Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method? - Raspberry Pi

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Wed, 14 Aug 2024 21:44:35 +0000

For Those interested.

I'm getting the parts...in

Here is the PD board with 2X2 (100mill-centers) header, attached is the mate with a Mini-molex connector that will connect with the power distribution board. The cable will definitely be longer than the one shown, this one will be used for testing purposes.

Best,

Frank

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RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Wed, 31 Jul 2024 19:52:00 +0000

As far as the title on this issue.. One can use a (DC-DC) converter to bring the power down to what the 52PI PD adapter requires for input: SKU: EP-0225 (9-24 VDC). A PD signal is required for the RP5, the 52PI adapter board does this with ease.

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Wed, 31 Jul 2024 19:41:11 +0000

I'm adding a diagram of the power connections (didn't somebody asked for a diagram?). Yes, strain relief and 2X Ground and Power wires will be used, but not diagrammed :)

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RP8, will not be used, just wanted to keep it in the diagram. I haven't used Visio for some time...

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Thu, 25 Jul 2024 22:15:05 +0000

@zander

Great to hear!!!

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Ron — Thu, 25 Jul 2024 21:29:15 +0000

@fvasquez1776 I just checked, and my config is already set to gen3. It may have happened automatically when I installed the high performance drive.

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Thu, 25 Jul 2024 20:34:56 +0000

@zander

In the end I'll be using all 4 connections (2 ground, 2 Vin). the wire is 24-26 ga, should do well for 12V, 4.2A. It's good, the small power jack often uses 28 ga. wire. two 24-26 ga wire is far better than 1 28 ga wire.

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Thu, 25 Jul 2024 19:48:54 +0000

In the end I'll be using all 4 connections (2 ground, 2 Vin). the wire is 24-26 ga, should do well for 5V,5A.

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Ron — Thu, 25 Jul 2024 19:46:45 +0000

@fvasquez1776 Cool, I will fire up my Pi5 and add that right away. Thanks.

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Ron — Thu, 25 Jul 2024 19:45:49 +0000

@fvasquez1776 I don't like the look of the VIN wires, seem small, and need strain relief. Can't you use the jack?

RE: Raspberry Pi 5, DC-DC Buck down power supply from 36v, best method?

Fvasquez1776 — Thu, 25 Jul 2024 19:22:42 +0000

@zander

Here's the instructions...(credit goes to Pimironi)

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It's the

dtparam=pciex1_gen=3

Command, near the end, inserted into the config file...

Best,

Frank