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BQ40Z80: VCHG AND VDSG TOO LOW TO TURN ON THE N-MOSFET

xuesong DONG
Prodigy 40 points
Part Number: BQ40Z80

In my new design ,the Vchg are too low(14.4V) to turn on the CDS18504Q5A,and Vdsg=0V,So board can't discharge.(Vbat=28.8V)