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Class D Switching Power Amplifiers and Power D/A conversion

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Old 26th March 2013, 04:42 PM   #661
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That is some amazing work mantabernd respect!!!
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Old 26th March 2013, 04:53 PM   #662
xrk971 is offline xrk971  United States
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Mantabernd,
Awesome work! Very nicely done. Looks like a commercial product. How did you size the heatsink (what is dissipation req'd)? I am considering using a CPU heatsink with heatpipes.
Regards,
X
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Old 26th March 2013, 05:11 PM   #663
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Quote:
Originally Posted by xrk971 View Post
Mantabernd,
Awesome work! Very nicely done. Looks like a commercial product. How did you size the heatsink (what is dissipation req'd)? I am considering using a CPU heatsink with heatpipes.
Regards,
X
Hello! Thanks! I did no calculation for the heatsink, I found three of these heatsinks (socket 423, pentium 4) in the thrash so I took them ;-)

In normal operation the heatsinks gets not really hot, a bit warm but not hot. At full output power you'll need a fan.
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Old 30th March 2013, 06:05 PM   #664
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APEX D200 with SMPS

Smps & Apex D200 - YouTube
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Old 31st March 2013, 03:06 PM   #665
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latest Project


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Old 31st March 2013, 06:48 PM   #666
xrk971 is offline xrk971  United States
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Default TI TPA3116D2 - Fantastic sounding amp!

This amp was made using the PCB provided by Dug (Thanks Dug!). It sounds really good, the best amp I now have. Amazing resolution, detail, and depth of bass.

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More in this thread TPA3118D2
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Old 3rd April 2013, 02:25 AM   #667
dheming is offline dheming  United States
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This is a simple little amp based around the AMP6 kit I made for a friend a few years ago. For power we just used a Pyramid brand power supply for simplicity. The enclosure is a Hammond die cast if I remember right.

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The vol pot is a Blue Velvet, input caps are Mundorf M-Cap, signal wire is Neotech and everything else is just quality generic parts. This was a fun little amp project.

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Old 3rd April 2013, 03:50 PM   #668
vdij is offline vdij  Moldova
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Very good!
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Old 6th April 2013, 12:41 PM   #669
Baldin is offline Baldin  Denmark
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Default 5 x 5 cm class-d ... should be good for 150W

My new very small Class-D amp up and running.
So far just on +-30V to test it out.
It should be good for up to +-50V I think. Limiting factor will be heat from the 12V supply for the switches using a single FZT657 .... it has the ground plane as heatsink.

Self oscillating design, based on Op-275, MAX913, LM5104, IRFB5620 and a Ice Components 1D17A-220M coil.

At the moment runs at 229 kHz. I'm waiting for the right output cap, so I had to just use a small one I had on stock. Also waiting for decoupling capacitors; 1uF ceramic, so it is mounted completly without at the moment .... still looks good on the scope
Need some snubbers at the output fets as well ... and with my new Rigol 50MHz scope this should be easy to find the right components for.

Cute right?
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File Type: jpg IMG_5119 (Medium).JPG (207.8 KB, 254 views)
File Type: jpg IMG_5120 (Medium).JPG (183.1 KB, 216 views)
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Old 6th April 2013, 12:58 PM   #670
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Cute little bugger
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