About Aplemay

Aplemay · 2023-04-20

my application is NFC readers (ST25R3920B) polls whether there is an approaching card. Qi wireless charger searching devices with analog/digital ping, and start Qi wireless charging if WC device is found.I found the chips (ST25R3920B) is always broke...

Aplemay · 2023-04-21

Hi Ulysses,the board intergrates Qi charger part and NFC reader part together. The coils/antenna used are independent. NFC antenna is PCB antenna. As the project is in the functional realization at present, antenna has not been matched. Matching comp...

Aplemay · 2023-04-20

Aplemay · 2023-04-20

Hi Ulysses,something more. not only NFC chip is broken, mcu is broken as well. it can be repeatable. After both ST25R3920B and mcu are replaced new chips, the system works again. MCU and nfc reader shares same 3.3v supply. I measured forward/reverse ...

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How to protect NFC readers chip (ST25R3920B) when co-working with Qi wireless charger?

Re: How to protect NFC readers chip (ST25R3920B) when co-working with Qi wireless charger?

Re: How to protect NFC readers chip (ST25R3920B) when co-working with Qi wireless charger?

Re: How to protect NFC readers chip (ST25R3920B) when co-working with Qi wireless charger?