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Class D Switching Power Amplifiers and Power D/A conversion

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Old 10th April 2011, 08:44 PM   #1
aditya is offline aditya  India
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Default TPA3122

i have made this pcb layout for TPA3122 would like to know how it is,, i know its not smd but some reasons are the reasons for me to use axial components
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Last edited by aditya; 10th April 2011 at 09:07 PM.
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Old 10th April 2011, 09:08 PM   #2
aditya is offline aditya  India
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yes the coils are from coilcraft
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Old 10th April 2011, 11:23 PM   #3
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There's a number of problems I see right away. First of all /SD and MUTE are not connected to anything. You also have ground traces wandering around instead of having direct paths to pins. Your PVCCR/PGRNDR power cap is hanging off the board. I'm assuming the two caps from AVCC1/AVCC2 to ground are a mono cap and a power cap, not two mono caps.

Try to make your paths as direct as possible. Don't have your ground traces circle all about. Start with a ground plane, then subtract from it for the other traces. Work with a netlist -- don't try to do things by sight (especially important for beginners).
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