BQ77915: How to design for maximum 20A charging/discharging current using bq77915

Dilip K

Part Number: BQ77915

I want design 3-5S BMS using bq7791506 for LFP battery of maximum 20A charge current. The user https://www.ti.com/tool/BQ77915EVM-014 is for maximum 4A current. Which components will change when I wish to use the schematic mentioned the user guide?

Thanks.

over 5 years ago

0 Shawn Hinkle over 5 years ago

TI__Expert 7315 points

Hi,

To change the current protection thresholds, you can adjust the sense resistor. For an example on how to make this calculation, please refer to step 10.2.2.1 of the datasheet. Particularly, you will want to follow step 2.

0 Dilip K over 5 years ago in reply to Shawn Hinkle

Prodigy 100 points

Thanks!

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BQ77915: How to design for maximum 20A charging/discharging current using bq77915