Hi Kelvin,
I have a suspicion that the .bode does not actually run the transient analysis and apply the perturbation one frequency at a time. I guess some fancy algorithm like multitone is used instead Multi-Tone AC Analysis Theory
Reasons:
I noticed some weird result and clear cut differences between using .bode and .meas fra + .step.
perhaps you can find my mistake for how I implement .bode in this file.
FRA_SMPS_STUDY.zip.txt (2.5 KB)
Thanks
Arief,