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

Updated schematic of my class D amp
Updated schematic of my class D amp
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 2nd February 2005, 03:51 PM   #1
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
Default Updated schematic of my class D amp

So, here it is, with all the components values.
Features are balanced input, dc, over and under voltage protections, constant delayed turn on/off delay with muting relay, controled by a 4mhz pic microcontroler. All on board supply and control.

I will post the gerbers for the pcb as well.
It sounds good, and works 100% perfect for now, powered with 37v rails.
Balanced input let me bridge two modules together without any additional components outside of the boards, wich i havent try yet. Power output wil be scary i guess.

cheers !!
Attached Files
File Type: pdf damp_.pdf (89.7 KB, 1180 views)
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 2nd February 2005, 05:16 PM   #2
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
And the gerber files...
Attached Files
File Type: zip damp1.zip (81.3 KB, 400 views)
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 2nd February 2005, 05:19 PM   #3
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
Second part of the gerbers...
Attached Files
File Type: zip damp2.zip (37.4 KB, 253 views)
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 2nd February 2005, 05:20 PM   #4
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
And 1:1 .PDF for copper top, bottom and top silk.
Attached Files
File Type: zip damp3.zip (92.4 KB, 405 views)
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 2nd February 2005, 08:27 PM   #5
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
...and .hex file for the pic.
Attached Files
File Type: zip audampctrl1.zip (436 Bytes, 303 views)
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 4th February 2005, 07:42 PM   #6
AAK is offline AAK  United States
diyAudio Member
 
Join Date: Jul 2004
Location: Florida
Hi Pat,

Excellent work! I'm new to class D but I must say you have inspired me to give a try. But instead of using a half bridge I'm thinking of using a full bridge. The addition of another gate driver, two mosfets, and some additional components doesn't seem to complicated, but I'm not sure if the integrator feedback circuitry would need to be modified for it to work? Possibly a feedback for the upper and lower mosfets. Any suggestions?

Thanks,

Al
  Reply With Quote
Old 4th February 2005, 07:54 PM   #7
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
yep, i have tough about that too. I am still fidling the pcb for eventual order from baree bone pcb's.

I think that if you only add the IR part from the hex inverter, but that you invert the signals, i think it may work. Only concern is the added bootstrap cap, it have to be charged before starting the oscillation...
Other than that, i dont think it is necessary to run another feedback path.
I will give it a try in a near future, maybe just a bare bread board test. It could be implemented into my pcb easely, maybe keeping the same size as well...ohhh my...bridged modules already...tons of power !!
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 4th February 2005, 08:38 PM   #8
AAK is offline AAK  United States
diyAudio Member
 
Join Date: Jul 2004
Location: Florida
Thanks for the quick reply. Keep us all posted on your full bridge, and thanks for sharing your work. I'll keep you posted on how things are go on my end. BTW last year in March i spent a few days in Quebec City. I had a great time, a little cold for me being from Florida but I'd go back in a heart beat. Maybe in the summer this time.

Al
  Reply With Quote
Old 4th February 2005, 08:43 PM   #9
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
good, thanks for the good comments.
__________________
Electronic engineer for automotive market.
  Reply With Quote
Old 19th March 2006, 11:01 PM   #10
pat allen is offline pat allen  Canada
diyAudio Member
 
pat allen's Avatar
 
Join Date: Dec 2004
Location: Quebec
Hi everyones.

I was a bit out of this project, i am mostly a car enthusiast and have way too much projects...

Anyway, i ordered 4 set of PCB of my latest design of this IR amp.

This last one got a microcontroler on each board to monitor the activity, i think i have explained most of this in another thread...

I will let you know how it goes, and will post pictures soon.

thanks

Pat Allen
__________________
Electronic engineer for automotive market.
  Reply With Quote

Reply


Updated schematic of my class D ampHide 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
Class D schematic - help needed!! Kazus Class D 15 4th July 2009 02:09 AM
Looking for updated A40 schematic. gl Pass Labs 3 27th November 2007 12:56 PM
PCB and Schematic of tested D Class zox2003 Class D 6 18th November 2007 12:42 AM


New To Site? Need Help?

All times are GMT. The time now is 09:29 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki