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How to select the switching power supply

Click:101 Time:2019-07-12 15:01:07

Selection and precautions of a switching power supply, Selection Considerations of switching power supplies
1, in order to increase the life of switching power supplies, and suggested the use of more than 30% of rated output power models. For example, if the system needs a 100W power supply, it is recommended that the selection is greater than the rated output power of 130W models, and so can effectively improve the life of the power supply.
2, also need to consider switching power supplies operating temperature, and whether there is additional cooling equipment, in a high temperature environment power supply needs output derating.
3, depending on the application field to select the desired function
A, protection: overvoltage protection, overcurrent protection, overtemperature protection, overload protection.
B, application functions: a signal feature series function, parallel functions.
C, special features: constant function, charging function, Power Factor Correction (PFC), Uninterruptible Power Supply (UPS).
4. Select the desired safety and compliance with electromagnetic compatibility (EMC) certification.

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