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Class D Switching Power Amplifiers and Power D/A conversion

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Old 24th June 2004, 01:52 PM   #21
Bricolo is offline Bricolo  France
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what's UCD?

I think I need something easy to build, and IC mosfet driver with a direct sound input (no discrete)

what's better, full or half bridge?


something loike 200W in 8R would be nice
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Old 24th June 2004, 04:43 PM   #22
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http://diyaudio.com/forums/search.ph...der=descending
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Old 24th June 2004, 05:00 PM   #23
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what parameters did you use for the search?
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Old 24th June 2004, 05:16 PM   #24
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Default Reference Design

I'm not sure there is a "reference design" for anything. By the time something becomes a "reference design" it is obsolete.

If you go to www.schematicsforfree.mattsoft.net make sure you click on the "File Index" link and not the individual folder links. I have been unable to upload a fix to the site for an as yet unknown reason.

In the audio circuits section, there is an area dedicated to Class-D amplifiers.
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Old 24th June 2004, 05:23 PM   #25
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Default schematicsforfree.mattsoft.net

The site is malfunctioning right now. Please try again in a few days.
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Old 24th June 2004, 05:41 PM   #26
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I'm definitely out of luck
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Old 24th June 2004, 09:09 PM   #27
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Quote:
what parameters did you use for the search?
just three chars "UcD"..something wrong?
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Old 24th June 2004, 10:34 PM   #28
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nothing!
thank you
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Old 25th June 2004, 12:07 AM   #29
Bricolo is offline Bricolo  France
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tell me if I'm wrond, but from what I've understood (I've real all the threads from the search), UCD isn't a ready to use IC, but a topology (that no IC seems to use for now)


I'd like to build something simple, National's class d amp is nice. It uses one chip with an audio input, and a "mosfet" output. The second chip is a mosfet bridge.
I'm looking for something like that (but with more power). If the bridge is made of discrete mosfets that's no problem. I just don't want to have to deal with the integrator, the comparator, the feedback and such things
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Old 25th June 2004, 05:45 AM   #30
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I just don't want to have to deal with the integrator, the comparator, the feedback and such things
So why not ? There are working designs out there, you'd just have to pick one. One worked-out example is the one from the IR tutorial that was already mentioned above.

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