Hi Christoph,
You probably already did this, but step input decreasing meant halfing the step input frequency for full step mode.
In the images above, it appears the current approaches 5A in the unzoomed image and 4A in the zoomed image.
Separating the supply of the H bridge and the driver can result in overcurrent events. If the H bridge supply droops and the driver supply does not, the OCP monitor (DRV8711 VM - XOUTn) could interpret that as an overcurrent.
You probably already did this, but step input decreasing meant halfing the step input frequency for full step mode.
In the images above, it appears the current approaches 5A in the unzoomed image and 4A in the zoomed image.
Separating the supply of the H bridge and the driver can result in overcurrent events. If the H bridge supply droops and the driver supply does not, the OCP monitor (DRV8711 VM - XOUTn) could interpret that as an overcurrent.