Power Supply HDPlex AC-DC and DC-DC combo

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On VPX and VME SBC's, the wedge locks can conduct around 25W of power from the card to the chassis. The entire face of this PSU is significantly larger than those wedge locks...so I would expect the amount of power dissipation via conduction, would be substantially higher. Granted the chassis dissipation would be unknown to them, but a mod to go full conduction cooling would be entirely possible.

 

[Kmpkt]

Yeah. I mentioned use of a heat/thermal pad but he said (and I think this is fair) he doesn't think the average user can be expected to use a thermal pad. It's kinda like the problem with stupid people and condoms, amirite?

Anyhow, if people don't use a pad and these things overhead and go bust, he has one hell of a warranty issue on his hands. That being said, knowing that this thing can do 300 passively inside his H5 (one surface of contact), I wonder if we could safely push over 300W from the unit with the use of thermal pads and active cooling. Anyone able to comment intelligently on that possibility?

 

[ChainedHope]

Yeah. I mentioned use of a heat/thermal pad but he said (and I think this is fair) he doesn't think the average user can be expected to use a thermal pad. It's kinda like the problem with stupid people and condoms, amirite?

Anyhow, if people don't use a pad and these things overhead and go bust, he has one hell of a warranty issue on his hands. That being said, knowing that this thing can do 300 passively inside his H5 (one surface of contact), I wonder if we could safely push over 300W from the unit with the use of thermal pads and active cooling. Anyone able to comment intelligently on that possibility?

I dont know what components are being used but you could probably safely get it to 350 with little modification. Just based on passively cooling at 300w, as long as the components can handle the power going through them without dying and you can dissipate the extra wattage with what ever thermal pads / heatsinks you are going to be using. May have to break out a 40/20 mm fan and mod the casing a bit.

(Not gonna lie, I just thought about a custom water-blocked version and running it from a bench to see what the max load was before death/fire lol...)

 

[jeshikat]

(Not gonna lie, I just thought about a custom water-blocked version and running it from a bench to see what the max load was before death/fire lol...)

That's the first thing I thought of too: "huh, now here's a instance where it'd actually make sense to water cool a PSU"

 

[Kmpkt]

Oh shit waterblock. Might get you killed, but I'd love to see it.

 

[jeshikat]

Oooooooh, you could have a dual-sided block, then sandwich the AC-DC and DC-ATX on either side.

Completely impractical, but it'd be awesome to behold!

 

[ChainedHope]

Oh shit waterblock. Might get you killed, but I'd love to see it.

Nah waterblocks and watercooling has advanced enough that watercooling a PSU is plausible (theres an atx unit that was watercooled last year at either CES or Computex). You could probably get away with one of those 2x40mm rads as well lmao the ones used for RC cars.

Could make a tinnyyy loop with a DC-LT inline pump lol... I really want to do this now... Just dont have the resources to get a block made.

 

[Kmpkt]

If you design it, I'll mill it. Just has to be under 8" x 8" x 3".

Seriously though you could have a 2 sided water block and sandwich it between the two units. DC/DC on top would give you easy access to modularity and AC/DC below would work perfectly IMO.

 

[ChainedHope]

If you design it, I'll mill it. Just has to be under 8" x 8" x 3".

Lmao if someone can get a detailed model of it, I will get a design made up.

 

[Kmpkt]

https://smallformfactor.net/forum/resources/hdplex-internal-300w-ac-dc-adapter.71/


Also this:

 

[jeshikat]

That's a very primitive model, so I would not rely on it for modeling a waterblock.

Larry said I'd be getting a review unit in February, though I'm not 100% if it's the DC-ATX, AC-DC, or both. But as soon as I get my hands on one I'll be taking my calipers to it.

 

[ChainedHope]

That's a very primitive model, so I would not rely on it for modeling a waterblock.

Larry said I'd be getting a review unit in February, though I'm not 100% if it's the DC-ATX, AC-DC, or both. But as soon as I get my hands on one I'll be taking my calipers to it.

I shall wait for it then, if you could take heat measurements at full load as well that would help (something like a heat scan from each side would be very helpful in designing a block, but simple probe or laser measurements will do as well for the main hotspots). Just like to know how much heat we are dealing with.

It wont take me more than about an hour to make a prototype design that should work relatively well. Someone remind me when the model gets updated and the review goes up as I might not see the notifications.

 

[jeshikat]

Ok, I set a reminder.

 

[aquelito]

Oooooooh, you could have a dual-sided block, then sandwich the AC-DC and DC-ATX on either side.

Completely impractical, but it'd be awesome to behold!

Ahah I drew the exact same thing for my next build, based on two of these 300W adapters :

- either both units are placed placed horizontally, sitting on a Koolance HDD water block :

- either placed vertically with that kind of cheap waterblock sandwiched between both :

My case is an 1.3U server chassis, being 62 mm high. That's why 56mm was the perfect height as they could fit vertically next to each other, making a mere 156 x 80 mm 600W passive unit.

Too bad they come too late. Going to go with a SFX 63.5 mm high PSU instead.

 

[Lone]

The cross-section of the extruded section shows 41mm. That seems to be ignoring the top plate that has the vents though, so to be safe I made the overall height in the placeholder 43.5mm.

41 mm is accurate according to HDPLEX.

HDPLEX updated the mounting dimensions on the AC300W to be the same as the AC160W. Yay!

 

[jeshikat]

Update here: https://smallformfactor.net/news/hdplex-ces-update

300W DC-ATX out now: $85

160W DC-ATX direct-plug in a few weeks, price unknown

300W AC-DC in April to May timeframe, should be $65-$75

 

[Kmpkt]

Love the plug layout on the new unit. So. Much. Better.

 

[CubanLegend]

Update here: https://smallformfactor.net/news/hdplex-ces-update

300W DC-ATX out now: $85

160W DC-ATX direct-plug in a few weeks, price unknown

300W AC-DC in April to May timeframe, should be $65-$75

I preordered that New 300W DC-ATX, can't wait for it and for my S4 Mini!

That 300W AC-DC in April/May sounds awesome! I just got my Dell 330W in the mail today and HOLY CRAP i didnt expect it to be THAT HUGE and THAT HEAVY. I'd gladly swap it out for this 300W AC-DC and try to go for a brickless S4mini build. The release being down the line will help me wait for the rest of my parts and the S4-mini, get it all installed and figure out where I could fit that thing, if I'm even able to...

 

[Phuncz]

I'll be snap-buying one of the 300W AC-DCs, going to try this in an LZ7 and Chopin.

 

[Ceros_X]

Sold an Amazon gift card to fund the new HDPLEX 300W. Now, what brick to get?