Instructions on the use of switching power supplies
Source:
|
Author:pmodcd779
|
Published time: 2014-10-11
|
1929 Views
|
Share:
With the rapid development of power electronic technology and switch industry, power electronic devices and is closely related to people's work and life, and the electronic equipment is inseparable from the reliable power supply, into the 80 s is made up of the computer power supply switch power supply, power generation, the first complete computer into the switch power supply in the 90 s have entered various electronic, electrical equipment, program-controlled switches, communications, electronic test equipment such as power supply, control equipment power supply has been widely used for switching power supply
With the rapid development of power electronic technology and switch industry, power electronic devices and is closely related to people's work and life, and the electronic equipment is inseparable from the reliable power supply, into the 80 s is made up of the computer power supply switch power supply, power generation, the first complete computer into the switch power supply in the 90 s have entered various electronic, electrical equipment, program-controlled switches, communications, electronic test equipment such as power supply, control equipment power supply has been widely used for switching power supply, promote the rapid development of the technology of switching power supply. Switching power supply is a kind of power supply that USES modern power electronics technology to control the time ratio of switching transistor turning on and off and maintain stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) controlling IC and MOSFET. Compared with linear power supply, the cost of switching power supply increases with the increase of output power, but the rate of increase varies. The cost of linear power supply at a certain output power point, but higher than the switching power supply, this cost reversal point. With the development and innovation of power electronics technology, switching power supply technology is constantly innovating, and this cost reversal point is moving to the low output power end, which provides a wide development space for switching power supply.
High frequency of switch power supply is the direction of its development. High frequency makes the switch power supply miniaturized, and makes the switch power supply into a wider range of applications, especially in the field of high and new technology, promoting the miniaturization and portability of high and new technology products. In addition, the development and application of switching power supply are of great significance in energy saving, resource saving and environmental protection.
