BQ76930: REGOUT issue

Part Number:BQ76930

Hello sir,

we are working on bq76930 with Bq78350-r1 circuit with the help of Bq76930 EVM reference. We are facing an issue with REGOUT pin from AFE, which give perfect 2.5v output till the power shunt to Bq78350 from AFE. Once the shunt is closed, the 2.5v is dropped to 0.8v. We check the schematics but not sure why the voltage to controller is dropping. Any clue ? 

Thanks,

Akilan G