(5) Main technical indicators of switching power supply
1.Input parameters
Input voltage size, AC or DC, number of phases, frequency, etc.
2.Output parameters
Output power, output voltage, output current, ripple, voltage stabilization (steady current) accuracy, regulation rate, dynamic characteristics (settling time: settling time), power supply start-up time and holding time.
Output voltage: rated value + adjustment range. The upper limit of the output voltage should be as close as possible to the rated value to avoid unnecessary excessive design margin.
Output current: rated value + overload multiple. If there is a steady flow requirement, the adjustment range will also be specified. Some power supplies do not allow no load, so a lower current limit should also be specified.
Voltage and current stabilization accuracy: influencing factors include input voltage regulation rate, load regulation rate, and aging deviation. The accuracy of the reference source, the accuracy of the detection components, and the accuracy of the operational amplifier in the control circuit affect the accuracy of voltage stabilization and current stabilization.