Kuwar Dalal

NXQ1TXH5 Compact Charger Design

Discussion created by Kuwar Dalal on Jul 17, 2019
Latest reply on Jul 23, 2019 by G.w. Sun

Hi Guys,

I am currently trying to design a wireless solution for a college project with this chip and would like some feedback before I get the PCB made. I have attached a schematic. 

Some info:

We are using a transmitter coil with the following characteristics:

 

I calculated the Capacitance Cp as dictated by the design assistance manual and the rest is identical to the EVM/application schematic. 

 

Couple of questions, how close do the capacitors C3, C4, C5, C6 need to be to the coil, we have mounted all the components on one side and the coil has touch pads on the other side of the pcb.

 

Does any 10k NTC thermistor work as a thermal sensor?

 

Is it a good idea to add a fuse to the input of the board as an over current protection device?

 

Any further thoughts/comments would be appreciated. 

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