DRV8872: Is the any need for additional ESD or EMI components

Jason Gramse

Part Number: DRV8872

Hi,

We are planning on using the DRV8872 to drive four 24V 2.2A brushed DC motors. Is there any need to place additional ESD protection on OUT1 and OUT2 or ferrite beads? There is a wifi/bluetooth and rf module on the board and I am concerned that the noise from the motor switching will interfere with the antennas.

Jason

over 4 years ago

0 Rick Duncan over 4 years ago

TI__Guru** 114905 points

Hi Jason,

Additional ESD may be needed depending on the product and packaging.

The ESD in the device is intended to protect the device during manufacturing and assembly, but not during operation.

With respect to noise, most brushed motors have a capacitor across the winding to reduce the noise.

0 Jason Gramse over 4 years ago in reply to Rick Duncan

Intellectual 410 points

Okay, thanks for the quick reply Rick

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DRV8872: Is the any need for additional ESD or EMI components