Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

TPA3255 - all about DIY, Discussion, Design etc.
TPA3255 - all about DIY, Discussion, Design etc.
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 15th July 2016, 04:54 PM   #21
doctormord is offline doctormord  Germany
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
I'm sorry, i can't offer anything at chinese prices.
  Reply With Quote
Old 15th July 2016, 05:18 PM   #22
jencelo is offline jencelo  United States
diyAudio Member
 
Join Date: May 2009
Quote:
Originally Posted by doctormord View Post
I'm sorry, i can't offer anything at chinese prices.
It was a joke (jk) What do you plan to charge?
  Reply With Quote
Old 18th August 2016, 01:50 PM   #23
impuls60 is offline impuls60  Norway
diyAudio Member
 
Join Date: Apr 2011
How is the availability on these chips now? Is anyone planning to sell any amps with this chip soon? I think its time to bring this technology up from the little league
I love the tpa3116 (and the 5630) cards but I need a lot more clean power for party events. I think finally the tpa3255 is the chip that is going to give us an amplifier that does it all!
  Reply With Quote
Old 18th August 2016, 02:07 PM   #24
doctormord is offline doctormord  Germany
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
I will have one 3255 board tested for thermal performance in the next two weeks. Thermal coupling is still a bit unclear. Beside that, the 3255 is better used with 8R+ speakers, as output FETs RDSon is (way) higher than 3251.
  Reply With Quote
Old 18th August 2016, 07:51 PM   #25
impuls60 is offline impuls60  Norway
diyAudio Member
 
Join Date: Apr 2011
That is good news! I would like to buy 2 boards of you I always make my own cooling solutions so the chips in my setups are always way colder than the usuall setups.. What problems do you foresee with 6 - 4ohms speakers?
  Reply With Quote
Old 18th August 2016, 08:59 PM   #26
doctormord is offline doctormord  Germany
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
For 4-6R Speakers, you normally won't need that high voltage. Losses are higher at the 3255 due to higher RDSon and supply voltage.

For the cooling, you'll have to get heat away from the chip by ~5x2mm thermal coupling. At 600W that more than 60W.
  Reply With Quote
Old 20th August 2016, 11:05 PM   #27
impuls60 is offline impuls60  Norway
diyAudio Member
 
Join Date: Apr 2011
That cooling scenario could actually be a challenge! I think you mentioned crest factor earlier and I certainly isn't going to use it at max that much so I don't think real world scenario is going to be that extreme. Have you looked into Corsair's maglev fans coming to the pc market? Very exciting technology and very quiet! I am planning to put 2 of these amps into a monster of a audio amplifer case so size isn't that important to me. Since this chip has the power to outshine a full size expensive power amplifier I think the tpa chips will stop beeing looked upon as a novelty amplifier.
  Reply With Quote
Old 4th October 2016, 08:33 AM   #28
impuls60 is offline impuls60  Norway
diyAudio Member
 
Join Date: Apr 2011
Any progress on your 3255 amp Doctormord?
  Reply With Quote
Old 4th October 2016, 01:16 PM   #29
doctormord is offline doctormord  Germany
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
Schematics are there, layout is to be discussed. (The actual layouts are under lab test and needs to be discussed, there's room for improvements)

I'm actually quite busy with my study, but winter is coming.
  Reply With Quote
Old 8th October 2016, 02:13 AM   #30
frammis is offline frammis  United States
diyAudio Member
 
Join Date: Jan 2008
TPA3255 datasheet was updated today on TI Website.

http://www.ti.com/lit/ds/symlink/tpa3255.pdf
  Reply With Quote

Reply


TPA3255 - all about DIY, Discussion, Design etc.Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Inexpensive HDMI 2 channel receiver design discussion brw02005 Construction Tips 1 6th March 2016 07:27 PM
A Discussion on Design Philosophy - OB vs Multiway vs NOB miragem3i Multi-Way 2 10th July 2014 03:02 AM
Discussion: push pull design and minimal distortion does it matter ? hoppaz Subwoofers 19 15th November 2012 08:34 PM
Car subwoofer (2x8" fancy design discussion) VEC7OR Subwoofers 11 29th May 2004 09:12 PM


New To Site? Need Help?

All times are GMT. The time now is 06:43 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki