MCF8329EVM: OCP_VDS_FAULT

Tool/software:

Hi, we are developing a medical device using a 24V BLDC motor (R=0,15ohm; L=0,12mH), peak current 10A. We managed to spin it with the EVM board and MPET without any load. The moment we applied a load appeared DRIVER_FAULT message.

Next step, as the peak current is 10A we have changed Rsense on the board to 0.004ohm, and set BASE_CURRENT=0x100. Now we are not able to spin the motor even without load, DRIVER_FAULT and OCP_VDS_FAULT message appears.

What might be the problem? CSA_GAIN=40, SEL_VDS_LVL=2.0V

thanks.