Buck Converter with USB-C output

[gumby4231]

TL;DR Summary

I'm seeing what options are available to power my single board computer.

I have a https://www.lattepanda.com/products/lattepanda-delta-432-with-win10-pro-activated.html single-board computer. For my project, I'd like to power it from a 12V tractor battery if I can. I also have the option of powering it via the JST ph2.0 4P 12V DC connector. I discuss this option with some from the Lattepanda forum here. I'd however like to explore all of my options. Thus I have been looking into the USB-C option. The problem is there doesn't seem to be many regulators with USB-C connectivity that meet it's power requirements (15V 3A).

Testing has shown that the board consumes much less power than this, these are simply the supply Lattepanda officially recommends.

I have found https://www.renesas.com/us/en/products/power-management/battery-management/multiple-cell-battery-chargers/device/ISL95338.html#documents, but it's industrial with a high minimum order quantity(250). It's got a lot of documentation there and the technical language is pretty dense for me as a beginner, so its quite possible I missed some stuff.
I was also considering using a Buck converter with USB output, and then use a USB A to USB-C adapter. This is the best combination I could find (Buck Converter & Adapter). As you'll see, they don't seem to meet my power demands. The buck converter will do 30W at 5V, while the adapter is only capable 2.4A @ 5V.

Does anyone have any recommendations?

 

[Baluncore]

You are overthinking this.
Keep it simple. Power it through the dedicated 12V power port.

Use a fuse and two idiot diodes to protect the board.
One diode to ground, will blow the fuse if the battery is reverse connected.
The other diode in series to protect the board while the fuse blows.

If you need it, for less than $10;
https://www.ebay.com.au/itm/XL6019-...m212fc85be5:g:CeMAAOSwLTNZ3e~1&frcectupt=true

 

[berkeman]

Summary:: I'm seeing what options are available to power my single board computer.

I have a https://www.lattepanda.com/products/lattepanda-delta-432-with-win10-pro-activated.html single-board computer. For my project, I'd like to power it from a 12V tractor battery if I can. I also have the option of powering it via the JST ph2.0 4P 12V DC connector. I discuss this option with some from the Lattepanda forum here. I'd however like to explore all of my options. Thus I have been looking into the USB-C option. The problem is there doesn't seem to be many regulators with USB-C connectivity that meet it's power requirements (15V 3A).

Testing has shown that the board consumes much less power than this, these are simply the supply Lattepanda officially recommends.

I have found https://www.renesas.com/us/en/products/power-management/battery-management/multiple-cell-battery-chargers/device/ISL95338.html#documents, but it's industrial with a high minimum order quantity(250). It's got a lot of documentation there and the technical language is pretty dense for me as a beginner, so its quite possible I missed some stuff.
I was also considering using a Buck converter with USB output, and then use a USB A to USB-C adapter. This is the best combination I could find (Buck Converter & Adapter). As you'll see, they don't seem to meet my power demands. The buck converter will do 30W at 5V, while the adapter is only capable 2.4A @ 5V.

Does anyone have any recommendations?

Sorry, I'm no USB expert, but your post is confusing to me.

AFAIK, "USB-C" specifies the connector mechanicals and the data speed, but does not necessarily specify high current capability (I could be wrong about that).

https://www.pcmag.com/how-to/what-is-usb-c-an-explainer

USB 2.0 versus USB 3.0 may specify different current levels (I'm also not sure about that), but I don't think any USB specification will supply the power levels that it sounds like you are wanting at 45 Watts.

Oops, I see that @Baluncore is faster than I am -- I was about to suggest the same thing about using the 12V directly, but maybe with a little noise filtering in addition to the protection recommendations that he posted.