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DRV8874-Q1: Motor surge to VM line

Part Number: DRV8874-Q1


Is the VM line affected by motor surge from the motor connected to the OUT1 and OUT2 terminals?
If so please tell me what to do.

No.2(Related to question No.1)

Could you tell me the CBulk capacitance value of the VM line in the "typical application circuit diagram" described in the data sheet and the reason for setting it?
(Is this CBulk set to motor surge protection?)

No.3Related to question No.2)

Also, if countermeasures are necessary, in addition to setting CBulk, is it necessary to protect the Zener diode?