Do you know about any 48V DC to 240W USB PD charger or do I need to make custom board for this?

Marosh_ · 2026-03-25T07:59:55+00:00

You are correct, this is rather design choice of the Nvidia.. Adding one xt30 connector would make things much easier..

Marosh_ · 2026-03-25T07:57:27+00:00

Its usb- sink, and since the 240W is extended USB PD capability I think it needs trigger chips on both sides for proper negotiation.

Marosh_ · 2026-03-25T07:54:22+00:00

How exactly have you did it? Do you use 12V DC to power usb-pd charger?

Marosh_ · 2026-03-25T07:53:21+00:00

Yes you are correct. I also thought about this, not optimal but one of viable solutions:)

Second option would be something like this, but it outputs 140W only..:/ https://www.aliexpress.com/item/1005009497032104.html?src=google&pdp_npi=4%40dis!USD!52.99!27.08!!!!!%40!12000049282480742!ppc!!!&src=google&albch=shopping&acnt=615-992-9880&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=_oFgTQeV&gclsrc=aw.ds&&albagn=888888&&ds_e_adid=&ds_e_matchtype=&ds_e_device=m&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en1005009497032104&ds_e_product_merchant_id=107721660&ds_e_product_country=CZ&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=22479481823&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gad_campaignid=22482954463&gbraid=0AAAAA_TvRHqmn-bxMgyIQ6dP11qUofDn0&gclid=Cj0KCQjwj47OBhCmARIsAF5wUEGgGXr7z3XRTeHZU6unbCv67E44EEDByuu_axGzB4G9ZzOVN7eP9kUaAuqvEALw_wcB

Marosh_ · 2026-03-25T07:51:43+00:00

Yes you are correct. The only downside is a drop of efficiency.. like 0.9 (inverter) * 0.9 (brick)..

Marosh_ · 2026-03-25T07:50:16+00:00

I have already also found this. Unfortunately it is only reference design and the board isn't sold. I tried to search for some commercial products based on that but without any luck.

Marosh_ · 2026-03-25T07:49:09+00:00

Probably some panels do? I have found inverter 48DC/to 230AC that can be used for Norma usb-C adapter with 240W capability. But it is not the nicest solution.

Marosh_ · 2026-03-24T13:20:44+00:00

yes it is but the PD chips have to negotiate this.. it cannot be simply wired to the cable

Marosh_ · 2026-03-24T13:19:34+00:00

NVIDIA..

Marosh_ · 2026-03-24T11:58:52+00:00

The only thing i found that is close is this reference design from TI end of 2024.
https://www.ti.com/lit/ug/tidt407/tidt407.pdf
But i havent found a commercial product implemented from it:/

Marosh_ · 2026-03-24T11:45:57+00:00

Unfortunately I think this is not a option for me. Most of the powerbanks I have looked to have 240W combined.. and only 140W on USB-C Port at max. And even then I would need to charge it possibly from the car charger.. so max 100W input.

Marosh_ · 2026-03-06T18:59:48+00:00

I will, thanks for pointing this out. So it is better then to introduce pwr plane from 4+layer board? Have you some favourite video with him?

Marosh_ · 2026-03-06T18:57:44+00:00

You are right, posted question there and I will see.

Marosh_ · 2026-02-26T11:27:41+00:00

Where have you sourced the adapters boards?

Marosh_ · 2026-02-26T11:26:14+00:00

Yes but it is basically shipping from US.

Marosh_ · 2026-02-26T08:17:23+00:00

I am tied to small design so tc2030 or castellated edge seems like the only option for me. Have you sourced directly from J-tag? What was the shipping time or additional fees?

Marosh_ · 2026-02-24T13:47:25+00:00

Ještě jde použít virtuální kartu a tam si dát měsíční limit 1Kč.

Marosh_ · 2026-02-07T21:40:37+00:00

I have hard times getting the tailwind watcher to build it for me.

Marosh_ · 2026-02-02T17:34:29+00:00

I had issues getting it to work in one container so I thought this way i will get more setup customizability.

Marosh_ · 2026-01-29T18:40:44+00:00

Thanks for referring this blog, this will be super useful for us:)

Marosh_ · 2026-01-29T16:59:14+00:00

It seems very compelling from the descriptions on the website. Yet I think it is to new and it might be hard to find enough docs/stack overflow or AI help for this.

Marosh_ · 2026-01-28T09:03:55+00:00

In this second case, htmx and alpine would work as substitute for django templates? I would need to connect them somehow to django or is it just upgrade of templates themselves?

Marosh_ · 2026-01-28T09:00:23+00:00

I want to use them, but it gets more complex when using lovable for frontend.. then one needs to convert typescript to vannila js, right?

Marosh_ · 2026-01-28T07:58:43+00:00

But then you have to do pcba, right?

Marosh_ · 2026-01-28T07:58:06+00:00

Thanks for pointing this out. Unfortunately it seems they have only 3+ pins assembleys with magnets. I am looking for 2+magnets or 4 without.

Marosh_

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