Industrial products and consumer electronics are closely linked, including drones, security monitoring equipment, charging piles for electric vehicles and other equipment have already entered people's lives. However, circuit protection is only a small part of the design in industrial products, but it is a very important and critical design, because the protection device or protection product is usually at the entrance, such as the input port of the power supply. Once the protection device has problems, the whole The system cannot be used in time, so it is increasingly important to protect the accuracy and efficiency of the design.
What new changes will occur in the security industry driven by the smart industry? What new trends will there be? How do chip vendors respond to upcoming opportunities and challenges? This issue of Electronic Consumers' Smart Industry Special Issue invites Li Tinglfuse Technical Application Manager Mr. Du Yusheng to discuss issues related to power management in the smart industry era.
Mr. Du Yusheng, Technical Application Manager, Littelfuse
Charging power supplies or charging piles are gradually becoming popular in society and in the home. Whether they are used indoors or exposed outdoors, their safety protection is indispensable. The highest DC voltage can reach 750VDC, and the separate lightning protection module 10/20KA will also be considered. With the generation of national standards, various products used for safety protection need to be able to better protect against overcurrent. Because "for industrial products, high reliability is the eternal pursuit." Manager Du said. With the development of chip technology and the promotion of the power component market, such as the application of silicon carbide materials, the power density of power supplies is getting larger and larger, and the volume is getting smaller and smaller, and the protection devices are also facing new challenges, such as Surface-mounted fuses and high-power TVS tubes have also increased.
When it comes to the challenges of designing protection devices, what are the challenges for engineers? Manager Du bluntly: How to determine a suitable circuit protection solution is a problem for many engineers. Many engineers have placed circuit protection only in the position of one device. For example, there is a fuse here, there is a protection tube, etc., but the qualitative design inside is not enough. How to let most R&D engineers quickly design the protection circuit that they want to meet the requirements of the standard is also a problem that Lite considers. For this reason, Litech has introduced the circuit protection design tool iDesign, which contains the fuse. Choice, TVS selection and SPA selection are very convenient and rapid, greatly improving the efficiency of circuit design.
When it comes to efficiency, Mr. Du Yusheng believes that industrial automation is still the key driving force to improve efficiency and save costs, and the improvement of actual efficiency is the embodiment of cost savings. Mr. Du Yusheng also stressed that the most powerful driving force for Lite is its technology. Because the product is a safety device, it is safe and reliable. High quality is the pursuit of Lite. The customer chooses the products of Leite for no problem in the subsequent use, which increases the reliability of the customer's products and reduces the later renovation and maintenance. All of them are cost savings in disguise.
The board that is usually seen is damaged by inductive lightning and the damage caused by static electricity. Mr. Du Yusheng explained: These are usually the performance of circuit protection, and the protection device does not perform due to critical needs. Because the protection device or the protection product does not work when it is normal, otherwise it is a malfunction, it does not start when it needs to be activated, or it does not meet the requirements of the protection standard. It is not easy to achieve a reliable design requirement for a simple product design. We should not ignore this.
Now with the improvement of chip technology and technology, the program is becoming more and more popular. The ideas and topologies adopted by engineers are not much different. The key is to grasp the details of the products. "Why some brand products can be used safely and reliably for many years, and some stick to it in less than a year. The design of the device is very important. We usually talk about "a penny and a share" is also the reason. Mr. Du Yusheng said this. He believes that: Generally speaking, if the protection circuit is considered to have meticulous design, the overall product quality of the customer has reached a high self-requirement, and of course it is easy to win the trust of customers with high quality requirements. .
Speaking of the future Chinese market, Manager Du said that in terms of the current Chinese market demand, the bottom-end shoddy and even counterfeit products will gradually disappear in the entire market. Chinese users are richer than before, and high-quality products. The demand is also increasingly urgent. China does not lack high-end consumption. In the past, products that need to be purchased abroad can be purchased in China, and the quality of local products is increasing. The protection design of electronic products has also been upgraded to a new requirement. The cost-effective products are the benchmark for winning customers. Litech's products precisely meet this demand. From the sales performance of protective products in China, it can explain China's domestic market. Customer's recognition of Lite. Local customers choose Litco's cost-effective products to improve their product quality, reach the standards of high security reliability design, and let Lite feel the social responsibility of electronic products.
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