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If you want to design a power module, what aspects need to be considered?
Author： ZYG Power Module Time： 2022-11-17
If you are a switching power supply technical engineer, there is no need to look at the introduction of power modules. When you are still a novice, or learn SCM design, it is best to look down word by word.
How to choose the right power module
Principle and technology of circuit design Only from a professional point of view can the principle of circuit and circuit quality be distinguished. At present, the power module can be divided into two types: bare plate and filled seal. The bare board can be divided into two types in an intuitive way, such as reasonable, orderly, generous, orderly layout of electronic components, bright welding spot and straight. However, the packing and sealing module cannot see inside, but because it is not exposed, it is much better in terms of safety and performance indicators. The welding process may include both manual and wave soldering. The welding quality of mechanized wave soldering is better than manual welding.
The advantage that chooses power supply module
At present, different dealers release a variety of different power modules in the sales market, but different products are not the same type of working voltage, power, role and topology.
Choosing the power module can save the development and design time, make the goods can be released to the market quickly, so the power module is better than the integrated solution.
- Each control module is capable of rigorous testing in various aspects to ensure its aspect ratio is reliable, mainly including plug-in testing to facilitate the removal of substandard goods.
In comparison, integrated solutions are more difficult to detect because all power supply and distribution systems are closely related to other system software on the power supply circuit.
- Different dealers can design control modules of the same size in accordance with the current standard specifications and present different choices for technical engineers who design dc switching power supplies.
- The design scheme and testing of each control module are carried out in accordance with the requirements of the specification characteristics, which is conducive to reducing the risk of new technology application.
- If the integrated solution is adopted, a whole host board must be disassembled and replaced if there is a problem in the supply system software of switching power supply; If the control module type design scheme is chosen, the difficult control module can be removed and replaced, which is conducive to reducing the cost and development design time.
Very easy to ignore the power module design problem
Although the selection of control module design scheme has several advantages, but the control module design scheme so that on board DC/DC converter design scheme is its own problem, many people do not understand this problem, or do not give enough attention.
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