In the electrical system, the operation of the equipment inevitably produces electromagnetic interference (EMI), which spreads through the power cord and signal line, affecting the signal quality, causing data transmission errors and signal distortion. To reduce these effects, engineers employ a variety of measures, including using isolation chips for signal isolation, using filters to reduce electrical noise, ensuring good grounding, and using regulated power supplies. Isolators They not only improve the safety of the system, but also reduce noise interference, and realize the effective matching of different level circuits. In simple terms, the isolation chip can ensure the stable operation of the system under high voltage and electromagnetic interference.

Isolation chips play a crucial role in the electrical system, by realizing the safe isolation between different circuit domains, effectively prevent the impact of high voltage, noise, surge, etc., on low voltage or sensitive circuits, and ensure the effective transmission of signals. In electrical systems, the use of isolation chips not only improves the safety of the system, but also ensures the stability and reliability of signal transmission.
 

The development of isolation technology

Early isolation technologies relied mainly on transformer coupling and optocouplers, which used electromagnetic induction and the photoelectric effect to achieve non-contact transmission of signals. However, with the development of technology, digital isolators began to be widely used in the 1990s, and their high-speed optocouplers and magnetic coupling technologies based on CMOS processes improved data transmission speed and reliability, while reducing power consumption.

Innovation in modern isolation chips

With the continuous progress of technology, modern isolation chips have been developed in the direction of highly integrated and multi-functional. For example, digital isolators based on magnetic isolation technology developed by Analog Devices solve some of the inherent problems of optical couplers, such as aging, slow response, and large temperature drift. Capacitive isolation technology has attracted the attention of the industry for its lower power consumption, faster speed and higher integration.

Development of domestic energy storage isolation chip

Domestic enterprises have also made remarkable achievements in the field of energy storage isolation chips. For example, Nanochip's NSi8100 isolation interface chip provides high isolation voltage resistance, high common mode immunity, and high integration. The fully isolated CAN transceiver SM1500 of Zhiyuan Electronics integrates CAN transceiver circuit, power isolation, signal isolation, which is suitable for automotive electronics, industrial control and other fields.

Market trends and popular models

According to the latest market analysis, the market size of digital isolation chips is expected to continue to grow in 2024, especially in the fields of industrial automation, automotive electronics, information communication and power automation, and other applications demand increased significantly. TI (Texas Instruments), as an industry leader, offers a variety of digital isolators, including the ISO78xx series of 5.7kVrms enhanced digital isolators and ISO67xx, ISO77xx series of 5kVrms digital isolators, which are characterized by their superior isolation performance and high-speed data transmission capabilities. To meet the diversified needs of the market.

Conclusion

Isolator chip as an indispensable part of the electronic system, with the continuous innovation of technology, the isolator chip is developing in the direction of higher speed, more intelligent and more secure, in order to meet the requirements of modern electronic systems for safe, reliable and efficient data transmission. With the rapid development of the Internet of Things, new energy, smart grid and other fields, the application prospects of isolation chips will be broader. In 2024, the digital isolator chip market is expected to continue to grow, especially in the industrial and automotive electronics sectors.