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Description of the purpose of switching power supply
Source: | Author:pmodcd779 | Published time: 2021-09-01 | 1401 Views | Share:

With the rapid development of power electronic technology and switching industry, power electronic equipment has an increasingly close relationship with people's work and life, and electronic equipment is inseparable from reliable power supply. In the 1980s, the computer power supply fully realized the switching power supply, took the lead in completing the replacement of computer power supply, and in the 1990s, the switching power supply has successively entered the fields of various electronic and electrical equipment, Switching power supply has been widely used in program-controlled exchange, communication, electronic detection equipment power supply and control equipment power supply, which has promoted the rapid development of switching power supply technology. Switching power supply is a power supply that uses modern power electronic technology to control the time ratio of switching transistor on and off and maintain stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. Compared with linear power supply, the cost of switching power supply and linear power supply increases with the increase of output power, but their growth rates are different. The cost of linear power supply is higher than that of switching power supply at a certain output power point. With the development and innovation of power electronics technology, switching power supply technology is constantly innovating. This cost reversal point is increasingly moving to the low output power end, which provides a wide development space for switching power supply.
The high frequency of switching power supply is its development direction. The high frequency makes the switching power supply miniaturized, and makes the switching power supply enter a wider application field, especially in the field of high-tech, which promotes the miniaturization and portability of high-tech products. In addition, the development and application of switching power supply is of great significance in energy conservation, resource conservation and environmental protection.