About my TAS5630 build..
I have been planning to build an amplifier based on the TI's TAS5630.
The EVM and all the designs in the internet I have seen seem to have the PVDD caps placed over the outputs. Is that necessary? I was thinking of feeding the chip from underneath and instead of four 1000uF caps, having two 2200uF caps [picture attached]. This would allow for a much easier design of the output side . I heard the 2,2uF ceramic caps should be as close to the chip as possible, so I'll move them.
But does this sound like a good idea at all?
I'm going to run it in PBTL mode, ~180W at max.
I found with class d that layout and proximity of decoupling caps to be vital.
I had a 12v regulator 3 inches from the IC and the IC kept resetting at a high frequency. I found I had to decouple the 12 volts not only at the chip but close to the regulator too.
I also had trouble with tyhe B+, GND and B- decoupling, i found these had to be close to the output MOSFETs.
Class d can be a real pain to get right.
If you have seen a layout tha tworks then use it.
It can get expensive if you need 2-3 iterations of pcb before it works.
Thanks for the responses. I have the regulator on another board so that shouldn't be a problem. Groundplane will be a bit difficult though. I can only make single sided boards at school. :/
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