Prototype KMPKT Dynamo DC-12V

[LjSpike]

It's not the Dynamo that would need active cooling, it's the AC-DC portion of the equation. I've talked to Larry about going bigger with the AC-DC, but 300W is the largest supply he feels he can make in a passive enclosure. The holy grail for this sort of application would be to integrate GaN into the equation which would increase efficiency from 90 to 94%, substantially reducing heat produced. Unfortunately this appears to be quite far off on the horizon for the time being. As far as heatsinking the Dynamo, my heatsink is already 2-3 times the size of what is required, so going with a higher dissipation heatsink is moot.

Ahh, ok. I could be very naive in my next suggestion but...
I was doing a bit of reading and got reminded of a case I saw, with an unusual form of cooling, which might be an option.
Liquid Submersion Cooling with mineral oil. If the AC-DC portion had it's hottest points (or the entire unit) within a mineral oil tank to provide complete contact, the mineral oil could then improve the efficiency of the heatsink due to the hugely increased contact area and that it is essentially liquid cooling taken to the extreme.

 

[Kmpkt]

Would be fun to have the ability to add a water block on top to improve cooling. Don't know how viable that would be for production though.

 

[LjSpike]

Would be fun to have the ability to add a water block on top to improve cooling. Don't know how viable that would be for production though.

Well, any sort of liquid might be able to improve it. Critically mineral oil might beat water as it can literally just run over the circuitry and wires of the unit. Perhaps the only other ideas I would be able to come up with would be some really really unusual heatsink designs or Freon cooling... The main problem with mineral oil is it'd undoubtedly need a pump (even if it's a weak one) or some similar mechanism to aid it's movement as it is a bit more viscous then normal water. Freon cooling has the problem that it might cool the AC-DC so much that condensation forms, which isn't gonna be good news for the circuitry.

The other options would be going and looking at how physics laboratories are cooling their equipment with things like magnetic cooling and laser cooling, however I feel those might be to complex and/or cost prohibitive to use.

EDIT: A Thought regarding the mineral oil - The other benefit is that as your just submerging it, the components can still have classic heatsinks to transfer more heat to the mineral oil. It'd essentially be similar to an air setup, except that it'd transfer heat far quicker to the oil then to air (but you obviously then have to emit it from the oil to the air, probably via a second heatsink).

 

[Kmpkt]

Hypotheticals are fun and all, but I'm on a pretty tight budget for this product

 

[zovc]

???

My bad, I thought you were thinking that Kmpkt's units were AC-DC. You were talking about the HDPLEX.

 

[LjSpike]

Hypotheticals are fun and all, but I'm on a pretty tight budget for this product

A shame, well, perhaps some time in the future if the Dynamo is successful.

 

[TinyAudio]

Do you have a CAD resource we can play with?

I know it isn't finalised but something to use with the mounting points connector positions would be super handy.

 

[Kmpkt]

It's coming!

 

[zovc]

Wow, those pictures look great! It looks way cooler as a real thing.

Is the heatsink's plate with the octagon pattern removable for mounting/unmounting? I might have to pick one up and see if I like this or the HDPLEX 300W DC-ATX more.

 

[DocH]

Pardon my ignorance. Little new and still trying to chew through this whole thread. So you pair this with an HD Plex 160w that plugs directly into the Mobo as a 24 pin and chains into this with an 4/8 pin? Then you plug into the gpu through this module.

The last thing I am confused about is the Dell power block only supplies 330w I thought so how would you get to 460 watts? I will be doing a S4 build and definitely could use more wattage than 300w so I am looking at this if it is the case.

 

[zovc]

The last thing I am confused about is the Dell power block only supplies 330w I thought so how would you get to 460 watts?

The dell brick is rated to supply 330W. Most devices that have a wattage rating are given conservative "recommended" numbers that generally can be exceeded for brief periods. I am not super familiar with the Dell brick in particular, but for it to be as popular as it is, I assume it can handle spikes over 330W pretty well.

 

[Kmpkt]

Pardon my ignorance. Little new and still trying to chew through this whole thread. So you pair this with an HD Plex 160w that plugs directly into the Mobo as a 24 pin and chains into this with an 4/8 pin? Then you plug into the gpu through this module.

The last thing I am confused about is the Dell power block only supplies 330w I thought so how would you get to 460 watts? I will be doing a S4 build and definitely could use more wattage than 300w so I am looking at this if it is the case.

