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NFC PN5180 DPC in Card Emulation Mode

Question asked by EMMANUEL SANCHEZ on Aug 20, 2019
Latest reply on Sep 16, 2019 by EMMANUEL SANCHEZ

I'm having an issue where the RF field gets really weak on my NFC antenna after I use a phone to read it once or twice.

I am using the PN5180 in card emulation mode. Does the PN5180 use the DPC in card emulation mode??


I am unable to calibrate the DPC because my measurement of the current ITVDD it is always 0mA,

and I think it's because I'm using the PN5180 in card emulation mode.


I'm not sure if my problem is with the DPC or with the hardware on my custom board.


For testing purposes, I tried reducing the gears in the DPC to 1, as described below, but it did not fix my issue.



This is related to the problem described here:

NFC PN5180 Antenna Sensitivity Problem 



Any ideas?


Thank you