Part Number: DRV8305
Hello TI Team,
I am trying to develop a motor driver with the TI DRV8305NPHPR 3-phase motor driver. Additionally I am using a TI Hercules microcontroller to command it and program its registers via SPI. At the moment I do not have a motor connected however I am getting a fault indicated on by the low nFAULT pin (I have it pulled up to 3.3V via 10k resistor). See below attached schematic.
I am able to confirm EN_GATE and INHB is 3.3V.
The next logic step I took was to try to read the fault registers via SPI.
Warning_Watchdog_Reset (Adddress=0x1)-> Response 0x0000
OV_VDS (Address=0x2)->Response 0xFFFF
IC_Fault (Address=0x3)->Response 0xFFFF
VGS_Fault (Address=0x4)->Response 0xFFFF
This issue is common in all the boards I have. Therefore it must be a hardware or SW initialization issue. Do you have any recommendations on what could be causing this issue?
