Automotive EMI filter for power rails

[Sideshow Bob]

Do any have any design resources(white paper, appnote, etc) for recommended automotive EMI power rail input filtering? Can not find much about it. I was thinking something in the way of Phi filter maybe in combination with a common mode choke. It will be a quite low power unit. Not something like a power amp

[Manuel]

Just for corollary info:

www analog com/en/analog-dialogue/articles/ speed-up-the-design-of-emi-filters-for-switch-mode-power-supplies. html

take care,

X!

[bobcat1]

Hi

Search TI reference design archive - the have many design for automobile with filter and protection circuit = you will probably find there what you are looking for

All the best

Bobi   

[sadman]

check out wurth elektronik also look a book from wurth Trilogy of Magnetics

https://www.youtube.com/watch?v=EpFOGG49QvU

https://www.youtube.com/watch?v=laq5TOm7R3w

https://www.youtube.com/watch?v=Eexk3ly4bCo

https://www.youtube.com/watch?v=johYQItOrtM

sadman

[Sideshow Bob]

Thank you for all the help people. I think I have come step further. And will probably waste a lot time on Youtube the common days. I found a reference design here. https://www.ti.com/tool/PMP9397
I think I will use something like that. Since I do not need so much current, I will probably bump the inductor values up with  inductors  from the same family

[Signal]

If your device requires not 12 but 5V and consumes 50-200 mA then automotive linear regulator without any "chokes" is enough. LM2931 LM2936 LM9036 MIC2954. I am late, but maybe it will be useful

[Nuclear__]

If it’s not for professional use , but you only want one piece to do your work,(like my case)I would suggest to buy from Ali a filter (including common mode chokes) for this purpose.you can find up to 20 amps capacity in good price. I’m still waiting it so not tested yet , but looks promising