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Noise in a stepper motor with L6472

Question asked by gagliarducci.fabrizi on May 29, 2014
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

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