Is is possible to add STO functionality to the Powerstep01 by switching the VCC Line?

[CKres.1]

The idea is to switch the VCC Line with a FET to get STO (safe torque off) functionality. Is this possible or can this cause problems (cross current or similar)? In the attachment is an image of the Idea.

[Cristiana SCARAMEL]

Hi @CKres.1​ and welcome to the ST Community.

I suggest to add the FET between VS and VSREG.

In this way you remove the power of the gate drivers (VCC) and allow the device a more robust shutdown sequence thanks to the UVLO protection.

Let me know if this info is useful to you, if yes please "Select as Best" label to close the topic.

[CKres.1]

Okay thanks I'll try that but it'll take some time until we get the PCBs