BQ4050: Fuel gauge that can work with BQ25700A/ BQ25710 w/o host controller.

Prajith Cheerakkoda

Part Number: BQ4050
Other Parts Discussed in Thread: BQ25700A, BQ25710, BQ40Z50,

Hi Team,

I'm looking for a Fuel Gauge that can work (independently w/o host controller) over SMBus with battery charger BQ25700A/ BQ25710. My intention is to design a smart charger without Host controller.

Thanks
Prajith

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

Hi Prajith,

I assume you are working on a multi-cell application. BQ40z50 is a flash gauge and supports SMBus and it can work alone without a host controller.

Andy

0 Prajith Cheerakkoda over 5 years ago in reply to Andy Liu (BMS)

TI__Expert 8670 points

Hi Andy,

Thanks for your reply. I noticed that the part mentioned in your reply is BQ40z50, but my query was on BQ4050. Any specific reason? as per my understanding both of them are capable for SMBus master operation.

Yes, battery configuration is 3s. May i know whether we have tested BQ40z50 with BQ25700A/ BQ25710?

One more question, Is BQ4050 capable of multi-master operation?

Thanks
Prajith

0 Andy Liu (BMS) over 5 years ago in reply to Prajith Cheerakkoda

TI__Guru 52115 points

Hi Prajith,

Ses my comments below.

a) BQ40z50 and BQ4050 are using different algorithms. If you are looking for accurate SoC readings, BQ40z50 is better.

b) I have seen other customers use bq40z50 with bq25710 before.

c) It should be. I would suggest you get an EVM and double check.

Andy

0 Prajith Cheerakkoda over 5 years ago in reply to Andy Liu (BMS)

TI__Expert 8670 points

Hi Andy,

Thanks for your reply.

Regards

Prajith

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BQ4050: Fuel gauge that can work with BQ25700A/ BQ25710 w/o host controller.