Power electronic devices (power electronic device) is also known for power semiconductor devices, mainly used for electric power equipment to transform and control circuit high power electronic devices (usually refers to the current for tens to thousands of ANN, the voltage is more than hundreds of volts).
Power devices are used in almost all the electronic manufacturing industry, including in the field of computer notebook, PC, server, monitor as well as a variety of peripherals; network communication in the field of mobile phones, telephone and other terminal and terminal equipment; in the field of consumer electronics and traditional black and white all kinds of home appliances and digital products; industrial control of industrial PC, all kinds of instruments and all kinds of control equipment and so on. In addition to ensuring the normal operation of these devices, the power device can also play an effective role in energy saving. Due to the increasing demand for electronic products and the continuous improvement of energy efficiency, China's power device market has maintained a rapid growth rate.
National Bureau of statistics data show that 2010 power device industry in China a total of 498 above scale enterprises, the industry as a whole realize sales income 1015.11 billion yuan, an increase of 6.86%; total profit of 85.27 billion yuan, year-on-year growth of 47.54%. From the point of view of economic type, the largest number of foreign-funded enterprises, the number of enterprises accounted for 47.19% of the number of industry. From the number of enterprises, sales revenue and asset size of view, Jiangsu, Guangdong and Zhejiang provinces accounted for the majority share.