topic Re: NXP IC Pcb design guid in NFC

NXP IC Pcb design guid

jungho — Fri, 22 Nov 2024 01:14:55 GMT

Hello.

I am a PCB designer

Where should I request an accurate layout guide or reference for NXP IC PCB design?

Specifically, do you provide specifications or layout design guides for inductor placement among the components configured in the TX RX transmission and reception signals?

For example

IC and TX RX inductor arrays are horizontal or vertical or

A recommended guide to the separation distance between the transmitted and received signals.

I'd appreciate your help.

Please reply by e-mail

Thank you.

Re: NXP IC Pcb design guid

KaiLi — Mon, 25 Nov 2024 04:46:33 GMT

Hello @jungho

Unfortunately, NXP does not have a specific documentation to explain and describe this. For NFC products, we have some reminders and suggestions for the design of the antenna part for developers to refer to, such as:
The connection between the Tx output pins (Tx1 and Tx2) and the EMC low pass filter has to be as short as possible. The GND connection especially between TVSS and capacitors of EMC Filter network must be as short as possible. The multi-layer board layout is using the middle layer as GND plane, so TVSS and the capacitors are shortly connected to GND. In case of a two-layer design the GND plane should be done properly.
The connection between the block capacitors and the VDD pins need to be as short as possible. This holds especially for the TVDD and its block capacitor.
Differential wiring is needed as can as possible, especifial for TX/RX.

Hope it helps.

Re: NXP IC Pcb design guid

Tomas_Parizek — Mon, 02 Dec 2024 11:09:11 GMT

Hello jungho,

We typically give a layout recommendations in "Hardware Design Guides" or "Design-in recommendations" documents for each product.

See some examples below:

PN7160 -> https://www.nxp.com/docs/en/application-note/AN12988.pdf

PN5190 -> https://www.nxp.com/docs/en/application-note/AN12551.pdf

For each product, we also offer an evaluation board + design files:

The evaluation board also works as kind of "reference design". So can have a look into the files and use it as a reference.

Please let me know whether you have more questions !

Tomas