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How to provide ESD protection for electronic system?

In order to provide ESD protection for electronic systems , you can start from a different perspective . A method in the semiconductor -chip ESD protection architecture . However , the increasingly narrow CMOS chips has become increasingly insufficient to withstand 2KV grade conducted an internal area of ESD protection needed . ESD protection is truly effective not being fully integrated into the CMOS chip !

Secondly , you can work hard in the physical circuit design , more sensitive circuit elements should be kept away from the through holes or seams , if possible , the cable should be grounded connector signal pins in contact before the system is connected to the system grounded this way , a discharge event occurring on the cable does not interfere or disrupt comparison .

Furthermore, the software can be designed to contribute to the ESD , the sensors connected to the system more susceptible to the impact of ESD , resulting in locked condition of the interface circuit , and can sense the software locked measurement can then be used to reset the conditions of the interface circuit and without access to the operating personnel . However, there is always the point of the circuit is more sensitive , but also difficult to isolate the outside .

Therefore, the most effective method is to use a protective element representing the current away from the sensitive components . ESD protection element is placed in the connector or port of the electronic system , so that the current flowing through the protection element so that the current flowing through the protection element without passing through the sensitive element , in order to maintain a low voltage sensitive element to from ESD stress into effective control of ESD events occur . Qualified ESD element must have low leakage and low capacitance and stress in the multi function does not decrease , so as not to reduce the function of the circuit.


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