AMC1301: how to connect ESD TVS to input pin?

Yuan Tan63

Expert 3280 points

Part Number: AMC1301

Hi,

Customer need 8kV contact discharge, 15kV air-gap discharge. So they need to add TVS to AMC1301's input pin.

The question is where should connect the negative pin of TVS? the GND1 or the rack?

thank you!

Best regards,

Yuan

over 3 years ago

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi Yuan,

I would connect it to GND1.

Kai

0 Alexander Smith over 3 years ago in reply to kai klaas69

TI__Mastermind 47565 points

HI Yuan,

I agree with Kai - thank you!

Connecting to GND1 will ensure that the device input is protected with respect to it's GND potential. The rack could be a different potential with respect to the device ground which could lead to common-mode issues.

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AMC1301: how to connect ESD TVS to input pin?