post your business end PCB layouts! - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 20th July 2006, 08:11 PM   #1
diyAudio Member
 
Join Date: Oct 2003
Location: Helsinki
Default post your business end PCB layouts!

Hey,

how about sharing your PCB layouts (jpg, eagle, ...) for the business end of >100W >100kHz in this thread?

The schematics for "classic" class D amps (IR/UcD/SODFA clones etc) most here probably already know by heart, but not so the good PCB layouts :-)

I already tried the forum search and also googled 'pcb "class d" site:diyaudio.com', but regarding PCB layout pics the results were pretty much nil.

The best discrenible ones were, in the middle of
my 1st ever D-amp, WORKING!!!
and this
http://img220.imageshack.us/my.php?i...00x11259pl.jpg

And there are a few commercial reference boads with some PCB layout (sometimes in poor quality) shown in the docs. For example:
http://www.irf.com/technical-info/re.../iraudamp1.pdf
http://www.41hz.com/downloads/RB-TK2350.pdf
http://www.zetex.com/3.0/pdf/zxcd100moeval.pdf
http://www.zetex.com/3.0/pdf/zxcd1000.pdf
http://www.41hz.com/downloads/RB-TK2350.pdf

So, you have any good designed-it-yourself >100W >100kHz layout that you'd like to share with class D PCB layouting beginners? :-))

- Jan
  Reply With Quote
Old 21st July 2006, 02:36 PM   #2
diyAudio Member
 
Join Date: Dec 2001
Location: Eindhoven
Default Re: post your business end PCB layouts!

Quote:
Originally posted by jwagnerhki
Hey,

how about sharing your PCB layouts (jpg, eagle, ...) for the business end of >100W >100kHz in this thread?

The schematics for "classic" class D amps (IR/UcD/SODFA clones etc) most here probably already know by heart, but not so the good PCB layouts :-)

I already tried the forum search and also googled 'pcb "class d" site:diyaudio.com', but regarding PCB layout pics the results were pretty much nil.

The best discrenible ones were, in the middle of
my 1st ever D-amp, WORKING!!!
and this
http://img220.imageshack.us/my.php?i...00x11259pl.jpg

And there are a few commercial reference boads with some PCB layout (sometimes in poor quality) shown in the docs. For example:
http://www.irf.com/technical-info/re.../iraudamp1.pdf
http://www.41hz.com/downloads/RB-TK2350.pdf
http://www.zetex.com/3.0/pdf/zxcd100moeval.pdf
http://www.zetex.com/3.0/pdf/zxcd1000.pdf
http://www.41hz.com/downloads/RB-TK2350.pdf

So, you have any good designed-it-yourself >100W >100kHz layout that you'd like to share with class D PCB layouting beginners? :-))

- Jan

Hi,

Apart from the circuitry, which is an art at itself, laying out PCB's for class D is anything but easy and requires a lot of experience in many fields.

By the time you have gained that, you've spent much money and time. If that is no problem I can only encourage you, otherwise I'd advise to buy an off the shelf unit (I only know the UCD's soundwise - highly recommended) and upgrade / tune these to your own taste.

best
__________________
Guido Tent
www.Tentlabs.com
  Reply With Quote
Old 21st July 2006, 03:10 PM   #3
zlast is offline zlast  United States
diyAudio Member
 
Join Date: Sep 2004
Location: none
Send a message via AIM to zlast Send a message via MSN to zlast Send a message via Yahoo to zlast
Default Class D

http://www.national.com/pf/LM/LM4651.html
__________________
none
  Reply With Quote
Old 21st July 2006, 04:51 PM   #4
diyAudio Member
 
Join Date: Apr 2005
Location: In the Wild, Wild West
That chip from National and their FET output stage, the LM4652, are on lifetime buy so get them before they are gone. I don't see any date for last possible time to get and don't know how National handles such things but they won't be available forever.

-SL
  Reply With Quote
Old 21st July 2006, 08:20 PM   #5
diyAudio Member
 
Join Date: Oct 2003
Location: Helsinki
Yes off the shelf is usually the simplest or fastest way but it's hardly diyaudio ;-))

LM4651/2, good comment, there indeed is a nice PCB layout on page 19 of http://cache.national.com/ds/LM/LM4651.pdf

As is in a wealth of Tripath eval boards, EB-*.pdf in http://www.tripath.com/downloads/

On the DIY side zkaiser has a really nicely documented project which is more DIY than eval boards: Yet another version of IR audio amp ??
page two with "multilayer composite print.pdf" PCB layout attached:
http://www.diyaudio.com/forums/attac...amp=1134300042

Hopefully there are other well documented projects like zkaiser's that include the very relevant PCB layout :-))
Got one?

And has anyone made a generic 100..600W@4ohm class D testbed board with only the mosfet and filter section, to which you could then plug various experimental feedback or PCM controllers?
  Reply With Quote
Old 23rd July 2006, 01:42 PM   #6
diyAudio Member
 
Join Date: Oct 2003
Location: Helsinki
Nobody got a DIY board design? :-|

Well here goes my prototype v1.2, IR2110 + 2 x UCC37322 + 2 x IRFB31N20D, single-supply 50..90V, 2-layer PCB (would need 3-layer for dual supply, but 3-layers aren't DIY...). Not so thoroughly tested and scoped yet, there may be some flaws.
Attached Images
File Type: gif mosfethalfbridge_ucc37322_s.gif (31.2 KB, 446 views)
  Reply With Quote
Old 24th July 2006, 07:56 PM   #7
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
Default .... more possibles for 100 - 600 watt boards

No diagrams available, lots of pictures, but these have been around for several years and apparently work very well with significant high quality v. power output.

http://aussieamplifiers.com
  Reply With Quote

Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ELEKTOR - Schematics and PCB layouts dudaindc Elektor 4 6th January 2010 03:23 PM
Printable layouts.... jamesjmcgee Chip Amps 1 25th March 2009 07:00 PM
What you always wanted to know on layouts...and now....you do! Stefanoo Solid State 0 8th October 2008 06:32 PM
where do you get those schematics / layouts? monomonster Tubes / Valves 3 24th April 2006 10:37 AM
Since they're out of business punchpeanut Multi-Way 2 27th August 2003 01:49 PM


New To Site? Need Help?

All times are GMT. The time now is 01:52 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2