TAS5630 D-Class build - diyAudio
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Old 20th July 2009, 07:31 AM   #1
berni8k is offline berni8k  Slovenia
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Default TAS5630 D-Class build

I have decided to try and make a homemade D-Class amp useing the new TAS5630 chip from Texas Instruments.

The specs on it are amazing like total output power 600W, low THD (0,03%) single supply 20-50V operation, differential analog inputs.... and on top of it all its almost as simple to use as a AB class chip amp.

So all this made me decide to try and build one of them.

Right now i have a PCB made in eagle for the HSSOP version of the chip( The TQFP version i wanted is not in production yet) and i just recently got the chips them selfs .As you can see i am using the BTL mode of it that has a max of 300W but the high power is mealy to provide headroom and keep the amp cold.

On the PCB the 4 holes you see are not for the purpose of mounting the PCB but they are 775 CPU socket push pin heatsink mountings. I just toght why not simply use a CPU heatsink to cool this. As for the white you see around the board thats the solder mask stop layer so i can cover those in solder to provide a better connection in the high current paths.
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Old 20th July 2009, 05:02 PM   #2
mp8 is offline mp8  United States
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It is really cool to see a home project with this amp. I work for TI and am starting to do a custom design with this device. Please keep us updated with your progress.
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Old 20th July 2009, 06:23 PM   #3
berni8k is offline berni8k  Slovenia
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Will do that, i hope i get it to work on a homemade single layer board.

Oh and mp8 since you work for TI could you meaby tell me how to get to the PurePath Studio software for programing the TAS3208 DSPs ?
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Old 20th July 2009, 06:54 PM   #4
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Like your PC heatsink idea... Just need to make sure all the
topside stuff is shorter than the thermal interface top of the
chip... Means flush cutting some rather large thruhole parts
too, from the look of it. Sometimes that makes for mechanical
weakness... You might want to build up big fillets the other
side. Agh, but you just said single layer???

I am looking forward to seeing this as an EVM. Or maybe
already did, but it looked different in some way??? All I can
remember: Some early boards were built without a device.
I never got to see the heatsink that would have gone with.
Would have wanted to play with that one for sure!

I got to burn the purepath CDs that shipped with the 3108,
I'm not sure Purepath for 3208 was/is exactly the same CD
or not??? You best get that update from an official source.
I don't wanna endrun around my bread and butter.

I'll mention it to the relevant engineer next time I see him.
But I'm down the street, and that might not happen quick.
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Old 20th July 2009, 06:58 PM   #5
berni8k is offline berni8k  Slovenia
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The entire TAS3xxx family of DSPs is supposed to be sported by the PurePath Studio software.

I would be thankful if i could get download of it.As i have the DSPs and i cant do anything with them as i cant program them.
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Old 20th July 2009, 07:26 PM   #6
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Default Nice Work!

Hello,

I like your Board. Please keep us informed. The TAS5630 is a VERY interesting chip. I am currently starting the same Projekt as you did (2xBTL, DKD-Package, Eagle-Layout).

When will it be build and tested?

Cheers,
Christoph
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Old 20th July 2009, 07:33 PM   #7
berni8k is offline berni8k  Slovenia
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Thats good to hear i would also like to hear about your progress. For my board i looked at the PCB in the datasheet for the TQFP version and made something close to that.

Right now i have to etch this board, i hope it comes out alright despite the printer problems. With luck it should be assembled tomorrow. I hope it will actually work.
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Old 20th July 2009, 07:40 PM   #8
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I pull up my build (last CD we shipped for 3108), and your
chip (3208) does seem to be listed prominently in the GDE.
I'm not sure thats relevant to what CD ships with a 3208?

That software isn't mine to give out. Again, I don't work
directly inside TI, nor have any such authority. The other
guy who actually does work at TI might be able to point
the way to more direct help?

I just do whatever TI contracts us to do, I'm not part of
the decision making process.. I'm just bench tech at the
end of a line that sometimes gets to assemble the EVMs.

Best I can do is mention it to the engineer if I happen to
see him. But that could be a while. Not here very often.
I'll ask my supervisor for permission to call him directly.
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Old 20th July 2009, 08:03 PM   #9
berni8k is offline berni8k  Slovenia
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Thanks for the help, would be great if i can get my hands on the software.

Well the software is supposed to be free but Texas doesn't have a download link on there website.

I don't see whats the point with TI making there software so hard to get.
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Old 20th July 2009, 11:16 PM   #10
luka is offline luka  Slovenia
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Looks good, great job so far, hope to see more of it

How much were chips? Orderd as samples?
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