Bare Board Power Module-Analysis of the Development of Switching Power Module
Release time:
2022-06-20 13:45
Source:
Switching power supply module is a large category of electronic power,Bare Board Power ModuleIt has the advantages of miniaturization, high efficiency, light weight, high power density, wide input range, low power consumption, and strong reliability. It has developed rapidly in recent years. Generally, its power is medium and small power, and the power of the product is mostly between 5W-350W.Bare Board Power ModuleWidely used in industrial automation, LED lighting, industrial equipment, scientific research equipment, military equipment and other fields.
SwitchBare Board Power ModuleMainly used in the industrial sector, accounting for 54%, followed by consumer electronics, accounting for 33%. In recent years, with the development of emerging power industries (such as new energy power generation, original filters, reactive power compensation, etc.), new energy (such as electric vehicles, etc.), transportation and other fields, the demand for switching power supplies has grown rapidly, and suppliers are mainly distributed in East China, South China and North China. Limit switchBare Board Power ModuleThe main factors of development are as follows:
1. Performance of power semiconductors
For example, in 1998, a cold metal oxide semiconductor transistor appeared, which reduced the on-resistance by an order of magnitude. It is a high-frequency power semiconductor device with wide operating voltage and fast switching frequency.
2. PFC converter
Since the input terminal of the AC DC converter circuit has the rectifying element and the smoothing capacitor, the AC input terminal power of the single-phase rectifying power supply device is 0.6 to 0.65 when the sinusoidal voltage is input.
3. Power density
The miniaturization and high frequency of power supply has been one of the focus of research. In order to achieve high power density, it is necessary to increase the operating frequency of the PWM converter and reduce the volume and weight of the circuit energy storage components.
4. Voltage regulator
Voltage regulator refers to a DC-DC converter system module with low voltage and high current output, which can increase the working power supply to the microprocessor.
5. Distributed power structure
The distributed power supply structure is divided into two types and three types, which are suitable for high-speed integrated circuits and large-scale digital switching systems.
6, High Frequency Magnetic Components
Bare Board Power ModuleThere are some requirements for magnetic materials used in high frequency magnetic components used in power supply systems. At present, nanocrystalline soft magnetic materials have been developed and applied. After high frequency, soft switching technology is needed to improve the efficiency of switching power supply.
7. Electromagnetic compatibility
In practical applications, high-frequency switching power supplies will produce strong conductive electromagnetic interference and harmonic interference, which will pollute the electromagnetic environment and cause interference to equipment.
8, Integrated Technology
In recent years, the development trend of integration technology is to integrate a small power supply system on a chip. Power producers should make their products modular, low-cost, manufacturable and mass-produced.
9, Design and Testing Techniques
Design and test data technology includes the main circuit of the product, control circuit structure design, material selection, performance optimization, etc., thermal test of power management system, EMC test, mass production manufacturability test,Bare Board Power ModuleResearch on education in the field of application development.
10, Digital Control Technology
SwitchBare Board Power ModuleThe digital control is a new development trend and has been applied to power conversion equipment. Many foreign countries have developed and produced digital control chips and software.
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