UcD project, Subwoofer class d amp, full h-bridge, single supply +50 V - 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 6th March 2012, 06:07 AM   #21
diyAudio Member
 
lorylaci's Avatar
 
Join Date: Aug 2008
Location: Dabas, Hungary
Send a message via MSN to lorylaci
Quote:
Originally Posted by sameer x1 View Post
Hi Savu
hello just some tips i need to know before i start this project
1 will single PCB be good enough for this amp as i have little experience in designing ds pcb
2 can IRFP 250 N be used for experimental purpose once amp working irfb4227 will
be used
3 ultra fast ic LT1711 ANY substitutes this ic hard to get in my city
savu with little help from you i think i can suceed in my project
thanking you
sameer x1
Let me answer instead if Savu

1. If you have little exp, then a single sided PCB will suffer noise problmes etc. Layout is one the most important parts in Class-D
2. If you want to experiment with cheaper FETs, use IRF640N, since IRFP250N will have very high switching losses. For good performance you will need expensive FETs.
3. Search for outher ultra fast comparators with simmetrical output like: TL3016, LT1016, TL712
__________________
Olyan nem volt még, hogy ne lett volna valahogy
  Reply With Quote
Old 6th March 2012, 03:44 PM   #22
diyAudio Member
 
Join Date: Dec 2011
Default PCB LAYOUT

Hi Lorylaci
hello just need to know if this layout can work for the schematic savu posted its rough layout ground trace is around most components what more tips
must i do to make pcb suitable for this amp i am new to d class pcb designing
any tips are most welcome always a first time thats how i will learn
thanking you
sameer x1
Attached Images
File Type: jpg BRIDGED.JPG (380.2 KB, 623 views)
  Reply With Quote
Old 6th March 2012, 04:52 PM   #23
diyAudio Member
 
lorylaci's Avatar
 
Join Date: Aug 2008
Location: Dabas, Hungary
Send a message via MSN to lorylaci
Quote:
Originally Posted by sameer x1 View Post
Hi Lorylaci
hello just need to know if this layout can work for the schematic savu posted its rough layout ground trace is around most components what more tips
must i do to make pcb suitable for this amp i am new to d class pcb designing
any tips are most welcome always a first time thats how i will learn
thanking you
sameer x1
There seems to be errors with connections. Also you should check all the current loops, they seem to be going round noise sensitive tracks.
__________________
Olyan nem volt még, hogy ne lett volna valahogy
  Reply With Quote
Old 6th March 2012, 06:17 PM   #24
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
Sameer, for first try, rail voltage should 50-0, gate resistor also need to increase, u need to pass for the pcb first, hope lorylaci can help u with pcb error .

Pafi... where r u? hehehe Luka? Make IR2110 FullBridge alive for our Diyers
  Reply With Quote
Old 6th March 2012, 06:46 PM   #25
diyAudio Member
 
lorylaci's Avatar
 
Join Date: Aug 2008
Location: Dabas, Hungary
Send a message via MSN to lorylaci
Quote:
Originally Posted by norazmi View Post
Sameer, for first try, rail voltage should 50-0, gate resistor also need to increase, u need to pass for the pcb first, hope lorylaci can help u with pcb error .

Pafi... where r u? hehehe Luka? Make IR2110 FullBridge alive for our Diyers
As I sead before there are problems with IR2110. On a Hungarian forum, a forum member Gee Lee experimented with it (see here: Google Fordító)
And he could only make it with compromises. The minimum pulse width of IR2110 makes it impossible to use fast comparators, and to use high modulation limit (modulation limit over 70% causes high distortion).

Sorry to say that, but I hate if somebody wants everything complete. A page ago I posted an idea, I can even post its layout, if you want.
__________________
Olyan nem volt még, hogy ne lett volna valahogy
  Reply With Quote
Old 6th March 2012, 07:28 PM   #26
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
FullBridge +/- 65? lol... its for PA use hehe Yah i agree with you they need to start at first build, so maybe anyone wanna start making pcb for full bridge? I`ll not making it with IR2110 with fullbridge, if i want i just make 2 pcb and bridge it.

p/s - your protection on schematic work?
  Reply With Quote
Old 6th March 2012, 07:38 PM   #27
diyAudio Member
 
lorylaci's Avatar
 
Join Date: Aug 2008
Location: Dabas, Hungary
Send a message via MSN to lorylaci
Quote:
Originally Posted by norazmi View Post
FullBridge +/- 65? lol... its for PA use hehe Yah i agree with you they need to start at first build, so maybe anyone wanna start making pcb for full bridge? I`ll not making it with IR2110 with fullbridge, if i want i just make 2 pcb and bridge it.

p/s - your protection on schematic work?
In this schematic Gee Lee simpli bridged two moduls. This has a con that there is soem interferrence. If you make it on two separate PCB the interferrence is much bigger.

Are you interested in the HIP4080A plan? Its a full bridge (single supply max 72V), and I have a layout for that.
__________________
Olyan nem volt még, hogy ne lett volna valahogy
  Reply With Quote
Old 6th March 2012, 07:46 PM   #28
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
Hi lorylaci,

Its looks like great project, hmm i need to find hip ics first, i dont have it yet. and what about the layout? im not good in making pcb design, very bad ... damn.
  Reply With Quote
Old 6th March 2012, 07:58 PM   #29
diyAudio Member
 
lorylaci's Avatar
 
Join Date: Aug 2008
Location: Dabas, Hungary
Send a message via MSN to lorylaci
Quote:
Originally Posted by norazmi View Post
Hi lorylaci,

Its looks like great project, hmm i need to find hip ics first, i dont have it yet. and what about the layout? im not good in making pcb design, very bad ... damn.
Attached is the layout, in sprint layout format. I haven't tested it yet, but it is an amp based on UcD, and has a good predicted performance. HIP4080A has an ability to set dead-time, and has a very fast input comparator, and fast propagation delay. So modulation limit can be very high (which enables you to use the supply to maximum).
Attached Files
File Type: zip HIP408A.ZIP (27.2 KB, 229 views)
__________________
Olyan nem volt még, hogy ne lett volna valahogy
  Reply With Quote
Old 6th March 2012, 08:08 PM   #30
norazmi is offline norazmi  Malaysia
diyAudio Member
 
Join Date: Feb 2008
cool, very simple and few components, where is the parts details?
  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
UCD Based Fully Differential Full Bridge 450W RMS Amp classd4sure Class D 90 27th August 2012 08:48 PM
Single supply bridge UcD, referencing the signals Cro maniac Class D 82 13th February 2012 10:43 AM
full bridge selfosc class d amp Tekko Class D 21 12th May 2011 08:00 PM
Full bridge UcD Help, not work witali Class D 2 24th March 2006 02:34 PM


New To Site? Need Help?

All times are GMT. The time now is 02:20 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