8824 Hi
I'm testing a DRV8824 driver with a picaxe mcu, checked the fault pin, and its at 1.1V. i'm assuming that its shut down due to a fault. could you help with identifying what the fault could be
some details of my application are below
sense resistors - 1ohm (tried 0.7ohm to 2 ohm)
stepper motor - 4 wire bipolar . coil resistance 7.5ohm (could this be an issue? tried with one with coil resistance of 2ohm as well)
VMA and VMB - 18 V
AVREF, BVREF - 3.3V
decay - fast (tried slow)
circuit is as per datasheet with recommended values for components.
pcb is self designed and etched. checked for shorts.
am getting 3.3v at v3pout. will this be output if it is in fault mode?
no heating of the driver.