Is it true that the greater the power of module power supply, the better?
Author： Zhongyiguang Guangzhou Technology Ltd release time：2020-06-08 09:30:32CTR：
Module power in the selection of output power is not the bigger the better, too large cost on the high side, there will be a lot of noise. Small and very easy to break, usually recommended is specific application of 30% to 80% of the output power is appropriate.
Why do many people and machines choose high-power module power supplies when their power is not high? Power detection is the main performance of a comprehensive power module under various loads at maximum power, including light load and full load. It is usually more stable when the load is low.
Is a high-power modular power supply cheaper than a low-power one? The price difference is by the plan, the structure, the material, the characteristic of the different harm, some good material, high credibility, good function module power supply is bound to be a little more expensive than almost.
Due to low efficiency and high temperature, modules may be destroyed or their service life greatly reduced, usually for normal operation. Additional loading is strongly recommended.
How to select the power supply with the highest power and lower operating temperature? This is to analyze the module power elements, the power transformer depletion key centralized in the main control loop of large power electronics devices. The key loss is divided into iron loss and copper loss. Iron loss is relatively stable, while copper loss changes with load height.
The higher the high efficiency of the module power, the smaller the loss of kinetic energy transmission is, and the key expression of the loss is hot, hot small operating temperature. Generally, the lower the output voltage, the lower the high efficiency and the higher the calorific value. Under similar conditions of high efficiency, the larger the module volume, the higher the heat pipe heat dissipation characteristics and the lower the operating temperature.
Select the module power supply that is larger than the maximum power, and the normal temperature will be significantly lower than the module with the maximum power. But this is not absolute at all, the key depends on the thermal characteristics of the power module.
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