How to run bode plot in MPSmart?

Simulation Tools and GUIs
1

Hi Support,

Is there any example or application note that walks through how to run bode plot in MPSmart? Take MPQ8633B design resource for an example, I can find Vinstartup, loadtransient for POSCAP and CERAMIC from website. How can I utilize the existing schematic and model to run bode plot? Please help to provide a guide.

2

Hello tim.peng,

MPSmart is based on SIMetrix/SIMPLIS. Please see this guide from SIMPLIS Parts: Bode Plot Probe w/ Measurements (simetrix.co.uk). Don’t forget to run AC analysis.

Thank you,
Vinh Tran
Field Applications Engineer
Monolithic Power Systems

3

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The Bode plot simulation of MPQ8633B using the official steady-state model yields inaccurate results. What parameters/settings should I adjust for correct Bode measurement?