Electrostatic discharge protection TVS device of high maintenance voltage

Abstract

The invention discloses an electrostatic discharge protection TVS device of a high maintenance voltage. The device comprises a single component. The single component comprises a P substrate. A high voltage N trap, a P trap, a first N+ active injection area, a second N+ active injection area, a third N+ active injection area, a first P+ active injection area, a second P+ active injection area, an oxide layer and a polysilicon gate are comprised. The first N+ active injection area is led out through a metal line and is taken as an anode of the single component. The polysilicon gate is connected with the third N+ active injection area and the second P+ active injection area through the metal line, is led out and is taken as a cathode of the single component. The electrostatic discharge protection device of the high maintenance voltage possesses a good electrostatic discharge capacity and possesses the high maintenance voltage. When an integrated circuit works, effective protection can be achieved if an ESD event is generated. A bolt-lock problem is avoided.

Description

technical field [0001] The invention relates to a high sustaining voltage electrostatic discharge protection TVS device, in particular to a high sustaining voltage electrostatic protection unit (TVS) device, which belongs to the technical field of integrated circuit electrostatic protection. Background technique [0002] ESD (Electrostatic Discharge, Electrostatic Discharge) has always been a troublesome problem in the field of integrated circuits. Doing a good job of electrostatic protection for integrated circuits is extremely important to the reliability of an electronic system. Nowadays, electronic devices tend to be miniaturized, high-density, and multi-functional. Especially, applications such as fashion consumer electronics and portable products that have strict requirements on the motherboard area are easily affected by electrostatic discharge. Static electricity exists all the time and everywhere. In the 1960s, with the emergence of MOS devices that are very sensit...

AI Technical Summary

Problems solved by technology

If an ESD event occurs when the high-voltage device is working, the ESD protection device will start to work, but its operating voltage is very low, even far lower than the operating voltage of the high-voltage device, and it will not be able to be turned off after the ESD event. Seriously affect the normal operation of high-voltage devices, and even burn the high-voltage devices

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