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why I am getting a cut bode plot of peak current mode control of buck converter (demos)?

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SimTec 2018-2-20

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编辑： SimTec 2018-2-20

hello everyones,

I am trying to get the frequency response of the demos given Buck Converter with Peak Current Control and using as reference the Buck Converter with AC Sweep Analysis. however I am getting weir result as you can see in teh attached file. I am not getting all the gain value and phase value of all frequencies which means I miss something in using the AC sweep block.

any help is welcome

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Birdman 2018-2-20

File can not be unzipped.

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SimTec 2018-2-20

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编辑：SimTec 2018-2-20

buck_acsweep.zip

here it is

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SimTec 2018-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/383650-why-i-am-getting-a-cut-bode-plot-of-peak-current-mode-control-of-buck-converter-demos#answer_306119

编辑：SimTec 2018-2-20

buck_acsweep_1.mdl

this is my model. I have tried as well to use the linear analysis tool and still I AM GETTING errors-

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