BQ24715: Schematic Review

The customer is using BQ24715 to charge two cells battery. 20V input voltage/2A.

But the temperature increase is larger than 50℃ of this chip. 

What is the potential reason? It seems there is no place in the cheap which could consume so much power.

Hello Fabio,

Can you confirm that you followed the BQ24715 PCB layout guidelines:

Best Regards,

Christian.

The customer have revised their layout from two layer to four layer.

Could you help to review the layout and give some improvements suggestions?

Thanks

HT-PCB-1321-B2310A-PC-V04.PcbDoc

Hello Fabio,

Please allow me time to review the PCB layout. I will provide an update with my feedback by EOD Thursday.

Best Regards,

Christian.

HT-PCB-1321-B2310A-PC-V03.PcbDoc

Hi Christian, the V04 is the four layer layout. The newer one V03 is the two layer layout.

The end customer said four layers is too expensive.

They still want to improve the layout in their original two layers.

Could you help to review the V03 version?

This project is a bit urgent. Can you help me take a look？

Hello Fabio,

Yes, I will review the V03 layout version. I will provide an update after I gather more information.

Best Regards,

Christian.