Switching power supply with its advantages of high efficiency, light, cheap, has become the mainstream of the market, but compared with traditional linear power supply, there are three main disadvantages: slower instantaneous recovery time, higher PARD, lower reliability. Therefore, the detection of switching power supply than the traditional linear power supply has higher requirements, switching power supply detection schemes are many, need to be tested by electronic load.
 

500kw load bank

 

1. Load effect test: Load effect is a static performance test, the power supply's ability to maintain stable output under predetermined load changes. During the test, the influence of cable is very significant. In order to compensate the influence of cable, it is recommended that users enable the remote compensation function of electronic load.

2. Transient response test: Transient response test is a dynamic performance test, that is, the ability of the tested power supply to switch periodically and maintain stable output under two preset load conditions. Jump for the load current, output voltage CV will be ringing, it makes the power feedback loop imbalance, forming voltage overshoot and drop, will affect the reliability of equipment operation, even damage on voltage sensitive device, transient response testing should not only from the application level to evaluate performance, can also cause of instability critical defects are from the level of production, Core information such as ESR, ESL and output capacitance, response time and phase margin of feedback loop, maximum transient output current of the system and so on.