Right Half Plane Zero (RHPZ) in power electronics

[@alessiocaligiuri]

All your videos are very well done. They contain much technical and theoretical knowledge; I've been learning a lot thanks to your channel. Many thanks for sharing this kind of lesson!

[@sambenyaakov]

Thanks for kind note.

[@pvvikas]

Thank you Professor. Explanation in time domain is amazing!

[@sambenyaakov]

Thanks for comment.

[@kevinvanlandingham8938]

I agree

[@chenhu5317]

Thank you very much for your clear explanation, it really is helpful.

[@PSPS437]

Good video Dr. Sam. Thank you for sharing your nice great informational videos.

[@sambenyaakov]

Thanks

[@luizfischer9109]

Excellent explanation! Thank you professor.

[@sambenyaakov]

(-:

[@toolstipsandprojects1665]

Thank you! This is great.

[@sambenyaakov]

Thanks.

[@georgedaadouch1971]

Thanks..I would like to watch you explaining boost converters design criteria like coil,capacities and FET choosing

[@sambenyaakov]

Thanks for comment. Various videos in my channel (sam ben-yaakov) cover various aspects of this issue. I will consider doing a dedicated video on a Boost.

[@NNNILabs]

Ah, I've been waiting for this one.

[@sambenyaakov]

Happy to read that.

[@swarajpattoth9050]

Thank you!

[@sambenyaakov]

Thanks

[@catalin3407]

Hi Sam, I see that at 12:44 you make reference to LARGE SIGNAL input. I have a question that has been bothering me from some time now. When we test stability of converters in the time domain, we usually use the load step (i.e. use a current source at the output that changes abruptly.. you are also doing it at 15:25). In order to estimate the overshoot(or undershoot) of the voltage due to that load step, we still use the SMALL SIGNAL output impedance of the converter ! I do not understand that. How can we use the SMALL signal model with a LARGE signal test ? Isn't the load step a large signal quantity ? It would be nice if you can point me into the right direction (articles, books, explanation etc..).

[@sambenyaakov]

You are absolutely correct. I was using the step just for a sanity check as to whether the system is stable or not. Relating the magnitude of the step response to the small signal model is an approximation. See IEEExplore for large signal models of PWM converters.

[@JorgeSilva-em8pf]

Dear Professor. I chorus with the other viwers. But, what about "slope compensation", which is so popular with the CCM flyback converter, that ones which have on time over 50% of the overal switching period? B. R.

[@sambenyaakov]

Sub harmonic oscillation has nothing to do with what the presentation is all about.

[@JorgeSilva-em8pf]

Dear Professor. As you indication, the oscillation which could occur in CCM flyback converter with ton width over 50% is not due to unstable closed loop gain? Is it? B. R. Jorge

[@sambenyaakov]

NO it is not due to to unstable closed loop gain. See kzbin.info/www/bejne/nHeQm3l8hLyGj5Y

[@JorgeSilva-em8pf]

Thanks Professor. I will watch carefully the sent video. But since the Unitrode age, I was taught that the reazon for the sub-harmonic oscillations in that conditions was due the RHPZ, of course with a physics explanation either. But thanks again for shed light over this subject. B. R. Jorge

[@sambenyaakov]

You are mistaken. I do not believe that in any of Unitrode seminars they said that sub-harmonic oscillation is due the RHPZ,

[@efiyehezkel]

מאלף

[@sambenyaakov]

👍

[@seandafny]

7:00

[@sambenyaakov]

?