Noise in a stepper motor with L6472

Posted on May 29, 2014 at 18:05

Dear Enrico,

I have the same problem of the other customer; I find this problem with two different family of sanyo denki's stepper motor (you can find the datasheet in the attachment): Type 103H7126-0140 and Type 103H7123-0140;  

I tried

 

your suggested configuration but the noise still remain;

I have tryed the configuration suggested in document UM1688 pag.39/43 and the noise still remain; for testing, I'm using the evaluation board of the L6472;

I have recorded a video that show the problem I speak; you can find the video at the following link:

http://www.onetimebox.org/box/ugkLeeD3H2kgrrveg

Do you have some suggestion that can help to solve this problem?

Best regards