quaternion
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ashish_chauhan said:are you getting oscillations noload and fullload both?
can you post the wave form also.
Also I would suggest you to check and tighten the simulation options for your simulator.
safwatonline said:1- try to increase the accuracy of simulator and number of points in AC analysis
2- try to check stability of the two loops separately first, then cut the two loops together
LvW said:This sounds confusing. You show us a diagram which looks like a BODE graph (gain vs. frequency) and at the same time you tell us that you have NOT performed an ac analysis ? Can you clarify this ?
Actually the load is a mono current pulse not pulses.safwatonline said:i think the ripples on the output are due to the current pulses u added at the output (i.e. not oscillation)
It is a feedforward stage that should add a LHP zero that elevates the phase again to compensate the loop, and the phase elevation appears in the phase response, also i uses the resistor in the figure only as I initially used it but all the results I put were with the resistor in the lower loop has zero value.safwatonline said:could u state more info about the lower loop as i think in high frequency it might affect the stability
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