Smart homes are becoming more and more popular, and perhaps inadvertently people are already enjoying the convenience of intelligence. There are a lot of technologies behind the intelligence to support its normal operation. Some people in these technologies say that network technology is the nerve system of smart homes. Then I am the heart of the connected appliances in smart homes. With small bodies, I can use four or two. Perhaps, you have already seen it, I am on the power module.
As we all know, electronic products continue to improve performance, but also pursue small and light. In order to catch up with the trend, the engineers created my own supplements with various "medicine effects" such as circuits, materials, production processes, etc., and let me succeed in "slimming." In order to make me more temperament, the engineers also equipped me with new clothes - silicon carbide. The extremely short forward recovery and reverse recovery times of silicon carbide diodes, the lack of forward recovery and reverse recovery charge characteristics make me slimmer. Therefore, I have been developing in the direction of miniaturization, systemization, chipping, high integration, high precision, high performance, high reliability, high radiation resistance and low power consumption.
Human modern life is inseparable from electrical appliances, and with the "big change of blood" of household appliances brought by smart homes in recent years, the demand for interconnected electrical appliances for my power modules has increased. According to the downstream demand of the module power supply, the demand for module power supply in 2017 is about 6.39 billion yuan. In the next few years, the sales volume of China's modular power supply market will grow at a rate of 12%-18%.
In the case of smart homes, the power modules required in the interconnected electrical appliances can be divided into two major categories: one is the AC to DC power supply, mainly for the control board chip and the control device; the other is the DC to DC power supply. Mainly for the low voltage chip and communication interface part of the power supply.
In addition to modular power supplies, switching power supplies are also widely used in smart homes, but in some special cases, circuit operation is sensitive to the switching noise of the power supply. Such as power carrier, wireless communication, wireless identification and other occasions. At present, one of the main applications of power carriers is in the smart home control system. At the same time, the power line carrier frequency of China is from 9KHz to 500KHz, and the carrier band bandwidth is 4KHz. Due to the impedance variation of the power line and the noise interference of the power line, the development of the power carrier is greatly limited. In order to increase the power carrier communication distance, the switching frequency of the power supply of the circuit carrier unit by the power supply manufacturer must be far away from the power line carrier frequency. At present, the more carrier frequencies used in China are 115KHz and 132KHz. In this case, it is necessary to supply power with a switching frequency of about 60 kHz.
As a leader in professional power research and development, Infineon focuses on the unique features of large home appliances without worrying about the need to develop complex power subsystems. A highly integrated, off-the-shelf solution for large appliances at a given power level based on power and efficiency requirements.
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The development of functions other than functional lighting in large household appliances is driven by consumer demand. Current market trends incorporate aesthetic features such as ambient lighting and lighting. Infineon offers a broad portfolio of cost-effective linear and step-down LED driver control ICs for LED strips and multi-channel LED solutions with drive currents from as low as 10 mA to as high as 500 mA.
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Jilin Lander Intelligent Technology Co., Ltd , https://www.jllandertech.com