BQ34Z100-R2: Schematic review

Muki

Prodigy 210 points

Part Number: BQ34Z100-R2
Other Parts Discussed in Thread: PMP23329, LMR38020, BQ76952

Tool/software:

Hi Guys,

I'm attaching a schematic based on PMP23329

The 3.3V is to be provided by a LMR38020

This gas gauge is to be used on a 16S pack with bq76952 + MSP430. Let me know if any other changes are recommended

Thanks & Regards,

Muki

3 months ago

+1 Alan Frias 3 months ago

TI__Mastermind 25225 points

Hello Muki,

Below I've attached some mark up on your schematics below, green means it was good and blue means you should look into. I've attached the EVM to better help compare with your schematics.

EVM:
https://www.ti.com/lit/ds/symlink/bq34z100-r2.pdf?ts=1747250921119&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FBQ34Z100-R2

Thank you,
Alan

0 Muki 3 months ago in reply to Alan Frias

Prodigy 210 points

Hi Alan,

Thank you for the quick and detailed reply

I've made the following changes addressing the blue marks :

1. A 0.3mOhm sense resistor is present in the full schematic

2. C39 is present is the PMP23329 schematic - should i remove it (or) change it to 100V ?

3. GND flag is added to CE + REGIN components

Thanks & Regards,
Muki

+1 Alan Frias 3 months ago in reply to Muki

TI__Mastermind 25225 points

Hello Muki,

Muki said:
1. A 0.3mOhm sense resistor is present in the full schematic

-That works within the scheamtisc

Muki said:
2. C39 is present is the PMP23329 schematic - should i remove it (or) change it to 100V ?

-Sorry for the confusion but If you are following this schematic than you are good, typically we don't add a capacitor for the EVM's but this is good

Muki said:
3. GND flag is added to CE + REGIN components

-Following this schematic means this is good

Thank you,
Alan

Power management

Power management forum

BQ34Z100-R2: Schematic review