4/28/2023 0 Comments Pspice voltage loop inductorI think for voltage mode it concerns the amplitude of the internal ramp waveform, inside the controller. Then find the modulator transfer function. Shovel them in and multiply those poles and zeroes to give your power stage transfer function. Note: The inductors in PSpice have an infinite bandwidth. So find w0 for each of your poles and zeros. (such as a Schmidt trigger built out of switches) then such loops should include capacitances. If you are in voltage mode, (or current mode), then there can be no doubt what is the power stage transfer function for a Buck….If voltage mode, and in CCM, then it will be comprised of the following poles and zeroes… The control to output transfer function is everything in the loop except the error amplifier…ie, it’s the modulator transfer function, and the power stage transfer function. This can only be in DCM.as the attached shows
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