IR2010 amplifier-New Project - Page 3 - 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 4th December 2007, 09:45 PM   #21
Banned
 
Join Date: Jan 2005
also called shoot through, most commonly caused by too little or no deadtime.
  Reply With Quote
Old 5th December 2007, 02:50 AM   #22
zox2003 is offline zox2003  United States
diyAudio Member
 
Join Date: Nov 2004
Location: usa
I GOT AMPLIFIER RUNNING NICE...Adjusting dead time helped a lot..My FET's are not running hot anymore (dead time RCD= 2K+220p),amplifier sounds a lot nicer and powerfull.There is still some ringing on gates but I think that reason is my layout.This is prototype anyway and I will start working on final layout with a lot improvements.I am posting pictures of current layout and you are guys more then welcome to make comments and suggestions.
BIG THANKS to everybody but specialy to Eva and Luka for help on this little project.I will keep you updated on regular basis.I will post schematic soon and layout after that.

Here are two pictures:

P.S Little vertical board is modulator(LM311) and inverter (CD4069)-SMD
Attached Images
File Type: jpg top re.jpg (25.2 KB, 1209 views)
  Reply With Quote
Old 5th December 2007, 02:51 AM   #23
zox2003 is offline zox2003  United States
diyAudio Member
 
Join Date: Nov 2004
Location: usa
here is a bottom side:
Attached Images
File Type: jpg bot re.jpg (31.4 KB, 1147 views)
  Reply With Quote
Old 5th December 2007, 05:16 AM   #24
Eva is offline Eva  Spain
diyAudio Member
 
Eva's Avatar
 
Join Date: Oct 2003
Location: Near the sea
Send a message via MSN to Eva
Concerning dead time, remember that you should tune the circuit for as little dead time as possible and check how it drifts with temperature. 2K and 220p produce almost 360ns delay (for V/2), this is really high The 30ns provided by the IR2010 should be already enough if the input signals don't overlap and the gates are charged and discharged reasonably fast.

Concerning the output inductor, you should not place it that close to the modulator. Toroid magnetic leakage only tends to cancel in the far field. To understand this, you can try making a little loop antena by connecting the ground lead of an oscilloscope probe to the tip and "sniffing" with it in different directions and positions around the toroid inductor...
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  Reply With Quote
Old 5th December 2007, 08:54 PM   #25
diyAudio Member
 
Join Date: May 2005
Location: São Paulo
Send a message via MSN to lindomar
Is sigma-delta or based in Freedos amplifier "PWM"?
  Reply With Quote
Old 5th December 2007, 09:01 PM   #26
zox2003 is offline zox2003  United States
diyAudio Member
 
Join Date: Nov 2004
Location: usa
I have two modulator versions:

1. self-oscillating (LM311+CD4069)

and

2. triangle-wave generator (TL082),preampl(TL082) and comparator (LT1016)

Both of this boards are swapable (with little modification in feedback) on same amplifier motherboard (they are vertical PCB on motherboard).

As far as how they compare-----they are sounding about same.
  Reply With Quote
Old 5th December 2007, 09:11 PM   #27
Banned
 
Join Date: Jan 2005
put the feedback componentsd on the daughter boards and you only need to swap board
  Reply With Quote
Old 5th December 2007, 10:35 PM   #28
zox2003 is offline zox2003  United States
diyAudio Member
 
Join Date: Nov 2004
Location: usa
Here is first step in new PCB Layout.I just did first part of new layout-modulator.Line around components is Ground and it will be conected to GND on top (directly) and thru vias to GND on bottom side.Area where components are ,will be "covered" on bottom side with GND also.So this is just first piece of PCB.I will keep working on it and post pictures here for your comments and suggestions:
Attached Images
File Type: jpg modulator rev2.jpg (79.7 KB, 1035 views)
  Reply With Quote
Old 7th December 2007, 04:39 AM   #29
G4ME is offline G4ME  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Location: Location
Send a message via AIM to G4ME
would you mind posting a full schematic of you your final design?

I have been trying to get the IR2011 to work for the past few weeks and i can't seem to be making any progress.

Thanks
__________________
Two little mice fell in a bucket of cream. The first mouse quickly gave up and drowned. The second mouse, wouldn't quit. He struggled so hard that eventually he churned that cream into butter and crawled out.
  Reply With Quote
Old 7th December 2007, 04:59 AM   #30
zox2003 is offline zox2003  United States
diyAudio Member
 
Join Date: Nov 2004
Location: usa
I will post schematic as soon as I combine all pieces together.I am using IR2010 (not IR2011).
Here is update on PCB(almost done):
Comments welcome...
Attached Images
File Type: jpg modulator rev2.jpg (77.7 KB, 972 views)
  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
Amplifier Project gbowne1 Tubes / Valves 16 24th April 2008 11:55 PM
Pre-amplifier Project Help tumler Solid State 2 8th August 2007 11:15 PM
New Amplifier Project The Peasant Solid State 40 7th February 2005 12:15 PM
What is the best amplifier project...? Danyele82 Solid State 11 2nd May 2004 03:05 PM
My new amplifier project sajti Solid State 7 14th August 2003 03:15 PM


New To Site? Need Help?

All times are GMT. The time now is 10:24 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