Language 
News
What is a switching power supply module
Release time:
2022-07-26 16:51
Source:
What isSwitching power supply module
Switching power supply modulecan be dividedAC/DC and DC/DC two categories, DC/DC converter has been modular, and the design technology and production technology at home and abroad has been mature and standardized, and has been recognized by users, but AC/DC modular, because of its own characteristics in the process of modularization, technology and process manufacturing problems complex. Simple design. Only one power module, which contains a small number of discrete components, can obtain power.
Shorten the development cycle.Switching power supply moduleThere are generally a variety of input and output options. Users can also repeatedly stack or cross stack to form a building block combined power supply to achieve multiple input and output, greatly reducing the prototype development time.
Change is flexible. If you need to change the product design, just convert or connect it to another suitable power module.
Low technical requirements. Modular power supplies are usually equipped with standardized front ends, highly integrated power modules and other components to make power supply design easier.
Switching power supply moduleThe shell adopts a trinity structure of radiator, radiator and shell to realizeSwitching power supply moduleThe conduction cooling method makes the temperature value of the power supply close to the minimum value. At the same time, yesSwitching power supply moduleand its table for encapsulation.
High quality and reliable.Switching power supply moduleGenerally, it adopts fully automated production and high-tech production technology, so the quality is stable and reliable.
Widely used: The power supply of this module can be widely used in aerospace, ships, locomotives, military weapons, power distribution, post and telecommunications, metallurgy, mining, automatic control, household appliances, instrumentation, scientific experiments, and social production and life, especially in high reliability. It plays an irreplaceable role in the field of high technology. Output voltage regulation
For thoseTRIM or ADJ (adjustable) output pinsSwitching power supply module, The output voltage can be adjusted within a certain range through a resistor or potentiometer. The general adjustment range is ± 10%.
ForTRIM output pin that connects the center of the potentiometer to the TRIM. All the pins of the module are S and-S, and the other ends are connected to S and-S respectively. When there is no S and-S, connect both ends to the positive and negative output terminals of the corresponding main circuit (S to Vin, -S to-VIN), and then adjust the potentiometer. The resistance of the potentiometer is generally 5~10K.
The OUTPUT pin of the ADJ is divided into an input-side adjustment segment and an output-side adjustment segment. The output edge adjustment is the same as the TRIM pin adjustment. Input terminal adjustment can only increase the output voltage, at this time one end of the potentiometer is connected to the center, and the other end is the input terminal.
General modular power products have built-in filters to meet the requirements of general power applications. If a more demanding power system is required, an input filter network should be added. can be usedLC or π-type networks, but care should be taken to choose smaller inductors and larger capacitors as much as possible. In order to prevent the transient high voltage of the input power from damaging the power supply, it is recommended to connect a transient absorption diode at the input end of the module and use it with a fuse to ensure that the input voltage of the module is within a safe range. In order to reduce common mode noise, Y(Cy) capacitance can be increased, and several NF high frequency capacitors are generally selected. R is a fuse, D1 is a protection diode, and D2 is a transient absorption diode (P6KE series).
Previous Page
Previous Page
Related News
2019-08-06
Product selection and application considerations
The design power of each product of our company will have a certain amount of redundant power, which can run for a long time under full load or even over the rated load. However, for the sake of high reliability and prolonging the service life of the power supply, please do not let the load reach the rated value. It is generally recommended to use 60%-80% of the rated load, and the ambient temperature is recommended to be about 30 ℃, which can be fully loaded at an ambient temperature of 55 ℃, but this will undoubtedly greatly reduce the reliability and service life of the product. In actual use, please pay attention to the two factors of controlling load and temperature. If the ambient temperature is relatively high, it is necessary to reduce the load as much as possible (that is, to increase the load margin and select products with greater output power). On the contrary, if a large load current is required, then try to do a good job of ventilation and heat dissipation, such as placing the power supply module in an open space and increasing cooling fans. The specific value is not absolutely fixed. Generally, it is recommended that the load should not exceed 20% of the rated load when the ambient temperature is 55 ℃, which can keep the product very high reliability. Tip: Please use temperature measuring equipment to evaluate the temperature, and do not rely on skin feeling. Short time and a small proportion of full load, high temperature operation, the reliability and life has little effect. For example: each full load lasts less than 1 minute or half a minute, and the interval is more than 10 minutes, while the load during the interval is less than 15% of the rated load, then even if the operation at 55 ℃ is also possible. Safe Use Warning: Since the bare board series does not have a shell, the input is 220V AC at the same time. The input pins and corresponding terminals of the module are directly connected to 220V. Please pay great attention to prevent short circuit between electric shock and metal objects and ensure that the power supply is disconnected before any touch. Load Requirements for 2. Use of Multiple Output Power Supplies Generally, the voltage accuracy of the output of the multi-output power supply is: the nominal value of the main output is plus or minus 1%, and the nominal value of the secondary output is plus or minus 5%-10%. The first output of the multi-output power supply is the main circuit, and the other output is the secondary circuit. The voltage accuracy and carrying capacity of the main circuit are higher than those of the secondary circuit. Therefore, the main circuit with large current and high voltage accuracy requirements should be generally selected, it is appropriate that the ratio of each current is 50-100%, and the secondary circuit must not be loaded separately under the condition of no load on the main circuit, otherwise the secondary circuit voltage is too low to be used normally. In addition, if the main circuit load is full load and the secondary circuit load is light load, the secondary circuit voltage may increase, otherwise the secondary circuit voltage will decrease, and the reliability and service life will have little effect. For example, if each full load lasts less than 1 minute or half a minute, and the interval is more than 10 minutes, while the load during the interval is less than 15% of the rated load, then even operation at 55°C is possible.
2018-08-29
Application field of switching power supply module
Switching power supply module is applied in several major aspects 1. Electric power, mainly including integrator and electric meter and intelligent electric meter 2. Industrial control, industrial control field 3. Medical treatment, medical equipment, mainly including tire protection instrument, monitor and so on 4. Military industry, military industry is a very widely used aspect. in military equipment. Switching power supply module applications in several major areas.
2018-08-29
Precautions for the use of switching power supply modules
The high-frequency transformer of switching power supply is generally shielded for the first time, which is not described above. Switching power supply is a high-frequency product, PCB component layout for EMI, please pay close attention to this point. If the switching power supply has a mechanical shell, the structure of the shell has a great influence on the radiation, please pay close attention to this point. The parameters of different manufacturers of the main switch tube and the main diode have certain differences, which have certain influence on EMC. Please pay close attention to this point.
2018-08-29
Can switching power supply and module power supply be universal?
A module power supply is a power supply that can be mounted directly on a printed circuit board and is characterized by providing power to application-specific integrated circuits (ASICs), digital signal processors (DSPs), microprocessors, memory, field programmable gate arrays (FPGAs), and other digital or analog loads. In general, such modules are called point-of-load (POL) power supply systems or point-of-use power supply systems (PUPS).
2018-08-29
The difference between switching power supply and module power supply
(1) The difference in use: module power supply, output voltage, remote control switch circuit, input protection circuit. Switching power supply, control the switch tube on and off time ratio, maintain a stable output voltage of a power supply. (2) The difference in composition: Switching power supply: Generally composed of pulse width modulation (PWM) control IC and MOSFET. Module power supply: it is composed of power supply module with a small amount of discrete components.
2018-10-19
Loss of switching power module
The loss of high-power module switching power supply mainly includes high-frequency switching loss, high-frequency transformer loss, rectifier loss and line conduction loss. In the application of low voltage and high current output, the rectifier loss and line conduction loss occupy a larger proportion, the lower the output voltage, the greater the output current, the rectifier loss and line conduction loss accounted for the proportion of the total loss of the module switching power supply.
Advisory Hotline
Contact: Liu Gong
Telephone:86-20-37720376
Mailbox:sales@sanmim.com
Address: Building D, Micro Think Tank Industrial Park, No.8 Xianke 1st Road, Xiutang Village, Huadong Town, Huadu District, Guangzhou City, Guangdong Province
WeChat Public Number
Mobile phone mall
©2023 Guangzhou Sanmin Electronic Technology Co., Ltd. All rights reserved