The core of power module is the same as that of electronic equipment. Power supply module is very important to product quality. Therefore, its performance is particularly important when selecting power module. The performance of power module is nothing more than safety, stability, conversion efficiency and other important parameters. You can view input, output, ripple, subdivision, temperature, certification and other indicators to determine. With the development of enterprises and modern technology, more and more enterprises pay attention to the quality and service time of their products, so manufacturers must use professional testing equipment and methods to test the relevant factory products. Today,artist will mainly introduce the reliability test methods of power supply module?
A power module is a power supply that can be directly mounted on a printed circuit board and can be used for digital or analog load power applications. Because of its high reliability, small size, high power density and high conversion efficiency, power system design becomes more and more simple and widely used.
1. Short circuit test
The no-load short-circuit test allows the power supply to run from no-load to short circuit repeatedly, the full load short-circuit test allows the power supply to run continuously from full load to short circuit, and the short-circuit start-up allows the power supply to test from short circuit to repeated power on.
2. Switch test
The input power input voltage point (the maximum load of the power module) will be off for 15 seconds and will last for 5 seconds.
3. Input transient high voltage test
Input the rated voltage, use the oscilloscope to record the number of high voltage cycles, the power supply runs under full load, and the superimposed voltage jump continues to run.
4. Input power unstable output dynamic load test
The input voltage is adjusted to unstable conversion, and the output is adjusted to maximum load and no-load conversion for continuous operation.
Power module
5. Power waveform test
Simulate spike, burr, harmonic voltage input, test power supply performance and parameters, check components and other questions and answers.
6. Voltage test
Test multiple operating overvoltages to understand how overvoltages affect the device.
7. High and low temperature test
Because the performance parameters of the components are abnormal at both high and low temperatures, long-term testing may expose them.
