Selection Considerations of POWER SUPPLY?

Article Source：   Published：2014/10/09

Ans:
In order to increase the life of POWER SUPPLY, 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 enhance POWER SUPPLY life.
POWER SUPPLY also need to consider the ambient temperature, and the presence of additional auxiliary cooling equipment in high temperature environment POWER SUPPLY require derating output. Ambient temperature of the output power derating curves.
Depending on the application to select the desired function:
Protection: over-voltage protection (OVP), over-temperature protection (OTP), overload protection (OLP) and so on.
Application features: signaling functions (POWER GOOD, POWER FAIL), remote control, telemetry, parallel functions.
Special Features: Power Factor Correction (PFC), Uninterruptible Power Supply (UPS).
Select the required safety regulations and compliance with electromagnetic compatibility (EMC) certification.