Other Parts Discussed in Thread: DRV8308
I am using the DRV8308EVM to test out the DRV8308 IC for a BLDC motor driving application. I have burned my desired register values in to the OTP memory using the GUI and am now controlling the IC directly with with my Arduino Mega using the exposed SPI pins. I am able to read out the values of each register and they match what I have burned into the OTP memory, confirming my SPI connection to the IC.
My issue is that when I toggle the enable pin ACTIVE from my Arduino, my motor only briefly turns before stopping. However, when the USB is plugged in or I apply 5V directly to the USB5V test point the motor behaves exactly how I expect it to.
I have had no luck looking through the DRV8308EVM user guide for a schematic of what this USB5V is supplying, is there some setting or jumper I am missing that will supply this 5V internally?