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Class D Switching Power Amplifiers and Power D/A conversion

Finally Found TPA3255 gerber files.
Finally Found TPA3255 gerber files.
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Old 29th November 2019, 11:26 AM   #1
Nag is offline Nag  India
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Default Finally Found TPA3255 gerber files.

Hi Team,
I am looking to build class D amp TPA3251/TPA3255 and searched threads for Gerber files. not found any.
But Chipdipru has creative common license.
GitHub - chipdipru/RDC2-0034-TPA3255-classD-amplifier: Усилитель мощности класса D. TPA3255, PurePath, 315Вт Stereo или 600Вт Mono.
GitHub - chipdipru/LCF05: 2nd Order L-C Output Filter for Class D amplifier
any thoughts on this. My soldering skills are very basic never tried smd parts.
Initially I thought buy from aliexpress but previously I had strange experience with ESS2098Q2M board noisy.

So this time I am thinking to build my self. need 30W to 40W clean output each channel.
Please let us know your guidance on this.

Thanks,
Nag
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Old 29th November 2019, 11:28 AM   #2
Nag is offline Nag  India
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nice pics
Attached Files
File Type: pdf RDC2-0034A_sch.pdf (57.4 KB, 27 views)
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Old 29th November 2019, 11:29 AM   #3
Nag is offline Nag  India
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filter
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File Type: pdf LCF05_sch.pdf (8.4 KB, 15 views)
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Old 29th November 2019, 11:34 AM   #4
Nag is offline Nag  India
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images
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File Type: jpg 1.jpg (21.9 KB, 159 views)
File Type: jpg 2.jpg (94.5 KB, 158 views)
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Old 30th November 2019, 06:58 PM   #5
dzwer is offline dzwer  Bulgaria
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The layout of this PCB is awful to me...
Click the image to open in full size.
Click the image to open in full size.
I have one bundle at home, waiting for Rigol DS1054Z to arrive to me next week to test the amp and to open a thread about it.
Here is mine:
Click the image to open in full size.
My heatsink is from a Gigabyte PC mainboard and I use small fan, not shown in the picture.
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Last edited by dzwer; 30th November 2019 at 07:02 PM.
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Old 1st December 2019, 03:07 AM   #6
Nag is offline Nag  India
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Hi DZWER,
Thanks for the pic. As per the chipdip we can use it with 4 channels using capacitors in output path. Do you have any knowledge about it. Is it will imapct any sound quality.
I am planning to clone lxmini so need 4 channels with 30W-40W each channel.
Thanks,
Nag.
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Old 1st December 2019, 10:17 AM   #7
dzwer is offline dzwer  Bulgaria
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Of course it will impact the sound quality! You can try to solder some MKP capacitors in parallel of the output electrolytic capacitors, when in SE configuration.
For 30-40W you can use TPA3116 instead of TPA3255.
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Old 1st December 2019, 01:42 PM   #8
Nag is offline Nag  India
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TPA3255 has better than TPA3116 as per forum members.
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