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SOA test method, system and device of switching power supply MOS transistor and readable storage medium

A MOS tube and switching power supply technology, applied in the field of MOS tube safety testing, can solve the problems of insufficient familiarity with testing methods and test standards, failure to notice key test nodes, unfavorable test data analysis on the cloud, etc., to optimize the test operation interface , High test efficiency, highlight the effect of substantive characteristics

Pending Publication Date: 2021-11-05
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing test method can complete the test purpose, due to the particularity of the SOA test of the switching power supply MOS tube, it mostly appears in the test of EFUSE devices, and the test frequency is less, but the importance is high
Due to the lack of familiarity of some testers with test methods and test standards, all key test nodes cannot be noticed during the test, and test results may be wrong, which will have a negative impact on the development process
[0005] In addition, the test efficiency of manual test is low, and the test results need to be manually judged and filled in the test report, which is contrary to the automation trend of switching power supply test, and is not conducive to the "cloud analysis" of test data

Method used

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  • SOA test method, system and device of switching power supply MOS transistor and readable storage medium
  • SOA test method, system and device of switching power supply MOS transistor and readable storage medium

Examples

Experimental program
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Embodiment 1

[0069] Such as figure 1 As shown, the present embodiment provides a SOA testing method of a switching power supply MOS transistor, comprising the following steps:

[0070] S1: Build a Python-based SOA test platform.

[0071] Specifically: use the QThread multi-thread method to build the platform architecture, and separate the UI interface and the test program; use the PyQt library for graphical programming, and use the QSS language to edit the operation logic to build the operation interface; use the pythonwin32process library to call the Windows system API to perform test tasks Instant suspend and resume of threads.

[0072] The specific construction process can be modified on the existing SOA automated test platform, abandoning the limited Tkinter library, using the PyQt library for graphical programming, and cooperating with the QSS language to make the operation logic more intuitive and the operation interface more friendly. Firstly, the QThread multi-thread method is us...

Embodiment 2

[0087] Based on Example 1, such as figure 2 As shown, the present invention also discloses a SOA test system for switching power supply MOS transistors, including: a platform construction unit 1 , a test thread creation unit 2 , a test scenario execution unit 3 , a data calibration unit 4 and a calculation unit 5 .

[0088] Platform building unit 1 is used to build a Python-based SOA test platform. Platform building unit 1 is specifically used for:

[0089] Use the QThread multi-thread method to build the platform architecture, and separate the UI interface and the test program; use the PyQt library of graphical programming, and use the QSS language to edit the operation logic to build the operation interface; use the python win32process library to call the Windows system API to test the thread of the task Instant Pause and Resume.

[0090] The test thread creation unit 2 is used to start the SOA test platform based on Python. After loading the board information, select the...

Embodiment 3

[0098] This embodiment discloses a SOA testing device of a switching power supply MOS transistor, including a processor and a memory; wherein, the processor implements the following steps when executing the SOA testing program of the switching power supply MOS transistor stored in the memory:

[0099] Step 1: Run the Python-based SOA test platform. After loading the board information, select the PowerRail to be tested. After confirming the information, release the test task. The system will create an independent test thread.

[0100] Step 2: After the test thread is created, the Python-based SOA test platform calls internally defined functions to automatically call test resources and execute common test scenarios. During this process, the Python-based SOA test platform will automatically analyze whether the test scenario meets the SOA test requirements, and automatically calibrate the probe to reduce test errors.

[0101] Step 3: During the test, if the test engineer has any o...

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Abstract

The invention provides an SOA test method, system and device for a switching power supply MOS transistor and a readable storage medium. The method comprises the steps that an SOA test platform based on Python is constructed; the SOA test platform based on Python is started, and an independent test thread is created; after the test thread is created, an internal definition function is called to complete calling of test resources, and a test scene is executed; in the process of executing the test scene, if user interruption is received, processing is performed preferentially; after the current test scene is ended, test data and recommended data calibration are generated, and data calibration of the test data is generated according to the recommended data calibration; whether all the current test scenes are tested or not is judged; and the test data of all the test scenes is analyzed and calculated, and a test result is generated. The SOA automatic test of the MOS transistor is realized, an auxiliary analysis tool of the test result is provided, and the possibility of errors of the test result is reduced.

Description

technical field [0001] The invention relates to the technical field of MOS tube safety testing, and more specifically relates to an SOA testing method, system, device and readable storage medium of a switching power supply MOS tube. Background technique [0002] As a representative of new semiconductor devices, MOS transistors are widely used in server power systems as important switching elements. In order to ensure that the MOS tube can work safely, it is particularly important to perform an SOA test on the MOS tube. The SOA test is a functional test to verify whether the MOS tube is within the safe operating area (Safe Operating Area, SOA). In the R&D cycle of the server, there are many test items and it takes a long time. Under the background that the server R&D test is fully automated, SOA test is an important test item, and it is very necessary to realize automated testing. [0003] Currently, the SOA testing method of MOS tubes is manual testing. The specific proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/26
CPCG01R31/2601G01R31/2621
Inventor 吕泽华
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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