Ultra Simple Class D

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#281
2x Iron Powder Toroid Core T200-2, Iron Powder Toroid Core T157-6 items in urbasket eu store on eBay
this URBASKET EU STORE is a ripper please be careful in dealing with him ARTHUR
i hvae still not got my 10 t157-2 cores 3 MONTHS have passed
warm regards
andrew lebon
 
#283
#286
Connect Trasducer to this circuit

Hi!

Nice simple class D amp!

I was wondering if this amp would work fine in the 38-42 kHz range and what to do to connect it to a high impedance piezoelectric transducer (custom transformer I suppose). I want to start playing with relative high power ultrasounds 🙂

Thanks so much for any tip!
 
#287
I've created a layout for this one.

I added trigger for protection circuit and added gate resistor diode.
Also adjusted some values for slightly higher than +-50V operation.
You can opt for the original values if you want it to run it for lower voltages.

I added the fuse so I can easily route the GND trace haha.
 

Attachments

  • 300W-ClassD-Bottom(2.9 x 4.9).pdf
    300W-ClassD-Bottom(2.9 x 4.9).pdf
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  • 300W-ClassD-All(Values).pdf
    300W-ClassD-All(Values).pdf
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  • 300W--ClassD-All(Names).pdf
    300W--ClassD-All(Names).pdf
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  • 300wClassD.png
    300wClassD.png
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  • 300W-ClassD-Schem.pdf
    300W-ClassD-Schem.pdf
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#288
jlester87 said:
I've created a layout for this one.

I added trigger for protection circuit and added gate resistor diode.
Also adjusted some values for slightly higher than +-50V operation.
You can opt for the original values if you want it to run it for lower voltages.

I added the fuse so I can easily route the GND trace haha.
Click to expand...

have you tested it with +/-56vlts successful , do the outputs or gate drivers heat or operate normal at that voltage ?
 
#293
jlester87 said:
I've created a layout for this one.

I added trigger for protection circuit and added gate resistor diode.
Also adjusted some values for slightly higher than +-50V operation.
You can opt for the original values if you want it to run it for lower voltages.

I added the fuse so I can easily route the GND trace haha.
Click to expand...

you already have it armed?: D
 
Last edited:
#296
stewin said:
but after hearing the clarity of this amplifier i decided to use the original version which has been simulated by norazmi . here is my layout and artwork .
Click to expand...

After reading through this entire thread I've decided to jump in and try to etch my own pcb. There are many different versions of this amp in this thread, but Stewin's layout and artwork look good. I do have a beginner question though. Most of the amps that people are building here are one sided but it looks like Stewin's pcb artwork is two-sided. Is that right?

Tom
 

Attachments

  • Class D 200 Wrms with 2 mosfet pcb artwork.jpg
    Class D 200 Wrms with 2 mosfet pcb artwork.jpg
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#298
Thanks Norazmi, I was thinking maybe I should start out with a single sided board first. Is there a good, one-sided pcb of this ultra simple class D amp that you would recommend ? I have all the parts and would love to build it.

Tom
 
#299
yes its ok for this design because its not so sensitive like ucd. your design seems good to go, but always double check for the component placement with right value. OCP is possible for this module and i`ll give it a try when i have time.

And yes i have one which im always made it because this amp is so cheap and hifi quality, give me your email and i`ll send it to you. you can go with your version and just match the value for the parts or else. 😀
 
#300
Hi Norazmi,

Regarding short circuit protect, is it ok to short the U1B output to ground to stop the gate drive? Or is there a better implementation?
 

Attachments

  • gate drive.PNG
    gate drive.PNG
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