top of page

BLE AOA/AOD Asset Tag - Wireless charging coil matching


We are developing BLE AOA/AOD Asset Tag.

I will post the wireless charging coil matching work.

Coil matching work may seem complicated, but it is not actually difficult. I think it's a bit of a laborious task.


I used the TI wireless charging IC, BQ51050B_VQFN.





Check specifications

Coil specifications: 26uH, 520m ohm




BQ51050B capacitor calculation method


Important!!

Ls' refers to the series inductance of the receiving coil antenna in an environment where a WPT receiver is placed on a WPT transmitter, and Ls refers to the inductance of the receiving coil antenna in an environment where the WPT transmitter is removed.



Apply the calculated value below





Check charging

I assembled and tested the board using the confirmed C1 and C2 capacitor values.

As per the results, we confirmed that charging is progressing well.



#Wireless charging #Qi #Charging #QI matching #Wireless charging matching #Matching work #LOCATION #RTLS #TAG #BLE #Firmware development #Firmware #Hardware development #Embedded

2 views

Comentários


bottom of page