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　　ADI’s innovative power technology helps expand Industry 4.0 and 5G applications

　　As a common product, power supply can be seen everywhere in our lives. As the core technology, power supply technology has gradually developed into a It is a multi-disciplinary and interpenetrating comprehensive technology that provides high-quality, high-efficiency, and highly-reliable power supplies for communications, electronic instruments, industrial automation, power engineering and other fields, and plays an irreplaceable role in economic development.

　　The development of the Internet of Things, 5G, and artificial intelligence technology has put forward higher requirements for power supply technology. High integration, high stability, and high efficiency have become new demands in the market. As the world's leading innovative enterprise in power supply technology, ADI's power supply technology Everywhere. On October 30, 2018, Analog Devices successfully held Power by Linear’s power product and technology media meeting at the Magnolia Hall of the Four Seasons Hotel Shenzhen. Liang Zaixin, Director of Power System Engineering of ADI, discussed with many industry insiders how ADI’s leading innovative power technology can be used in industry , automotive, communications, energy/energy harvesting and other fields.

　　Liang Zaixin, director of power systems engineering at Analog Devices

　　ADI: Leader in innovative power technology

　　In order to strengthen power supply technology innovation and integrate industry resources, ADI and LINEAR officially completed their merger in March 2017. Together, they will achieve greater breakthroughs and innovations in the power supply product line, while building the new company into a high-performance, first-class company in the industry. of analog technology companies. Liang Zaixin, director of power system engineering at ADI, said that ADI's style is to be an innovative technology leader. This is a question that the two companies considered before the merger, and it is also the company's positioning. Eighty percent of the markets of ADI and LINEAR are in industry, communications and automobiles. At the time of the merger, ADI had 20,000 devices and LINEAR had 23,000 devices. After the merger, there were 43,000 devices, including more than 10,000 power devices. Because LINEAR's power products are powerful enough, we have retained some LINEAR elements and the new sub-brand is called Power by Linear. Among the more than 10,000 power supply devices, most are inherited from LINEAR. The original ADI power supplies accounted for about 10%.

　　In terms of ADI's strategic layout, the power supply part has been greatly supplemented and strengthened due to the acquisition of LINEAR, making ADI's power supply rank second in the world. This is an acquisition and integration we made in order to cope with future market competition and enhance our own strength. He also mentioned that ADI has discovered some technological trends from China to the world. Taking autonomous driving and automotive electronics as examples, the automotive industry is entering an era of change, transitioning from fuel vehicles, hybrids to pure electric vehicles, 5G , Industry 4.0, VR and other fields will bring us many opportunities and challenges.

　　How to better present PowerbyLinear's more than 10,000 devices to customers is what ADI has been doing. "We design products mainly around three directions. One is to reduce the size and volume of the chip; the other is to improve the efficiency of power supply technology; and the third is to pay attention to EMI R&D and design." Liang Zaixin said.

　　ADI power technology solves industrial EMI and interference challenges

　　With the acceleration of global industrial upgrading, industrial automation, driverless driving, 5G, energy and other industries will usher in huge explosions and growth, and power supply technology will also have great potential. Industry 4.0 is an important part of intelligent manufacturing and is of great strategic significance to our country. Liang Zaixin believes that Industry 4.0 needs to consider many factors such as flexibility, high efficiency, interconnection, safety, and reliability. These industrial situations are inseparable from the support of power supply technology. The high efficiency, small size, and EMI characteristics of PowerbyLinear products can help. The development of Industry 4.0.

　　According to relevant data, China's investment in semiconductor-related equipment increased significantly in 2018 and 2019. It can be seen that the Chinese government has great support for the domestic semiconductor industry. From a global perspective, China has the largest growth rate. . Semiconductors are a basic industry, and ADI products can fully support the development of China's industries. Not only traditional ADI signal chain and other devices, but also power supplies are needed in all semiconductor production, testing, and packaging processes. ADI's PowerModule has a very complete product sequence. It can provide good support to semiconductor equipment manufacturers and assist them in completing their designs. Small size and high efficiency products help products support more devices in a small space.

　　In order to solve the EMI and interference problems of power supply products, ADI's innovative SilentSwitcher technology has made new breakthroughs in chip design. Because ordinary power supplies have a single current loop, ADI's SilentSwitcher chip has two reverse current loops. The chip's own EMI level It can be made very low, and it can even meet the standard without special optimization. After continuous iteration, optimization and upgrade, it is technically far ahead of its opponents.

　　ADI’s low-noise power supply products support the development of autonomous driving

　　The prospect of autonomous driving is very broad and there is a lot of room for imagination, but for autonomous driving, safety is crucial. Liang Zaixin said that ADI has more than 25 years of history in the field of airbags and is a safety expert in the field of automation and autonomous driving. Autonomous driving requires many special lasers, microwaves, and body measurement systems. PowerbyLinear products are widely used in automobiles, and are used in popular fields such as Lidar, Radar, IMU, ECU, 48-volt systems, and LEDs. He mentioned that ADI power products have very low noise and very high PSRR values. In 2016, ADI released the industry's lowest noise LT3045, which has less noise than traditional lithium batteries. When these power products power Lidar, Radar, etc. It can significantly improve performance, greatly reduce the noise of the entire system, and make the vehicle passengers safer. In the industrial field, ADI uses SilentSwitcher, and the same is true in automobiles. When ADI showed SilentSwitcher in front of Tier 1 and car manufacturers in the automobile industry, everyone recognized it, because this may be something that must be considered in the power supply in the future automobile field. direction, it greatly reduces the external radiation and interference of the product, making the body system more stable. In addition to SilentSwitcher, ADI is also considering some different things, such as PowerOverDataLine. Ethernet is a hot spot in future cars. Through innovative solutions like ADI A2B, C2B, etc., power supply through data lines can save a lot of cable construction and weight, and improve power supply. Reliability, reducing construction difficulty and saving the cost of the entire vehicle.

　　For LED car headlights, which have been very popular in recent years, ADI has also made many innovations in power supply technology, and its products have done better in car energy optimization and safety. For example, the Audi A8 matrix headlights are composed of many LED units. When the two cars meet, Using the body camera to determine the position of the oncoming vehicle, the system automatically turns off some lights on the side of the oncoming vehicle, making the vehicle safer and more user-friendly. A good electric vehicle battery management system helps the car drive safely for longer distances and times. PowerbyLinear's BMS products, such as the LTC680X series, are very popular in China and once accounted for more than 80% of the market share. In addition to the 48-volt system, the engine of a traditional fuel vehicle also has a great opportunity to convert power generation into direct current to power the battery. In the past, diodes were used as rectifier bridges, but traditional diodes have a voltage difference. The greater the current, the voltage difference is not good. , there is a difference of about 0.4 volts to 0.7 volts, which is a huge power loss. ADI has made an ideal diode bridge stack, using MOS tubes instead of diodes. One is that the impedance of MOS tubes is very low, which can improve efficiency and reduce power loss. The bridge stack does not require a radiator, and has better reliability and efficiency. This can save energy in the car. At the same time, it improves operational efficiency.

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