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

Class-D Discrete vs Chips?
Class-D Discrete vs Chips?
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 17th May 2011, 02:20 PM   #1
markusA is offline markusA  Sweden
diyAudio Member
markusA's Avatar
Join Date: Dec 2009
Location: Gothenburg
Default Class-D Discrete vs Chips?

In the traditional amplifier world OP-amps and chips in general are often considered sort of "low end".
Now we're in the Class D forum and the rules have suddenly changed.

Which is better? To use transistors or chips?
When you buy OP-amps and readymade cirquits they are already optimised for performance, is there any reason to use the old school components beside maybe saving a $? I said maybe because the new cirquits aren't so expensive anymore.
  Reply With Quote
Old 17th May 2011, 10:07 PM   #2
nigelwright7557 is online now nigelwright7557  United Kingdom
diyAudio Member
nigelwright7557's Avatar
Join Date: Apr 2008
Location: Carlisle, England
For a first design I would go with a chip solution.
Chips like the irs2092 have deadtime and over current protect built in.

Once you have mastered a chip solution you will be ready for a discrete design.
PCBCAD51 pcb design software. 2018 version out now. https://www.ebay.co.uk/sch/i.html?_f...cad51&_sacat=0
  Reply With Quote
Old 17th May 2011, 10:09 PM   #3
markusA is offline markusA  Sweden
diyAudio Member
markusA's Avatar
Join Date: Dec 2009
Location: Gothenburg
I take it discrete cirquits are still king then?
(As long as it's designed the right way)
  Reply With Quote
Old 18th May 2011, 08:13 AM   #4
Hitec is offline Hitec  Finland
diyAudio Member
Join Date: Jan 2010
Somehow I think IC is always better if specifications for design are good and design is well made. Anyway, I don't have any experience on comparing these two objectively. Some good reasons could be:
  • Tighter layout on substrate. This translates to better EMI properties, smaller parasitic components and shorter transmission lines (digital circuits).
  • Well tested as no one makes on IC before making sure it works
  • Smaller footprint on PCB
  • Ease of use --> may be a downside for a hobbyist
However, it is interesting to make a circuit to work with discrete components.
  Reply With Quote
Old 18th May 2011, 09:33 AM   #5
dileepkella85 is offline dileepkella85  Singapore
diyAudio Member
Join Date: Feb 2011
For very first design IC is the best choice.........once got experienced then you can move to discrete components as your requirements change.
  Reply With Quote
Old 19th May 2011, 11:20 AM   #6
studiotan is offline studiotan
diyAudio Member
Join Date: Apr 2011
Default chip vs discrete


(i'm french)

i'm persuaded than chip is better, shorter lenght...

the discrete make a lot of loss....

oNLY BLIND TEST CAN easily answer to this questtion

  Reply With Quote
Old 19th May 2011, 12:36 PM   #7
marce is offline marce  United Kingdom
diyAudio Member
Join Date: Jun 2007
Location: Blackburn, Lancs
Class-D Discrete vs Chips?
High DI/Dt switching etc the technology is better with integrated designs, using discretes and especialy through hole, you are adding parasitic inductance, not good for class D.
  Reply With Quote


Class-D Discrete vs Chips?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
discrete opamp class A branet Digital Source 17 25th October 2011 08:04 AM
My discrete class d project nigelwright7557 Class D 24 15th December 2010 11:10 PM
My all discrete prefilter class-D kartino Class D 10 7th August 2006 09:47 AM
My 13x discrete class-D kartino Class D 6 21st November 2005 08:44 AM
recommend discrete Class D rellik Class D 11 3rd November 2005 02:27 AM

New To Site? Need Help?

All times are GMT. The time now is 12:23 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