BQ77915:Bq77195, bq24600, bq34z100??

Thang Tran Minh

Prodigy 20 points

Part Number: BQ77915
Other Parts Discussed in Thread: BQ34Z100, BQ24600, BQ34Z100-G1

Hello. I have some problem.

My system use 2s2p or 5s1p. Can I combine use bq77915 to protect, bq24600 to charge, bq34z100 to fuel gauges??

And: How to know which IC can be used for multi cell in parallel?

over 5 years ago

0 David Hien over 5 years ago

TI__Genius 10830 points

Hi Thang,
BQ77915 is a 3-5s stackable primary protector → will not work for a 2s battery.
Are you looking for a primary protector or a secondary protector? This training video will give you more information on our primary (including BQ77915) & secondary protectors and their main differences.
BQ34z100-G1 is what we call a top of stack gauge: it considers a 2s or 5s battery as if it was 1 cell. BQ34z100-G1 is a solid gauge you can use in many applications.
Another option is to look at a gauge with integrated protector: you can look at BQ28z610 for a 2s battery or BQ40z80 for a 5s one.

BQ24600 was used in 2s1p reference design (here). I recommend you go to this page for selecting the most adequate charger IC.

0 Thang Tran Minh over 5 years ago in reply to David Hien

Prodigy 20 points

Whether I can use bq77915 for 5s3p bacause i don't see them mentioned in datasheet??

0 David Hien over 5 years ago in reply to Thang Tran Minh

TI__Genius 10830 points

Hi Thang,
You can. 5s3p is the same as 5s1p, 5s2p... for BQ77915 as it focuses on the cells in series.

Power management

Power management forum

BQ77915:Bq77195, bq24600, bq34z100??