DRV8412: Any potential power saving could be made in reducing Vdd below 10.85v and if so to what value?

Tool/software:

e2e, 

I seem to have observed a higher current through the Vdd vs. what is published in the datasheet [10.5mA at 400KHz 50% duty]. I measured an RMS current of 68mA driving a load at 300KHz with a 25% duty cycle . The figure below is the current measured into Vdd through a current probe. Also, I noticed that Vdd min is 10.8v but per the diagram Vdd only supplies power to a 3.3v LDO. I wanted to check if any potential power saving could be made in reducing Vdd below 10.85v and if so to what value.

Thank you,

Adam