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Class D Switching Power Amplifiers and Power D/A conversion

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Old 20th March 2010, 02:54 PM   #21
luka is offline luka  Slovenia
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my is not smd
nor did I make this one that way with laser printer, now I probably would

Click the image to open in full size.

see? coz I don't remember ever using SMD on this amp
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Old 20th March 2010, 02:56 PM   #22
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Ohhh heck can you finally give me link to your schematic and pcb PLEASE?

THANK YOU. Ajde bre jas ja sakam Slovenija

EDIT1: Oh I've found it on your site. I'll check it right now
EDIT2: Can you please send me PCB?


Last edited by DigiSoft; 20th March 2010 at 03:06 PM.
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Old 20th March 2010, 02:59 PM   #23
luka is offline luka  Slovenia
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http://www.classdaudio.co.cc/doc/Cla...dos/ClassD.pdf

As for PCB, I don't, no I DO NOT recomend you use my, also its better for you in the end if you make your own, really just take time
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Old 20th March 2010, 03:05 PM   #24
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Quote:
Originally Posted by luka View Post
http://www.classdaudio.co.cc/doc/Cla...dos/ClassD.pdf

As for PCB, I don't, no I DO NOT recomend you use my, also its better for you in the end if you make your own, really just take time
OK I read you had problems with you pcb. WHY? The traces ware too long?

This is maybe noob question but I'll ask it. This is only the driving circuit right? Now I need separate PCB with powerful output transistors right?

Last edited by DigiSoft; 20th March 2010 at 03:08 PM.
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Old 20th March 2010, 03:09 PM   #25
luka is offline luka  Slovenia
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well there are some smart thing one should do when switching high currents and two of them are short high current paths, and 2nd is ground plane, which I didn't then think about
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Old 20th March 2010, 07:46 PM   #26
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Originally Posted by luka View Post
well there are some smart thing one should do when switching high currents and two of them are short high current paths, and 2nd is ground plane, which I didn't then think about
I think you didn't see my edited post so I'll ask this noob question again.
Is this only the driver? Do I need to connect power transistors at the output of this PWM?
Ca you show me how you do that? Thanks.
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Old 20th March 2010, 08:55 PM   #27
81bas is offline 81bas  Germany
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Originally Posted by DigiSoft View Post
I think you didn't see my edited post so I'll ask this noob question again.
Is this only the driver? Do I need to connect power transistors at the output of this PWM?
Ca you show me how you do that? Thanks.
It is a complete amp, including power output mosfets, mounted underneath of PCB (TO-247 package)...
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Old 20th March 2010, 09:11 PM   #28
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Originally Posted by 81bas View Post
It is a complete amp, including power output mosfets, mounted underneath of PCB (TO-247 package)...
OK Thank you. I'll see the schematic again and I'll try to make PCB.
I'll post it here.
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