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

3 Level PWM
3 Level PWM
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 13th May 2012, 03:38 AM   #11
Workhorse is offline Workhorse
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Quote:
Originally Posted by phase_accurate View Post
I once made simulations with a tri-state delta-sigma topology that looked very promising. Never tried it in practice though. Yours seems to be a bit similar.

Properly implemented it would have advantages like lower switching frequency, lower RFI levels, improved loop stability, reduced supply pumping and decreased body-diode conduction problems - compared to two-level delta-sigma amps.

Regards

Charles
Charles,

How can you say that body diode conduction will be reduced in 3-level modulation as compared to 2-level modulation?

regards,
Kanwar

Last edited by Workhorse; 13th May 2012 at 04:01 AM.
  Reply With Quote
Old 13th May 2012, 09:52 AM   #12
Pafi is offline Pafi  Hungary
diyAudio Member
 
Join Date: May 2004
Location: Budapest
Quote:
How can you say that body diode conduction will be reduced in 3-level modulation as compared to 2-level modulation?
Agree! Diode conduction problem depends on output topology, not modulation method.
  Reply With Quote
Old 13th May 2012, 10:26 AM   #13
phase_accurate is offline phase_accurate
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
The whole was depending on a single-ended three level output stage and the preferred way I would have implemented it would give some relief regarding reverse-recovery.

Regards

Charles
  Reply With Quote
Old 13th May 2012, 12:25 PM   #14
Workhorse is offline Workhorse
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Charles,
What would be that preferred way, just like the autoformer [referring to your cross-conduction reduction technique thread]at switching node?


regards,
Kanwar
  Reply With Quote
Old 14th May 2012, 06:38 AM   #15
phase_accurate is offline phase_accurate
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
No it would have been a "real" three-level output stage.

Regards

Charles
  Reply With Quote
Old 8th August 2013, 10:41 AM   #16
Workhorse is offline Workhorse
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Quote:
Originally Posted by phase_accurate View Post
No it would have been a "real" three-level output stage.

Regards

Charles
Charles,

You mean using series schottky or i am missing something?

regards,
Kanwar
  Reply With Quote

Reply


3 Level PWMHide 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
Convert Line Level to Electric Guitar Level miallen Instruments and Amps 4 16th May 2010 01:22 PM
Speaker level to line level converters qguy Subwoofers 2 9th December 2007 03:58 PM
speaker level input vs line level question crippledchicken Subwoofers 4 17th July 2007 03:36 AM
lesser of two evils, high level -> line level, digital volume control mazurek Solid State 3 19th November 2006 12:25 AM
how to bring down line level signal to preamplifier level deji Solid State 15 15th April 2004 04:13 PM


New To Site? Need Help?

All times are GMT. The time now is 09:10 AM.


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
Wiki