Loop response of Type II compensator

[hao004]

Hi. I am designing a Type II compensator using https://www.infineon.com/dgdl/an-1162.pdf?fileId=5546d462533600a40153559a8e17111a. Equations used are shown below. But when I plot the Bode plot of the compensator and compare it with the Bode plot attached in the application note on page 13, the gain seems to be 30 instead of 0 dB at the crossover frequency. Is this normal?

 

[FvM]

Page 13 is showing loop gain, Fs is loop unity gain frequency. You are plotting compensator gain which is only part of the loop gain. Review application note more thoroughly.