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#pcblayout#decouplingcapacitors#pdn

PCB Layout & Decoupling - Explained why it's so complicated (Part 1)

Robert Feranec

262K subscribers • 10 videos on Hallway

YouTube
  • Recommended by 2 people: 2 in engineering communities.
  • Presented by Robert Feranec

Intermediate. Assumes working knowledge.

88K views6 years ago2 recommendations

HardwareElectronicsEmbedded systems

Robert Feranec explains the theory and practice behind PCB power distribution networks and why decoupling capacitor placement is critical.

Change the way how you look at powers on your board. Part 2: PCB Layout & Decoupling - Understanding Impedance youtu.be/Tt8X6_maj6c Part 3: PCB Layout & Decoupling - Measuring and Fixing youtu.be/hZSOhVdzqZk Big THANK YOU to: - Florian Hämmerle linkedin.com/in/florian-h%C3%A4mmerle-a8304152/?originalSubd… - Eric Bogatin linkedin.com/in/eric-bogatin-368860/ ------------------------------------------------------ Would you like to support me in what I do? It's simple: - you will help me a LOT, when you sign up for one of our Schematic and PCB Design online courses at fedevel.com/academy/ The other ways to support me in what I do are: - Subscribe to this channel - support me through Patreon page patreon.com/robertferanec - sign up for my Udemy course, Learn to Design Your Own Boards udemy.com/learn-to-design-your-own-boards/ - send me an email and/or leave a positive comment - watch and like the videos :) - read my Welldone Blog at fedevel.com/welldoneblog/ - spread a word about FEDEVEL Academy It is much appreciated. Thank you, - Robert

Why it's here

2 people recommend this

What people say. Recommended as an excellent explanation of how bypass capacitor values and PCB layout affect microcontroller stability.

u/__deetz__in r/embedded • Recommends

On “Bypass capacitor value”

There is an amazing video by Robert Feranec who shows how in theory (and practice) these values are dependent on PCB layout and actual workload of the MCU (signals it generates). Which is the reason you see whole arrays of bypass caps on some sensitive circuits. link to this video But that's the pro-Level. 1Davide is right with his answer for the bog-standard setup.
4View on Reddit

u/Priton-CEin r/embedded • Recommends

On “Can multiple (STM32) MCUs share the same VDD to ground capacitor array”

Thank you so much for that detailed answer. So in essence my assumption is incorrect and the primary purpose is just to supply current when the MCU experiences sudden load? It has nothing to do with spikes in the power supply? Yea no that is a very good reason to not do that ever xD Is that why the schematic calls out the smaller cap to be directly connected to one of the VDD pins? That makes a lot of sense tho. (Reading the PCB guidelines the datasheet does call it out but just for the ADC capacitors.) Makes sense [video Do you mean this video by chance? Its quite long but the introduction seemed quite promising so I will make sure to watch both parts.
3View on Reddit