FPGA PCB Design Review - Phil's Lab #85

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Design review of Xilinx Spartan 7 FPGA-based PCB, including triple buck converter, memory, USB-power, and I/O headers. Going through schematic and PCB, giving tips and guidelines throughout.
Altium design review competition: www.altium.com/altium-365/des...
[SUPPORT]
Free trial of Altium Designer: www.altium.com/yt/philslab
Patreon: / phils94
Mixed-signal hardware design course: phils-lab-shop.fedevel.education
[GIT]
GitHub: github.com/pms67
[WEBSITE]
www.phils-lab.net
[TIMESTAMPS]
00:00 Introduction
00:43 Altium Designer Free Trial
01:00 Design Review Competition (Altium)
01:21 Project Overview
02:08 Schematic #1 - Memory
03:57 Schematic #2 - Power Supply
08:17 Schematic #3 - I/O
09:56 Schematic #4 - FPGA Power and Decoupling
11:17 Schematic #5 - FPGA Banks
13:09 Schematic #6 - FPGA Configuration
16:04 PCB #1 - Overview, Layers, Stack-Up
18:48 PCB #2 - Switching Regulator, Design Rules, Via Sizing, Power
25:24 PCB #3 - Board Outline, Mounting Holes
27:17 PCB #4 - FPGA Power and Decoupling
28:16 PCB #5 - Transfer Vias
28:49 PCB #6 - Differential Pairs
30:10 PCB #7 - Clearance, Copper Pours, Power Planes
31:23 PCB #8 - Silkscreen, USB-C
32:45 Outro

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Опубликовано:

30 июл 2024

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Комментарии : 72

@petergagliano3756 Год назад

Thank you Phil for reviewing my board! Some really great advice that I'm going to start applying immediately to both modify this design and future fpga designs

@TheDigital19 Год назад

also double check Q1 (wrong symbol, wrong orientation)

@remy- Год назад

Thank you Peter and Phil, this was a very interesting movie!

@PhilsLab Год назад

Thanks for sending it in, Pietro - good job overall on the design :)

@isaacclark9825 Год назад

Thank you for being the sacrificial anode.

@piranha1337 Год назад

Thank you Peter!

@bikothewolf Год назад

Really enjoying the design reviews, always informative.

@PhilsLab Год назад

Thanks, Biko - glad to hear that. Should continue at about one a month :)

@bikothewolf Год назад

@@PhilsLab Awesome! 👍

@rb8049 Год назад

Create a Phil’s PCB checklist. Laminate and sell it. Maybe a laminated PCB guide with simple examples, typical numbers, etc. You could have ones for different applications too. You could charge $19.99 for a guide. Seems reasonable and worth it.

@piranha1337 Год назад

Put the checklist on a PCB :D

@StreuB1 Год назад

Agreed. "Best Practices" design guides or "speed notes" are super helpful. Generally an engineer will build their own speed notes over the early years in their career, learning from the more Sr. engineers and from their bumps along the road. Though having something to start out with would be really handy for those who don't have someone to learn from and are on their own or have coworkers who aren't as friendly or helpful.

@PhilsLab Год назад

That would indeed be a good idea :) I was planning on making a video on PCB/schematic design checklists, but would be good to have it in PDF-form at least as well!

@asmi06 Год назад

@@PhilsLab Xilinx actually provides a very good schematic checklist (xmp277). It's absolutely worth using for any designs with 7 series FPGAs, as it prevents many silly mistakes.

@krakamak Год назад

@@PhilsLab yes please!

@ZayMeisters Год назад

Thank you! I have been looking doing my first FPGA design and this video definitely helped. Hopefully enough people filled that survey so you can make that FPGA design course as well!

@PhilsLab Год назад

Glad to hear that! Yes, quite a number of people have registered their interest. I'm currently developing the course :)

@asmi06 Год назад

One lesson I've learnt the hard way regarding silkscreen - ALWAYS put a revision number on a board! Reality is you are going to have multiple revisions of the same PCB, and often it's hard to tell them apart visually (especially high-speed PCBs like those with FPGA), so it's entirely possible (and this actually happened to me!) for you to mistakenly assemble an older revision and waste a lot of time and effort to "transplant" parts onto a proper revision PCB.

@Peter_S_ Год назад

I'm in that club too. Part numbering for the board which includes the rev level is an absolute must.

@WinterCircuits Год назад

Again, another very helpful informative video! Always learn a thing or ten from your videos and incorporate the good practices in my designs. Thanks Phil!

@PhilsLab Год назад

Thank you - glad to hear that!

@asmi06 Год назад

That clock connection is definitely going to be a problem. I actually made it a rule to always create some sort of design in Vivado first before getting on with schematics and layout because it allows you to confirm that pinout you've chosen will actually work.

@jaroslavpsenicka Год назад

the 330R resistor is connected to 3V3 while the 2K is at 5V rail so the 2K value might eventually be good if we want approx the same brightness (around 9:20)

@bartek153 Год назад

I bloody enjoy them reviews! Keep the coming Phil :)

@Letsroutepcb Год назад

Thank you Philip for kind of amazing informative video. Would love to see more 😊

@PhilsLab Год назад

Thanks, Moshiur!

