DRV8302: GVDD output is abnormal

Part Number: DRV8302

Hi Team,

When an external 9v power supply is connected, the GVDD output is only about 6v.

When an external 20v power supply is connected, the GVDD output further drops to 2v.

The output of AVDD and DVDD is normal. But GVDD output is abnormal.

3.3V in the upper left corner is a design error, en_buck has been grounded.

Thanks,

Annie