source:Industry News Popular:adapter release time:2021-08-19 09:28:29 Article author:sznbone
In terms of input anti-interference performance of switching power supply, due to the characteristics of its own circuit structure (multi-stage series connection), it is difficult for general input interference such as surge voltage to pass. The technical index of output voltage stability is compared with linear power supply. Great advantage, its output voltage stability can reach (0.5～1)%. As a power electronic integrated device, switching power supply module should pay attention to the following points in the selection:
1 Selection of output current
Due to the high efficiency of the switching power supply, which can generally reach more than 80%, in the selection of its output current, the maximum absorption current of the electrical equipment should be accurately measured or calculated, so that the selected switching power supply has a high cost performance. Usually the output calculation formula is:
Is=KIf
In the formula: Is-the rated output current of the switching power supply;
If—the maximum absorption current of the electrical equipment;
K—margin coefficient, generally 1.5～1.8;
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