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

Philips UCD application note
Philips UCD application note
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
Thread Tools Search this Thread
Old 28th August 2012, 07:17 PM   #491
stewin is offline stewin  Kenya
diyAudio Member
Join Date: Jul 2007
thanks sweet perfume. pls post the thread no . i wanted to drop the speed to 250khz so as to use 4pairs of irfp250n.

i love this amp too than ir21110 .
  Reply With Quote
Old 28th August 2012, 07:40 PM   #492
stewin is offline stewin  Kenya
diyAudio Member
Join Date: Jul 2007
Originally Posted by sweetperfume View Post
Place a diffrentrial resistor in place of R9....it sets freq and dead time u need to set that for every mosfet if u change......i had posted a new thread after finishing with this thing....take a look at it..u can see I had cut a resistor below...i placed a potentiometer instead....but I can say its simple and awesome......with higher voltage....it is better than Ir2110

btw did you mean r9 which is 220ohms in the below schema?
Attached Images
File Type: jpg ucd discreet mode.JPG (158.1 KB, 547 views)
  Reply With Quote
Old 29th August 2012, 03:30 PM   #493
sweetperfume is offline sweetperfume  India
diyAudio Member
Join Date: Dec 2010
Location: INDIA
Originally Posted by stewin View Post
btw did you mean r9 which is 220ohms in the below schema?
Sorry stewin.....its not that resistor I was talking about....i thought this design must be the original one which philips used....in this design you can se there is a differential resistor R36...it sets dead time and frequency....but when response is clear there is still some prob...output is never the same...when I got sine wave the output freq was more than 1khz... But response was good....
  Reply With Quote
Old 13th August 2013, 03:17 PM   #494
Soundblaster is offline Soundblaster  United States
diyAudio Member
Join Date: May 2006
Default Philips Other UCD application

I see a lot of comments regarding the discreet version of a uCD amplifier. Y'all should check out the VAMP600 amplifier that used an integrated power comparator and power stage.

This amplifier works as-is, is stable, and remarkable in its presentation.
I have gerber files, BOM's etc. if anyone is interested. What's too bad is the Silicon is long since discontinued. Probably available in distribution though.
  Reply With Quote
Old 13th August 2013, 08:50 PM   #495
tom42107 is offline tom42107  United States
Account disabled at member's request
Join Date: Feb 2010
Soundblaster, I would love some info on the VAMP600. Thanks.

  Reply With Quote


Philips UCD application noteHide 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
a nice application note about damping LC networks "snubbers" mirlo Power Supplies 7 11th November 2005 09:46 PM
10w class d amp. application note partyjups Solid State 1 8th March 2002 10:46 AM

New To Site? Need Help?

All times are GMT. The time now is 03:15 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio