Tests vary depending on the type and specifications of the power supply, and the purpose of the testing.
By testing a switch mode power supply, we can determine:
- If the power supply meets its specifications, such as input voltage range, output voltage and current, ripple and noise, line and load regulation, efficiency, and protection levels.
- If the power supply is reliable and meets the desired MTBF requirement.
- If the power supply is stable and can maintain its performance under different environmental conditions and changes in load.
- If the power supply is safe to use, with proper protection mechanisms against overload, short circuit, and over-temperature.
In summary, testing a switch mode power supply provides information on its performance, reliability, stability, and safety.