test based the EVM. Or we could help do some test for you if there is not too much test point. (buy you may need a wait as it's holiday here.)
Thank you, please let me know when you can release the models. I will be buying eval boards to do physical testing in the meantime.
Best,
Sophie
Hello Sophie,
The model is modelling the transient behavior of the device. It does not reflect the output voltage ripple or the PFM mode in a way that you could design a noise filter based on this model. We do not plan to release an unencrypted model of TPS63036.
Best regards,
Brigitte