Development of power module electronic technology industry

With the rapid development of power electronics technology, the relationship between power electronics equipment and people's work and life has become increasingly close, and electronic equipment can not be separated from reliable power supply. In the 1980s, computer power supply fully realized power modularization and took the lead in completing the power supply replacement of computers. In the 1990s, power modules have successively entered various fields of electronic and electrical equipment, such as program-controlled exchanges, communication, electronic detection equipment power supplies Power modules have been widely used in power supply of control equipment, which promotes the rapid development of power module technology. Especially in recent years, due to the rapid development of data business and the continuous promotion of distributed power supply system, the growth of power module has exceeded that of primary power supply. With the extensive use of semiconductor technology, packaging technology and high-frequency soft switches, the power density of power modules is getting higher and higher, the conversion efficiency is getting higher and the application is becoming simpler and simpler.

The power supply module is a power supply that uses modern power electronics technology to control the time ratio of switching transistor on and off and maintain a stable output voltage. The power supply module is generally composed of pulse width modulation (PWM) control IC and MOSFET. Compared with linear power supply, the cost of power supply module and linear power supply increases with the increase of output power, but the growth rate of both is different. The cost of linear power supply is higher than that of power supply module at a certain output power point, which is the cost reversal point. With the development and innovation of power electronics technology, the power module technology is constantly innovating, and this cost reversal point is increasingly moving to the low output power end, which provides a wide development space for the power module. High frequency of power module is its development direction. High frequency makes the power module miniaturized, and makes the power module enter a wider application field, especially in the high-tech field, which promotes the miniaturization and portability of high-tech products. In addition, the development and application of power modules are of great significance in saving energy, resources and protecting the environment.

The progress of semiconductor integration, power module packaging and circuit topology has brought the power module into a new field, and the power module is gradually developing to the device level. With the advancement of power module integration and consistent design, the application of modules is becoming more and more standardized, the application circuit is becoming more and more simple, and the selection of models is becoming relatively easy. Power module manufacturers have begun to integrate devices and circuits to minimize costs and improve competitiveness