Question
In AN-960, it is mentioned that the customers could add TVS to increase the transient overvoltage stress protection. One customer from China wouldlike to know how to connect the ground of TVS. Could you please help me to confirm if the TVS on the bus side should be connected to the bus ground,not the ground of microprocessor? The RS485 transciever is ADM2484E.
Answer
Yes, the TVS diodes needs to be connected to the isolated ground.Feedback: NO