TAS5717: Layout review request

Hi Naveen

i checked your schematic.

2 points seems having some concern.

1. output inductor Isat is a little too small. using an inductor Isat larger than 1.5A would be better. simple calculation 12/8 = 1.5A 

2. what is your sequence for your power supply. pvdd quicker than 3.3v, or you can power 3.3v faster than pvdd.

if pvdd is faster, it would be better to refer below circuit to prevent pop noise happen. although it is a very rare case.

BTW, i cannot open above pcb file, you can share me .brd file or figure is also ok.

thanks.

jesse

Hi Jesse, 

Thanks for the feedback. We will change the inductor and provide the option for pop noise reduction as suggested.

I did share the .brd file in zip format earlier. PFA the .brd file as is.

Carrier Card_GARUDA-2290_DVT_flex_audio.brd

Thanks,

Naveen

Hi Jesse, 

Thanks for the feedback. We have changed the inductor to MWSA0503S-150MT, which has 2A Isat current.

Also, provided the option to reduce pop noise as below:

Thanks,

Naveen

Naveen

for i2s clk and data speed is high, it would be better to have GND line between them to prevent interference.

thanks.

jesse

Hi Jessie, 

Thanks for the feedback. We are using 10W dual stereo speakers. Please help confirm if the trace widths of the speaker output lines are sufficient.

Thanks,

Naveen