The power module is the same as the core of an electronic device. Power module is very important to product quality. Therefore, when selecting power module, its performance is particularly important. The performance of the power module is nothing more than security, 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 use time of their products, so manufacturers must use professional test equipment and methods to test relevant factory products. Today, xiaobian to introduce the main power module reliability test methods what?

A power module is a power supply that can be mounted directly on a printed circuit board and can be used in power applications for digital or analog loads. Due to its high reliability, small size, high power density and high conversion efficiency, power system design is becoming more and more simple and widely used.

1. Short circuit test

The no-load short-circuit test allows the power supply to be tested repeatedly from no-load to short-circuit, the full-load short-circuit test allows the power supply to be tested continuously from full-load to short-circuit, and the short-circuit start allows the test to be tested repeatedly from short-circuit to energize.

2. Switch test

Input power The input voltage point (the maximum load on the power module) will be turned off for 15 seconds and will last for 5 seconds.

3. Input transient high voltage test

When the rated voltage is input, the number of high-voltage cycles is recorded by oscilloscope. The power supply runs under full load, and the superimposed voltage jump continues to operate.

4. Dynamic load test of unstable input power output

The input voltage is adjusted for unstable conversion and the output is adjusted for maximum load and no-load conversion for continuous operation.

5. Power waveform test

Simulate spikes, burrs, harmonic voltage inputs, test power performance and parameters, check components, and other questions and answers.

6. Voltage testing

Test multiple operating overvoltages to see how they affect the device.

7. High and low temperature tests

Because the component's performance parameters are abnormal at both high and low temperatures, long-term testing may be exposed.