I can't make PN7150 recognize card 2cm or more(between PN7150 and card).

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I can't make PN7150 recognize card 2cm or more(between PN7150 and card).

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馬場重人
Contributor I

I can't make PN7150 recognize card 2cm or more(between PN7150 and card).

I'm sorry my poor English. I'm Japanese.

2cm or less OK. but 2cm or more is NG.

Why I Can't?

If I need adjust settings, please teach me.

(RX_GAIN? or something else?)

Best regard.

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1 Solution
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weidong_sun
NXP TechSupport
NXP TechSupport

Hello 馬場 重人,

   Generally speaking, the effective range is 1cm~3cm when NFC reader reading a Tag, so I feel 2cm should be OK.

In additon, probably using LDO should be better than DC-DC converter.


Have a great day,
TIC  weidong

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Jonathan_Iglesias
NXP TechSupport
NXP TechSupport

Dear 馬場 重人,

hope you are doing great, I would like to know if you are using our evaluation board or if you are using your custome  board.

BR

Jonathan

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馬場重人
Contributor I

Mr. Jonathan Iglesias

Thank you for your reply.

I have used PN7150 SBC KIT FOR RASPBERRY PI OM5578/PN7150RPI.

I had used DC-DC converter for 3.3V power, It is not good.

But I changed form DC-DC converter to low dropout voltage regulator for 3.3V, It is good.

DC-DC converter:TI TPS54331
low dropout voltage regulator:JRC NJM2830


Is Low dropout voltage regulator better than DC-DC converter to supply PN7150?


Best regard.

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862 Views
weidong_sun
NXP TechSupport
NXP TechSupport

Hello 馬場 重人,

   Generally speaking, the effective range is 1cm~3cm when NFC reader reading a Tag, so I feel 2cm should be OK.

In additon, probably using LDO should be better than DC-DC converter.


Have a great day,
TIC  weidong

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

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861 Views
馬場重人
Contributor I

Mr. Wigros Sun

Thank you for your reply.
I will use that as reference from now on.

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