TPA3251d2 - Page 2

Nisbeth · 16th July 2015, 07:10 PM

PCB layout description in the data sheet seems quite detailed - who's got a spare weekend to put something together?

/U.

gmarsh · 16th July 2015, 07:55 PM

That's a pretty awesome looking chip.

Yes, I'll make an amplifier card for it

29285 · 16th July 2015, 08:02 PM

Quote:

Originally Posted by Buehgemeiste

If i were an engineer...

...and you were a lady

Buehgemeiste · 16th July 2015, 10:53 PM

Quote:

Originally Posted by gmarsh

That's a pretty awesome looking chip.

Yes, I'll make an amplifier card for it

you are the man!!!!

doctormord · 17th July 2015, 10:49 AM

Quote:

Originally Posted by gmarsh

That's a pretty awesome looking chip.

Yes, I'll make an amplifier card for it

Please let me know what heatsink solution you choose, I'm still unsure. BGA heatsinks are quite expensive.

doctormord · 17th July 2015, 12:42 PM

Nice, my samples just arrived from TI.

Hammett · 17th July 2015, 01:00 PM

Quote:

Originally Posted by gmarsh

That's a pretty awesome looking chip.

Yes, I'll make an amplifier card for it

Excellent news!

Lo_Tse · 18th July 2015, 12:02 AM

Quote:

Originally Posted by gmarsh

That's a pretty awesome looking chip.

Yes, I'll make an amplifier card for it

Awesome!! May be a completely built amp card

. This is something that I could really use. The 3116's output is a bit low for my 83 db speaker.

Regards,

gmarsh · 18th July 2015, 01:37 PM

Quote:

Originally Posted by doctormord

Please let me know what heatsink solution you choose, I'm still unsure. BGA heatsinks are quite expensive.

Haven't made my mind up yet.

Heatsinks are a mechanical pain in the ***. I might do something like mount the card to an aluminum plate with the TPA on the bottom side - I'd have to "swiss cheese" the plate a bit to allow clearance for component leads, I'll play around with the idea over the next few days.

doctormord · 18th July 2015, 05:13 PM

Okay. I think i'll go for a "Fischer Elektronik" SK612 37.5 with off-centered mounting drills (Heatsink performance is about 3.4K/W then) and split decoupling (1u 1206/1210 + 100n 0612 reversed).

With the infos from here:

http://www.xilinx.com/support/docume...es/xapp623.pdf

The placement of the 1u isn't that critical.

16th July 2015, 07:10 PM	#11
Nisbeth diyAudio Member Join Date: Jan 2001 Location: Denmark	PCB layout description in the data sheet seems quite detailed - who's got a spare weekend to put something together? /U. __________________ DIY projects blog

17th July 2015, 12:42 PM	#16
doctormord diyAudio Member Join Date: Oct 2007	Nice, my samples just arrived from TI. __________________ 360customs.de Projects: MAX9709 TPA3132D2 TPA351/TPA3255 - SigmaDSP - CSR8645 - BQ24450 LTC3784 1200W Polyphase Boost - LM5069 Hotswap Controller

18th July 2015, 05:13 PM	#20
doctormord diyAudio Member Join Date: Oct 2007	Okay. I think i'll go for a "Fischer Elektronik" SK612 37.5 with off-centered mounting drills (Heatsink performance is about 3.4K/W then) and split decoupling (1u 1206/1210 + 100n 0612 reversed). With the infos from here: http://www.xilinx.com/support/docume...es/xapp623.pdf The placement of the 1u isn't that critical. __________________ 360customs.de Projects: MAX9709 TPA3132D2 TPA351/TPA3255 - SigmaDSP - CSR8645 - BQ24450 LTC3784 1200W Polyphase Boost - LM5069 Hotswap Controller

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16th July 2015, 07:55 PM	#12
gmarsh diyAudio Member Join Date: Apr 2004 Location: Halifax, NS	That's a pretty awesome looking chip. Yes, I'll make an amplifier card for it