Power Delivery Network Simulation Deep Dive - Part Two

[@ArjunAKed22d005]

Half way through the video and it's already amazing. Really appreciating these videos!! Thank you Zach!!

[@Parvi_]

Awesome, waiting for the third video! Thanks

[@sigfreed11]

So interesting, thanks for the video! Keep the PDN videos coming 👍🏻

[@Zachariah-Peterson]

Videos on ferrites for isolating PDN rails are coming in hot!

[@gankankg]

As always, great video

[@AltiumAcademy]

Glad you enjoyed it

[@nikosant03]

Thank you for your great video Zach. If the inductance increases the impedance over high frequencies then we should avoid stitching vias in our designs?

[@Zachariah-Peterson]

You have to look at where that inductance was placed, it was in series along the power net. Stitching vias are used to link together different regions of copper to the same ground net.

[@sourabhyadav1328]

@@Zachariah-Peterson Fhhh

[@優さん-n7m]

How did the first massive dip in the frequency response become flat? This was a very theoretical instruction.

[@Zachariah-Peterson]

It's by adding some capacitance that provides low impedance at the edges of that dip. Normally following the "3 capacitor" rule might not give you a flat response unless you pay attention to the SRF value at your target frequencies, but the frequency response can be flattened out if you know where the SRF value is located. Datasheets for caps that could be used in high speed designs will contain this data.

[@mohamedtalha9790]

I am very interested in your videos, I hope you complete this series, but I have a student license and I can't find PDN analyzer, Is it covered by my license ,,, ??

[@Zachariah-Peterson]

Hi Mohamed, The PDN Analyzer extension is only for DC analysis, you don't need it for the AC analysis I'm doing here in SPICE. The PDN Analyzer is an add-on and I do not think it is included in student licenses.

[@mohamedtalha9790]

@@Zachariah-Peterson thanks

[@優さん-n7m]

@@Zachariah-Peterson since he is a student, can't he just crack the software to learn it? This way he will make you money by being corporate Altium user down the line.

[@asmi06]

It also shows that having Vcore power regulators off-board is a very bad idea. But modern PCs still do it, compensating for this by obscene amount of capacitors, both on the package and on the motherboard.

[@Zachariah-Peterson]

Yes definitely, and for the longest time they do motherboards on 4 layers so they can only get so much plane capacitance

[@sourabhyadav1328]

Hamen drone connector banana sikhana hai