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Bare Board Power Module Benefits and Features
Release time:
2022-10-11 10:53
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With the development of the electronic industry, the power supply is required to be smaller and more reliable. With the development of high-frequency soft-switching technology, semiconductor technology and packaging technology, the power density of power modules is getting higher and higher, the conversion efficiency is getting higher and higher, and the application is getting simpler and simpler.What are the advantages of bare board power modules over discrete solutions? In addition to cost savings and development time, bare board power module solutions have many advantages.
Advantages of power supply:
1. Simple design
At present, there are many kinds of modules on the market, such as AC DC,DC DC, high voltage, etc. You only need to choose a suitable power module, which can be used with several discrete components. The highly integrated circuit inside the bare board power module makes the design more compact, and the supplier can also provide professional technical support and system solutions. The big difference with discrete models is that manufacturers can provide important data such as models, peripheral circuits, parameter curves, etc.
2. Save cost and time.
The bare board power module has a variety of input and output options, which can be added repeatedly or cross-added to form a building block combined power supply to realize multiple input and output. Compared with discrete debugging, debugging is simpler and safer, greatly simplifying design and application, and shortening development time.
3. High reliability
Generally, bare board power modules use automation technology to ensure quality and reliability. It is selected by professional power supply R & D personnel; the R & D team designs and develops in accordance with strict standards, and has undergone complete reliability testing and mass production testing. However, in-depth testing of discrete schemes is difficult.
4. High power, density and efficiency
The bare board power module generally uses a multi-layer PCB aluminum substrate, which has high power density and small size, saving the space occupied by the system. At present, the 1/4 brick of the DC-DC module is as high as 1000W, and it is difficult for the discrete scheme to reach this standard.
5. Easy maintenance and flexible design
In the product application, if there is a problem, just replace another module to work normally. If the design needs to change the scheme midway, only need to change, do not need to modify the entire power supply circuit.
6. Widely used.
It has been widely used in instrumentation, automotive electronics, rail transit, data communication, industrial automation, smart home, aerospace, military industry, scientific research experiments, ships, metallurgical mines, power systems, medical electronics, security monitoring, new energy, petrochemicals, Handheld electronic equipment and many other fields.
bare board power supply power supply function:
The main function of the bare board power module is voltage conversion, which can convert AC or DC into the AC or DC you want. Simple understanding is similar to the power adapter. Your electronic products need to be plugged in to operate normally, but they cannot be directly connected to 220V, because this will cause the product to burn, so a special conversion device is required.
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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.
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