To answer your first question, yes that is exactly how this unit works. The board has a 19V through flow that will let you hook it up to the HD Plex 160W via 6 pin or any other 19V based unit (Mini STX, Micro STX, Thin ITX, NUC, Brix, etc.). I am also releasing my own version of the 160W I'm calling the Dynamo Mini with a matching heatsink for those that care about aesthetics.

To answer your second question, yes the largest readily available PSU on the market is the Dell which peaks at 330W max. My solution to this problem will be a third product I am calling the KMPKT Merge. The Merge will be a much beefier version of this load sharing device you can find on Mini Box.

What the Merge will do is allow you to put two compatible AC-DC power supplies together to form a single power supply. If you want to run the Dynamo and Dynamo mini at spec, you can simply use the Merge on one HD Plex 160W AC-DC combined with one HD Plex 300W AC-DC. If you want to push the limits a bit (at your own peril), you can pair two HD Plex 300W AC-DC units. Along the same lines, if you want to keep your enclosure small, you can use the Merge to add together a pair of Dell 330W bricks for an absolutely beastly 660W of power. Additionally you can use a 160W AC-DC with the Dynamo Mini and a 300W with the Dynamo as they can sync power on/of through a special header which eliminates the need for the Merge altogether (basically they act as two discrete systems coordinating through a special set of headers.

 

[jeshikat]

So there isn't a heatsink on the backside?

 

[aquelito]

How long before you start the Dyname sales thread ?
Could use one just now

Also wouldn't mind the 3D CAD file

 

[Kmpkt]

So there isn't a heatsink on the backside?

There's supposed to be. I need to ask Larry what's up with that.

How long before you start the Dyname sales thread ?
Could use one just now

Also wouldn't mind the 3D CAD file

I am planning to pay up the order in mid-May provided everything on the prototype is to my liking. Depending on the turn around time on manufacturing, I'm hoping to have the unit for sale within a month to month and a half. I will see about getting the 3D CAD file as I know there were changes after I submitted the last version done by @Aibohphobia

Also one more tidbit of information. The Dynamo will now handle 360W continuous which means significantly overclocked high-end GPUs shouldn't be an issue. Total system max wattage is 520W continuous.

 

[DocH]

To answer your first question, yes that is exactly how this unit works. The board has a 19V through flow that will let you hook it up to the HD Plex 160W via 6 pin or any other 19V based unit (Mini STX, Micro STX, Thin ITX, NUC, Brix, etc.). I am also releasing my own version of the 160W I'm calling the Dynamo Mini with a matching heatsink for those that care about aesthetics.

To answer your second question, yes the largest readily available PSU on the market is the Dell which peaks at 330W max. My solution to this problem will be a third product I am calling the KMPKT Merge. The Merge will be a much beefier version of this load sharing device you can find on Mini Box.

What the Merge will do is allow you to put two compatible AC-DC power supplies together to form a single power supply. If you want to run the Dynamo and Dynamo mini at spec, you can simply use the Merge on one HD Plex 160W AC-DC combined with one HD Plex 300W AC-DC. If you want to push the limits a bit (at your own peril), you can pair two HD Plex 300W AC-DC units. Along the same lines, if you want to keep your enclosure small, you can use the Merge to add together a pair of Dell 330W bricks for an absolutely beastly 660W of power. Additionally you can use a 160W AC-DC with the Dynamo Mini and a 300W with the Dynamo as they can sync power on/of through a special header which eliminates the need for the Merge altogether (basically they act as two discrete systems coordinating through a special set of headers.

You had me at hello!! Really excited for this sounds like I may be buying all three of your products. Would love to see your build your doing and demo'd too!.

 

[Kmpkt]

I'll be using my first prototype of the Dynamo in an S4 build I've been planning, so hopefully I'll have something for you to see in the next couple of weeks. I just have the side panels to get painted before I get the power units (which are en-route from Hong Kong as we speak).

 

[LjSpike]

The Dynamo will now handle 360W continuous which means significantly overclocked high-end GPUs shouldn't be an issue. Total system max wattage is 520W continuous.

Oh cool! We still need to pair it with the HD-Plex or Dynamo Mini though right?

 

[Kmpkt]

To get 520W total continuous power yes.

 

[DocH]

Kmpkt are you going to roll out all three products at once? I know you said hopefully may but I wasn't sure if it was just for one of them or all of them.