DRV8300: Power supply current of DR8300

Dear Sir,

We are developping BLDC motor control with DRV8300, this gate driver is powered by 12Volts power rail. The question rising is how we can calculate max curent needed by DRV8300 on this 12 volts power supply ?

We need to determine the size of the LDO (or DCDC) to power DRV8300.

Thanks 

Regards