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 24th October 2008, 01:57 AM   #1
diyAudio Member
 
Join Date: May 2007
Default 1500W RMS Class D PCB - which Class D Driver Chip is it ?

Hello,

I have here 2 working Class D PCBs, Output Power is about 1600W RMS@4 OHM, Rail Voltage is 150V

IC Manufacturer is removed, does everybody know this Driver Device ?

This Class D Amplifier is Full Bridged and has 8 pcs. IRFP250N Output Devices each Channel


Sound is very very good powerful bass....
Attached Images
File Type: jpg imgp1988.jpg (93.7 KB, 2326 views)
  Reply With Quote
Old 24th October 2008, 12:28 PM   #2
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Flatpak SMT IR2113
  Reply With Quote
Old 24th October 2008, 01:03 PM   #3
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
Are you sure that four 123nC MOSFET may be optimally driven with just an IR2113? Maybe with an IR2010? I'm in doubt... Is it a full range amplifier? Judging by the size of the output inductor, switching frequency should be pretty high.

Anyway, it seems like a year 2007 design yet they are still stuck with junk like IRFP250N. For example, a single pair of a certain recent TO-220 model can do the work of 3 pairs of IRFP250N.

Also, being a 150V full bridge, it should produce nearly 2500W at 4 ohms, not 1500W which requires just a bit over 100V. But with such a small output inductor, saturation current can't be very high either...
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  Reply With Quote
Old 24th October 2008, 01:25 PM   #4
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
IR2113/2110 are different only on basis of max voltage ratings i.e. 600/500V respectively, rest ratings are similar.

I have tried IR2113 with a pair of IRFP250N with rails at +/-80V and SW=220kHz with no prob.

Though i have stopped using IR chips, i prefer TC4420
  Reply With Quote
Old 24th October 2008, 01:28 PM   #5
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
I meant IR2010. The problems are IC heating and delay, of course.
__________________
I use to feel like the small child in The Emperor's New Clothes tale
  Reply With Quote
Old 24th October 2008, 01:31 PM   #6
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Yeah, only if that chip is IR2010.
  Reply With Quote
Old 24th October 2008, 06:22 PM   #7
qsa is offline qsa  Germany
diyAudio Member
 
qsa's Avatar
 
Join Date: May 2007
I have here a schematic from Class D amplifier, but there is one another big IC, does anybody have idea which device ?

Ops are LM393, MC74HC04, 339 = ?

but this IC ?
Attached Images
File Type: jpg class d schematic.jpg (89.8 KB, 2180 views)
  Reply With Quote
Old 19th February 2010, 11:51 AM   #8
diyAudio Member
 
Join Date: Jul 2008
qsa schematic is unreadsable
  Reply With Quote
Old 19th February 2010, 12:31 PM   #9
diyAudio Member
 
theAnonymous1's Avatar
 
Join Date: Feb 2004
Location: Anonymityville
Are you sure those aren't MOSFET drivers like IX6R11S3?
__________________
"If you don't like funerals don't kick sand in Ninja's face." - Ninja

Last edited by theAnonymous1; 19th February 2010 at 12:37 PM.
  Reply With Quote
Old 19th February 2010, 06:03 PM   #10
AP2 is online now AP2  Italy
diyAudio Member
 
Join Date: Dec 2009
Location: Italy
Hi,
project looks very good.
2 IRFP250 for side ... it is a bit heavy to driving for IR21xx...I think.
  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
Single Chip Class D Gerula Class D 2 13th June 2007 10:09 PM
class d chip amp sagarverma Chip Amps 19 23rd October 2005 05:08 PM
new class T chip amp JZatopa Class D 1 17th October 2005 10:05 AM
Any Class AB Chip Amps ? LS Chip Amps 1 22nd July 2004 08:07 PM
class H chip kit,unsuccessful mikee12345 Chip Amps 4 26th February 2004 08:21 AM


New To Site? Need Help?

All times are GMT. The time now is 07:43 AM.


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