@piranha1337 Год назад

I simply love your design reviews!

@PhilsLab Год назад

Thank you!

@kaukospots Год назад

This is really making me want to learn Altium, even as a hobbyist

@zyeborm Год назад

Not to detract from altium but have you tried kicad 6? it has only recently been released (last few months) and it's got a lot of nice things in it. It's pretty good especially for the price lol.

@rick_er2481 Год назад

Awesome and insightful review, thank you

@PhilsLab Год назад

Thanks, Rick!

@luizoctaviomartini8174 Год назад

Watching your videos makes me wanna make some popcorn to go along with it... Seriously, in a sea of boredom and useless content in RU-vid your channel is a treasure chest of information. Well explained and detailed information, in a concise format. Love it! In the moment I'm not that focused on FPGAs but maybe kinda looking to go into them into the future for some adventures with ELS and DLS spectroscopy... But I think I can get the ADC sampling rates I might need with some register manipulation on faster-ish microcontrollers. Anyways, thanks for your content! :)

@PhilsLab Год назад

Thank you very much, Luiz! Yeah, a lot of the comments I make in the design review videos should be transferrable to many other designs. Most of my designs aren't FPGA-based either but it's nice to mix it up here and there.

@badarjahangirkayani6196 Год назад

Great video as always.

@volkanozdemir44 Год назад

GREAT VIDEO!

@RafaGmod Год назад

oh god, what an excellent class!

@LimbaZero Год назад

Also one thing that I recommend to do is vendor checklist for FPGA or family. They usually check common pitfalls there

@__--JY-Moe--__ Год назад

I like using the part templates, usually in the part library folders. in most AAA softwares!! & copying the pdf info is paramount also!! good luck all !! thanks again!

@davidgaspar8566 Год назад

At 6m30, Q1 is wired in reverse. The LED will be always on because of the internal diode of the mosfet. Thank you for your videos.

@tharukanayanajith3510 Год назад

Thank you🙏🙏🙏

@majedm.alharthi2034 Год назад

Thank you for the very informative review! Did you make a video about stitching vias, and polygon pours (For ground)?

@PhilsLab Год назад

Thanks, Majed. I covered that a tiny bit in my "Vias 101" video.

@zyeborm Год назад

My only critique of your review would be don't apologise so much ;-) Especially for the same thing (jumping around) repeatedly. It's all good mate. That said, thanks for making this, I learnt a bunch of little things that have always bugged me about my boards. That "something" that is the difference between a good looking board and...what I do lol.

@eledikohabib3369 Год назад

Thank you for the overview Philip...if you have time maybe we can have some DDR3 fan-out....thank you

@PhilsLab Год назад

Thanks for watching. Planning on making a video covering DDR* pretty soon!

@deangreenhough3479 Год назад

Great review Phil. Is the FPGA course going to be ready soon? 🍿 I believe it will be after Xmas?

@PhilsLab Год назад

Thanks, Dean! Aim is to have the new course released by January/February :)

@mohammadshebli162 Год назад

Hello Phil, I would like to ask where I can find the starting point on designing FPGA board, I would like to do a design and test it I would really appreciate any help regarding this manner

@Program2live Год назад

Great video, be good if you made a video on making a drone (out of a pcb), be interesting to see what you could do!

@thai19995 Год назад

Hello Phil, thanks for the video. I noticed that there isn't a top-schematic in the project, wouldn't Altium complain about this? As I remember, Altium doesn't allow multiple schematics with the same top level, is this still true? Thank you again for a very nice and informative video :)

@stavrosnikiforos7798 Год назад

Hi Phil. Any update on the Advanced PCB course with the FPGA you were planning to release? Any chance it will be released before Christmas? That would be awesome. Thank you in advance.

@PhilsLab Год назад

Hi Stavros, Working on it at the moment! Release is looking to be around February 2023.

@mrechbreger Год назад

Maybe I missed it within the video, fiducials are missing?

@Peter_S_ Год назад

Good catch.

@stavrosnikiforos7798 Год назад

Is this design available on GitHub or online? I would like to download it and follow the video in parallel for learning purposes.

@PhilsLab Год назад

I don't think so. I'll ask Pietro if he'd be up for releasing his files publicly.

@Quantum_Dots Год назад

I'm interested in review of Pixhawk Autopilot board

@rick_er2481 Год назад

Is it opensource?

@andrewfraser2760 Год назад

Though not mentioned by Phil, I would also make sure your component designators are on the silkscreen also.

@frankbose544 Год назад

its very hard to work on a design by yourself without over looking things

@PhilsLab Год назад

Agreed!

@arcover2048 Год назад

The MOSFET Q1 seems to be the wrong way around

@SuperAstraeus Год назад

I've noticed you are using metric system in other videos. Is there a specific reason for that?

@PhilsLab Год назад

I normally use metric for everything. However, Altium schematics are typically 'normed' to 100mil grids.

@SuperAstraeus Год назад

@@PhilsLab thank you, your videos helps me alot. Keep up good work.

@kdn6827 Год назад

Hi Phil, Please upload your mixed signal design course on Udemy. People outside US had to pay alot due to conversion in local currency. Please consider uploading on Udemy so that worldwide students can enroll in it.