How can the service life of the isolator exceed 40 years?

In the field of analog chips, compared with domestic and foreign giants, the advantages of domestic manufacturers are not only low price and technical services, but also the improvement of product performance and value brought by innovation.

1. Analog chip innovation.

The innovation of analog chip includes three aspects: technology, supply chain and function.

Technological innovation usually includes principle technological innovation, such as signals and sensors.

And supply chain innovation. At present, the whole chip supply is tight and out of stock, and the analog small chip of Sichuan Tuwei is also out of stock. Therefore, Sichuan Tuwei is also planning its production capacity with the maximum value concept of a single wafer. Perhaps most semiconductor companies are now doing it in this mode with this kind of thinking.

Finally, functional innovation, which is closer to the needs of domestic system manufacturers, is also one of the most important innovations of Sichuan Tuwei.

The first innovation mode is to improve the integration of analog chips, which not only replaces the standard equipment used in the current system, but also, on this basis, considering whether the system scheme has more opportunities, it can solve the problem of improving the integration and reliability of the whole machine in the system, rather than completely replacing the original position.

2. Digital isolation product matrix

Isolation devices include standard digital isolation devices, which will be extended to isolation interfaces, as well as isolation power supply, isolation amplification, isolation drive, etc. all these products can be widely used in industrial and automotive applications. For example, with the iteration of technology, the standard digital isolation device mainly completely replaces the optocoupler isolation device. Starting from the standard optocoupler isolator,isolator The main purpose of is to improve the reliability of the interface. Therefore, with the isolation interface, the isolator and interface are fully integrated into one chip, which can solve the higher integration and reliability of customers in the system application.

In addition to the interface, the power supply needs to be isolated. This is the evolution of technology. It was originally an optical coupler, but now it is isolated by a capacitor. The maximum speed of the traditional optocoupler is 1Mbps, while the current isolator can support 150Mbps and is compatible with the transmission mode of high efficiency and ultra-low power consumption.

that isolator How does your life span exceed 40 years?

isolator It is very different from other products. Among them, silica is used as the isolation grid. Its maximum withstand voltage is 1500 volts and its withstand voltage life is more than 40 years. How to ensure it?

It can be modeled by reliability test and theoretical model. It is impossible to work for 40 years under 1500 volts, so the standard model is usually used to simulate the service life under high field effect, and its service life in practical application environment is analyzed by extension. Then, after distribution under high field effect, describe how long its service life will be with the weakening of electric field.