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BQ25672: BQ25672 internal FET

Part Number: BQ25672

Hello team,

If Vbat is set to 16.8V, will SW2 voltage be 16.8V? If yes, how can we expect voltage drop at SYS pin and BAT pin?

Also, when Buck mode, is Q4 always ON or does current bypass body diode? If Q4 is ON, Vsys becomes 16.8V - (17mΩ(Q4) + 11mΩ(BATFET)) *  2A(Ibat). Is this right?

 

Best Regards,

Austin