TPA3223: Filtering of GVDD and AVDD

Guenter Goldbach

Part Number: TPA3223

The datasheet states that poepr filtering for GVDD and AVDD shall be provided with a 3R3 and 1uF. Howver it shows the series resistor in th GVDD (pin1), other than in the EMV module. I believe that GVDD is for teh gate drive and shall be conncted dirrectly to 5V while the analog AVDD shall be filtered. The figures 10.1 nd figures 10.6 are incorrect in this case.

over 1 year ago

0 Feeney Xiao over 1 year ago

TI__Intellectual 2110 points

Hi Guenter

It's recommend to add the filter circuit as EVM user guide, because the EVM had been verified.

The datasheet deviation from the guidance offered in the TPA3223 device EVM User's Guide, which is shown in Section 10.1 may result in reduced performance, errant functionality, or even damage to the TPA3223 device.

+1 Guenter Goldbach over 1 year ago in reply to Feeney Xiao

Prodigy 70 points

Okay understood, but can you please correct the datashet then, because it is wrong and leads to issues!

0 Feeney Xiao over 1 year ago in reply to Guenter Goldbach

TI__Intellectual 2110 points

Hi Guenter

Thank you for your carefully check, we will update the datasheet.

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TPA3223: Filtering of GVDD and AVDD