[edit] I wish I had you as a professor in engineering school. This is the absolute best explanation of the design of an SMPS that I've ever seen. Thank you for creating LTSPICE (I quickly moved from MacSPICE to LTSPICE once I found it) and giving your thought process for tweaking the design. 14:00 - Ok. So, you can skip to the demo here; but, I encourage you to at least watch from the beginning up to at least 8:06 before jumping ahead.

Amazing presentation. The last five minutes is gold on the explanation of feedback!!

Thank you very much Mike Engelhardt. There is no doubt that you are one of the geniuses of our time both in writing great simulation software and #1 in understanding analog circuits and especially in SMPS.

Oh my, this is The Maker! Thank you, thank you, thank you.

Mr. Engelhardt, I would be very happy if you would have been my teacher. Unfortunately it would be impossible because in 1975 I was just studying Electronics and I only heard about circuit simulation. I knew Spice many years later. Excelent!

This guy is a an OG !!

this guy is a legend!

very impressive

If the FF cap has a series resistor that all current goes through its value can be chosen so that stability testing becomes an easy check. Typically the 1st R of three Rs, IFF FF cap used. if placed at ground, then it needs to be reduced to a value proportional to the FB ratio. This is a small value, this is not an issue, but if the top location of R string is used for small stability sweep injection, then it usually can be made to be 50 ohms, 75 ohms, 100 ohms. This makes the signal coupling straight forward, with a matched AC impedance. This is not that important, if understood, but it is a rabbit hole that can be avoided without dealing with all the nuances if done with these issues in context to each other.

I recently found out there are caps that have voltage dependent capacity(not as a selling point but as a side-effect). I don't know why someone would use them but is it possible to simulate such caps?

Search/autocomplete functionality in the diode/transistor selection list dialogs please!

So basically he is saying "You shall have no other gods besides LTSpice"? ... 😂

Where is the super expert mode edit part? 😂

Despite LTSpice has kind of ugly interface, I like it because of its obviousity and simplicity.