What's different UCD180 and UM10155 - 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 15th July 2008, 07:20 AM   #1
xxxxxxx is offline xxxxxxx  United States
diyAudio Member
 
Join Date: Jan 2008
Default What's different UCD180 and UM10155

I interest to build new amp.

How about UCD180 V.S. UM10155

http://www.nxp.com/acrobat_download/.../UM10155_1.pdf

Thanks.
  Reply With Quote
Old 15th July 2008, 08:46 AM   #2
ntropy is offline ntropy  Switzerland
diyAudio Member
 
Join Date: Mar 2007
They are both designed by Bruno Putzeys. Bruno worked for Philips (now NXP) before he worked for Hypex where he designed the UcD180.
The UcD180 is, as far as I understand, based on this UM10155 application note but is an improved design with better switch driver and other improvements.
Bruno sometimes answers on diyaudio as well but since parts of the ucd180 modulator print is covered in black expoxy, I guess the exact changes remain a mistery
  Reply With Quote
Old 16th July 2008, 01:55 AM   #3
xxxxxxx is offline xxxxxxx  United States
diyAudio Member
 
Join Date: Jan 2008
Thanks for your answer.

And how about sound of Ucd compair to Tripath.
  Reply With Quote
Old 24th July 2008, 06:56 AM   #4
diyAudio Member
 
Join Date: Jun 2005
Location: Sunderland
the main difference is a passive pole added to the feedback and some additional startup circuitry, search for Bruno's AES paper that gives more details
__________________
Anthony C Smith MAES MinstSCE
-I think rain is wet so who am I to Judge-
  Reply With Quote
Old 24th July 2008, 11:00 AM   #5
Account Disabled
 
Join Date: May 2008
Quote:
Originally posted by Anthony C Smith
the main difference is a passive pole added to the feedback and some additional startup circuitry, search for Bruno's AES paper that gives more details

That's not what was asked, but would be the very least of the differences that we won't be discussing.

Of pertinence to the question is that one is a completed, refined, robust high performance module that only needs a PSU.

NXP offers only the most basic concept, without refinement is crippled, and a diy version of it will mirror the lack of ability or dedication of the user. It would be the more challenging of projects with the greater potential to learn and the least potential for performance.

Such a question answers for itself.
  Reply With Quote
Old 25th July 2008, 02:16 AM   #6
xxxxxxx is offline xxxxxxx  United States
diyAudio Member
 
Join Date: Jan 2008
Thanks for all comment.


Now I'm use Pop-Pulse and Trend TA-10.1

It's give excellent sounds for my system. (my old amp is gainclone.)



But I want to make or buy new amp.

To give more sounds quality for my system.

UCD180 is an Answer?


Thanks.
  Reply With Quote
Old 26th July 2008, 06:19 AM   #7
diyAudio Member
 
Join Date: Jun 2005
Location: Sunderland
Quote:
Originally posted by classdphile



That's not what was asked, but would be the very least of the differences that we won't be discussing.

What a very terse and rude way of replying;
as both items are available as complete modules just requiring a psu my reply was very relevant; the main difference is the passive pole; this also makes a very great difference to the stability and operation of the modulator.
Having tried it myself it explains the performance differences from those ucd amplifiers built to the patent (no passive pole) and Bruno's comercial implimentation (with passive pole)- I was merely pointing to the fact the AES paper contains this information for those people interested
__________________
Anthony C Smith MAES MinstSCE
-I think rain is wet so who am I to Judge-
  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
UM10155 from NXP monaural Class D 13 3rd November 2009 02:28 AM
UCD180 st or UCD180 hd ? Davy Class D 10 5th August 2008 06:30 PM
UcD180 Jonasz Class D 2 28th July 2005 11:16 AM
UCD180 Vs Others jkeny Class D 21 18th October 2004 11:18 PM


New To Site? Need Help?

All times are GMT. The time now is 03:45 PM.


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