I used the two DRV8301 inverter board using the external PWM generation from Auto-Code generation software.
However, the LED6 from schematic will blink when I using open loop voltage control on two motors, so one is regard as a motor, and the other regard as a load. Besides, the Vgs of the MOSFET will turns off for two cycles, which is shown on the pictures. The top one is the measured Vgs from the inverter board, and the bottom one is the given PWM signal from the auto-code generation machine. I didn't use the micro-controller chip from TI. How come I will get the FAULT signal from the TI DSP?
Thanks.
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Shang