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BQ769142: HAVE A QUESTION

Part Number: BQ769142


Tool/software:

Hi,dear.

This is my first time touching the domain of balancing circuit. I have decided to use BQ769142.

But there is a question puzzling me.

CHG and DSG can use a pair of back-to-back NMOS but can use two pairs or more also.  When should I use a pair or two pairs or more? My situation is that 2A charging currents for battery and 40A discharge currents for peripheral. Should I use two or more pairs NMOS?

Thank you!