How Do I Check the Stability of a DC-DC Power Module?
Stability is an important indicator to measure the DC power module, and the stability of the power module directly affects the working stability of power products and equipment. The stability of the DC-DC power module can be evaluated by detecting parameters such as output voltage, output current, load, waveform, and efficiency.
1.Static test methods
The static test is to test the output voltage and output current of the power supply by means of a DC voltmeter and a load ammeter, respectively. Before the test, the power supply needs to be thermally stabilized, and the test should be carried out after stabilization. During the test, the load current can be changed to obtain the maximum output current and output voltage. In addition to the output voltage and output current, some of the quiescent test parameters include ripple, undulation, heave, quiescent output voltage accuracy.
2.Dynamic testing methods
The dynamic test method is mainly to detect the load capacity of the power supply. Before dynamic testing, you need to set the test time and test frequency. The metrics that characterize the load capacity are the load capacity and the load capacity rise time. In the dynamic test process, it is necessary to change the value and frequency of the test load to obtain the output voltage and current under normal working conditions.
3.Test load testing methods
First, set up the test load, which should meet the specifications of the power supply.
Second, the rated voltage is applied to the power supply, and the output current and voltage value are recorded.
Then, change the value of the test load and test the output current and voltage again.
The output current and voltage values under different test conditions are obtained, and the data are analyzed and compared.
In addition to the above test methods, short circuit protection test, temperature test, etc., can also be carried out, and the data can be analyzed after the test is completed to evaluate the stability and reliability of the DC-DC power module.
The atecloud-power power test system examines the advantages of DC-DC power modules
1.Function expansion to meet user testing needs
The system contains 58+ test items, such as output voltage, output current, efficiency, waveform, current harmonics, etc. In addition, the system supports new test items, which can be customized according to the specific needs of users.
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