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BQ28Z610EVM-532: BQ28Z610EVM-532 can't work

Part Number: BQ28Z610EVM-532

Dear TI

Please help  BQ28Z610EVM-532 work fail,

the Demo's HW config is default,voltage between 1P and 1N is 4V,voltage between 2P and 1P is 4V too,but the Vpack is 0V,the CHG NMOS and  the DSG NMOS are not open ,and the I2C cann't communication