# \#response

**URL:** https://forum.plexim.com/tag/response/155.md

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## [Small Signal/Impulse Response Analysis (Open Loop Response - Buck PWM converter)](https://forum.plexim.com/t/small-signal-impulse-response-analysis-open-loop-response-buck-pwm-converter/829)

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**Author:** [@Andrew](https://forum.plexim.com/u/Andrew)\
**Replies:** 1\
**Last updated:** [August 10, 2020, 3:36pm UTC](https://forum.plexim.com/t/small-signal-impulse-response-analysis-open-loop-response-buck-pwm-converter/829 "2020-08-10T15:36:30Z")

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Hello, I am trying to extract the open-loop response (control to output bode plot) of a Buck PWM converter from PLECS Simulation Environment and I run into a ‘problem’ when displaying the waveforms.The switching frequen…