Electrostatic discharge protection circuit

Abstract

The embodiment of the invention provides an electrostatic discharge protection circuit. The electrostatic discharge protection circuit comprises a first power supply, a second power supply, a first electrostatic discharge protection device, a second electrostatic discharge protection device, a first ground electrically connected with the first power supply, and a second ground electrically connected with the second power supply, the first power supply and the second power supply are mutually independent, the first ground and the second ground are electrically connected through the first electrostatic discharge protection device, and the first ground and the second power supply are electrically connected through the second electrostatic discharge protection device. Therefore, the first electrostatic discharge protection device and the second electrostatic discharge protection device are added to first improve the ESD performance, the electrostatic discharge protection devices are manufactured according to the existing process, the size is not adjusted, only the device is increased, the area of an integrated circuit is increased, the cost increase can be ignored, and the cost of the integrated circuit is effectively saved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of integrated circuits, in particular to an electrostatic discharge protection circuit. Background technique [0002] Static electricity has the characteristics of long-term accumulation, high voltage, low power, low current and short action time. The static electricity generated in the integrated circuit can form a large current of more than tens of amperes in a short period of time. Such a large current flows directly through the electronic device with a conduction current of only microampere or milliampere level, which will cause serious damage to the integrated circuit. Electronic devices in the circuit bring destructive consequences, which is also one of the main reasons for the failure of electronic devices in integrated circuits. Since then, ESD (Electro Static Discharge, electrostatic discharge) protection circuits have emerged. The design purpose of the ESD protection circuit ...

AI Technical Summary

Problems solved by technology

Due to the need to increase the size of electronic devices, the area of ​​the integrated circuit increases, which increases the cost of the integrated circuit, or due to the use of ESD-Implant technology to improve the ESD performance of the integrated circuit, additional manufacturing processes need to be added, which increases the cost of the integrated circuit

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