How to change the PNEV7462B V2.2 board to 3.3V TXLDO

[gokulkrishna]

I was working with the NFC card reader(door access project) on the Eval board. To change the board configuration to 3.3V TXLDO--is it meagerly changing the JP5 header from 5V to 3V3--or is there any additional resistor arrangement change.

urgent pn7462au high_priority  #help   

[IvanRuiz]

Hello,

Please see response from expert below:

"In UM10883 board quick start guide in section 3.1.3 the TXLDO settings are described. by default the TVDD_IN is fixed to 5V to change this the  Resistor R40 needs to be removed and TVDD_IN must be set to VBUS(R190) or 3V3(R159)

with this change you set your TXLDO to 3V3 or to the VBUS voltage."

Regards,

Ivan.