Development and application of switching power supply module

by:MOSO     2020-02-22
The rapid development of communication industry has greatly promoted the development of communication power supply. High frequency miniaturized switching power supply and its technology have become the mainstream of modern communication power supply system. In the field of communication, rectifier is usually called primary power supply, while DC-DC (DC/DC)The converter is called a secondary power supply. The function of the primary power supply is to transform the single-phase or three-phase AC power grid into a DC power supply with a nominal value of 48 V. At present, among the primary power supplies used in program-controlled switches, the traditional phase-controlled stabilized power supply has been replaced by high-frequency switching power supply. High-frequency switching power supply (Also known as switching rectifier SMR) Through the high frequency operation of MOSFET or IGBT, the switching frequency is generally controlled at 50- In the range of 100 kHz, high efficiency and miniaturization are realized. In recent years, the power capacity of switching rectifier has been continuously expanded, and the capacity of single unit has increased from 48 V/12. 5A, 48 V/20A expanded to 48 V/200A, 48 V/400A. Due to the wide variety of integrated circuits used in communication equipment and their different power supply voltages, high power density high frequency DC-is used in communication power supply system- DC isolates the power module from the intermediate bus voltage (Generally 48 v dc) It is converted into various required DC voltages, which can greatly reduce losses, facilitate maintenance, and is very convenient to install and increase. Generally, it can be directly installed on the standard control board, requiring * * high power density for the secondary power supply. Due to the continuous increase of communication capacity, the capacity of communication power supply will also continue to increase. Dear Customer: Hello, our company is committed to providing high-quality products, complete solutions and superior technical services for the majority of users. The main products are power supply module, DC- DC, VICOR, LED driver, switching power supply, etc. You can call the company's service line through the web page to learn more about the details of the product, the perfect service is our endless pursuit, welcome new and old customers to rest assured to buy their favorite products, we will serve you wholeheartedly!
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