BQ27542-G1: Schematic review

Hello Mehmet,

For the temperature sense (TS) I would double check your connections with the EVM schematic, I believe you are missing a filter capacitor and some connections.

I am not familiar with the protection chip you are using, I would also recommend checking with the EVM schematic and if you are still unsure submit another post for the protection chip as the part number.

EVM schematic:

https://www.ti.com/lit/ug/sluub79/sluub79.pdf?ts=1594755577795&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ27542-G1

Sincerely,

Wyatt Keller

Hello Wyatt,

I draw using the document in the link that you shared completely.

I even have the board I have drawn according to this document and use it. now i am trying to combine some of my designs into one board.

I consciously tied the ts pin to ground. Another post wrote that if we do not use the TS pin, we should connect it to ground with 10k.

https://e2e.ti.com/support/power-management/f/196/t/844569?BQ27542-G1-BQ27542-Related-Query

- I did something like this to use Charger's(BQ25895) TS pin. Would it be a problem if the TS pin remains like this after this explanation?

I will create a separate post for the protection chip.

Regards,

Mehmet