DRV8825: The current of 24V power supply is 0.04A occasionally，which is always about 0.13A .

Part Number:DRV8825

I  drive the motor to rotate a  half-circle.

When the motor is running , I set the chopping current to 1.33A,

When the motor stops,   I set the chopping current to 0.24A, and in  most case, the supply current of 24V  is about 0.13A when the motor stops.

But in some cases , the supply current of 24V  is about 0.04A when the motor stops.and the motor can be rotated manually wiith few resistance.

what's  the reason ?

Then  I  try  the fast decay mode  :  when the motor stops.,the supply current of 24V   is also about 0.04A  and the motor can also  be rotated manually wiith few resistance.

So I  guess maybe the current decreased  to 0 during chopping.   Would the situation I decribed happen?

So,  I  plan to  incease the chopping current when the motor stops, or  I  want to  try to increase the value of C11. Here  is my schematic:(some value is not the same as what I use to test.)