I have worked on TPA3255 based BTL amplifier for a while now. As this is my first time attempting to layout a class D amplifier I would appreciate some feedback.
I have tried to follow the layout and schematic from the EVM, the feedback given in other threads on here, as well as SLAA788A for the PFFB, but I have probably missed something.
The layout is done on a two layer PCB and I will get all the SMD components assembled by the PCB manufacturer.
The VIA stitching is not done yet, so that is missing. The connectors I have mainly chosen for easy testing.
I have attached both schematics and PCB screenshots here, as well as a PDF of the schematic.
Thanks in advance!
I have tried to follow the layout and schematic from the EVM, the feedback given in other threads on here, as well as SLAA788A for the PFFB, but I have probably missed something.
The layout is done on a two layer PCB and I will get all the SMD components assembled by the PCB manufacturer.
The VIA stitching is not done yet, so that is missing. The connectors I have mainly chosen for easy testing.
I have attached both schematics and PCB screenshots here, as well as a PDF of the schematic.
Thanks in advance!
Attachments
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side_3d.png150.4 KB · Views: 76
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top_32_no_pth.png144.1 KB · Views: 75
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top_3d.png154.9 KB · Views: 73
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TPA3255_pffb_amp.pdf855 KB · Views: 47
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pffb.png13.7 KB · Views: 69
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output_filter.png15.5 KB · Views: 64
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main_tpa3255.png54.1 KB · Views: 65
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preamplifier.png26.1 KB · Views: 68
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inputs.png29.3 KB · Views: 62
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power_supply.png41.6 KB · Views: 55
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overall.png27.2 KB · Views: 58
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rear_copper.png66.9 KB · Views: 56
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front_copper.png147.2 KB · Views: 51
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tpa3255_closeup.png122.2 KB · Views: 70