topic PN5180 overheating in NFC https://community.nxp.com/t5/NFC/PN5180-overheating/m-p/2370416#M14243 <P>We have a custom PN5180 chip due to antenna size restrictions. The problem is that it worked and could read an NTAG, however after some time it stopped working and the chip was very hot.</P><P>I do not know whether the problem is in the wiring. Do we need a copper area below the chip? I attached the schematic and the pcb design (antenna size&nbsp;27.6x27x6mm outer, antenna parameters attached)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot from 2026-05-23 14-29-52.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/386601i80E27B1CBF103063/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot from 2026-05-23 14-29-52.png" alt="Screenshot from 2026-05-23 14-29-52.png" /></span></P> Sat, 23 May 2026 12:33:51 GMT mstf 2026-05-23T12:33:51Z PN5180 overheating https://community.nxp.com/t5/NFC/PN5180-overheating/m-p/2370416#M14243 <P>We have a custom PN5180 chip due to antenna size restrictions. The problem is that it worked and could read an NTAG, however after some time it stopped working and the chip was very hot.</P><P>I do not know whether the problem is in the wiring. Do we need a copper area below the chip? I attached the schematic and the pcb design (antenna size&nbsp;27.6x27x6mm outer, antenna parameters attached)</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot from 2026-05-23 14-29-52.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/386601i80E27B1CBF103063/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot from 2026-05-23 14-29-52.png" alt="Screenshot from 2026-05-23 14-29-52.png" /></span></P> Sat, 23 May 2026 12:33:51 GMT https://community.nxp.com/t5/NFC/PN5180-overheating/m-p/2370416#M14243 mstf 2026-05-23T12:33:51Z Re: PN5180 overheating https://community.nxp.com/t5/NFC/PN5180-overheating/m-p/2372155#M14255 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/263062">@mstf</a>&nbsp;</P> <P>Please follow EVK design to debug your board, specifical for Antenna network.</P> <P>Please check attachment.</P> Thu, 28 May 2026 02:39:51 GMT https://community.nxp.com/t5/NFC/PN5180-overheating/m-p/2372155#M14255 KaiLi 2026-05-28T02:39:51Z