1kW PFC Circuit Board Layout Review Part 3

[@manisteve862]

i was mesmerized by this one !! A lot of stuff i knew should be happening, but you pointing out the detail and the whys and alternatives was tremendously valuable to me. Thanks!

[@KissAnalog]

I appreciate you saying that, thank you for the feedback!

[@versace885]

Hi Eddie, You broke it down so well. Your explanation was clear. Thank you for taking the time to explain this in a way I could understand. This video was exemplary, thank you. 👍😀

[@KissAnalog]

Thanks so much for your great feedback!!

[@davidkclayton]

Hey Eddie, excellent video. One thing I noticed and it's a practice I like to is to mount the heat sinks parallel to an edge of the board that way you have the flexibility of either tying the heat to a chassis or increasing the size of the heat sink and also it keeps the heat further away from things like caps on the board. I'd be interested in what your thoughts are on this.

[@KissAnalog]

Thanks for your great question! I think that is a great idea - you can always put a heat spreader between the parts and the box. I actually place the SMD parts on the bottom of the board so that they can be mounted to a heat spreader or the bottom of the box. That way they can be placed in the circuit path and not placed with priority of the physical placement - if that makes sense.

[@northox]

Can’t wait for the next one.

[@KissAnalog]

Thanks so much! I appreciate you!!

[@pbaemedan]

Eddie, outstanding video, thank you.

[@KissAnalog]

Thanks so much!

[@YouveBeenCabadged]

Thanks - that was great. I'd love to see a follow-up showing how the movs fail. KZbin loves flames :)

[@KissAnalog]

Thanks for your feedback! I've done at least one video on MOVs - I think:) I'll cover this again soon;)

[@YouveBeenCabadged]

@@KissAnalog Oh wow - so you have. I didn't realize the back catalogue went back 6 whole years. Adding them to my playlist now - thanks!

[@KissAnalog]

That's awesome - thanks!!

[@michaelramos5243]

Hi eddie.. nice review.. keep it up, God bless

[@KissAnalog]

Thank you, I appreciate you!

[@frnkbooth6871]

All good points. Part 4 should show the output noise creating by not using balanced trace width at the switch node and random copper. I’m willing to bet the switching noise has to be in the hundreds of mv which can be dramatically reduced by care in layout.

[@KissAnalog]

Thanks for the great feedback! Yes - layout is critical, but I don't know if I understand what you mean about 'balanced trace width at the switch node' or 'random copper'.

[@garthhowe297]

Lots of good tips. With too many sharp corners, you get a squeal from the board when the electrons can't make the corners and they skid. Lol

[@KissAnalog]

Thank you! Yes, perfectly said;)

[@tristankordek]

👍🙂

[@KissAnalog]

Thank you!

[@AbdulazizElgharieb]

Thanks so much for effort i have a question can this rectifier connceted to inverter to control ac motor

[@timothygrupp]

so you don't think the summer intern that did the PCB design got a job offer at the completion of his internship.

[@KissAnalog]

Sad thing - they probably did get an offer - and now training the next intern. That is exactly how the 'ART' is being lost. No longer are there mentors that actually know something/anything - they simply cost too much for many companies. Sadly - I've heard that TI is one of those companies now - where the bean counters are fully in control... Just what I heard...

[@garthhowe297]

I was thinking along those lines as well.

[@timothygrupp]

@@KissAnalog and here I was thinking that it was the world I knew in the last century. You are most assuredly correct...sadly.

[@arifguler9855]

Thank you james hetfield

[@KissAnalog]

LOL - thank you!!