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BQ76907: Behavior if PACK connected reverse

Part Number: BQ76907

Tool/software:

Hello Expert 

I was just checking if I need any reverse polarity protection for PACK? 

In my understanding if reverse voltage is applied pack for charging MOSFET won't turn ON as AFE doesn't have supply due to BAT pin diode reverse bias.

Should I add reverse polarity protection?

TVS Diode across pack can work as protection?

Please let me know thoughts.