| Contacts |
ADD：No.2，YangSheng Road，shangye
Zone，Tangxia town，Ruian
City，Zhejiang，China
TEL：0086-577-65189292 65189191
FAX：0086-577-56809292
M.P.：15057759292
E-mail:25105036@qq.com
Http://www.cnzhuoxin.com
|
|
|
| News |
|
|
The development direction of switching power supply
High frequency switching power supply is the direction of its development, so that high-frequency switching power supply miniaturization, and switching power supply into a more wide range of applications, especially in the high-tech fields, and promote the development of switch power forward, with more than two year of double-digit growth rate towards light, small, thin, low noise, high reliability, anti-interference direction. Switching power supply can be divided into AC/DC and DC/DC two categories, DC/DC converter is now modular and design technology and production process at home and abroad are mature and standardized, and has been recognized by the user, but the AC/DC module, because of its own characteristics in the process of making modular technology, encounter and the more complex manufacturing process. In addition, the development and application of switching power supply has great significance in saving energy, saving resources and protecting the environment.
Power electronic devices used in switching power supply for diode, IGBT and MOSFET, the transformer.
There was a small amount of SCR applied in switching power supply input rectifier circuit and soft start circuit, GTR drive, low switching frequency, IGBT and MOSFET were gradually replaced.
Switching power supply is the development direction of high frequency, high reliability, low power consumption, low noise, interference and modular. As the key technology of switching power supply light, small, thin, high frequency switching power supply, so the major foreign manufacturers are committed to synchronize the development of new high intelligent devices, especially to improve the two rectifier loss, and increase scientific and technological innovation in power ferrite material, in order to improve the high frequency and large flux density (Bs) under the high magnetic properties, and the small capacitor is also a key technology. The application of SMT technology in the switching power supply has made great progress, both sides of the circuit board layout components, to ensure that the switch power supply light, small, thin. The high frequency switching power supply must innovate on the traditional PWM switching technology to achieve ZVS soft switch technology, ZCS has become the mainstream technology of switching power supply, and a substantial increase in the efficiency of switch power. For the high reliability, switching power supply manufacturers in the United States by reducing the operating current to reduce the junction temperature and other measures to reduce the stress of the device makes the reliability of the product is greatly improved.
Modularity is the overall trend of the development of switching power supply, can be modular power distributed power system can be designed into a N+1 redundant power supply system, and realize the capacity expansion parallel. For the switching power supply noise of running this drawback, if the individual pursuit of its high-frequency noise will increase, and the circuit part of resonant converter, high frequency can be realized in theory and can reduce the noise, but the actual application of resonant conversion technology still have a problem, we still need to carry out a lot of work in the in this field, in order to make the technology to practical.
Power electronics technology innovation, to make the switch power supply industry has broad prospects for development. China's switch to accelerate the pace of development of power industry, we must take the road of technological innovation, out of the cooperative development road with the China characteristics, contribute to the rapid development of our national economy.
|
|
