System and method for testing SOA characteristics of MOS transistor

A technology of MOS tube and characteristics, which is applied in the system field of testing MOS tube SOA characteristics, and can solve the problems of poor accuracy of test results

Pending Publication Date: 2021-07-20
SHANDONG YINGXIN COMP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present application provides a system and method for testing the SOA characteristics of MOS transistors to solve the problem of poor accuracy of test results caused by the test methods in the prior art

Method used

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  • System and method for testing SOA characteristics of MOS transistor
  • System and method for testing SOA characteristics of MOS transistor
  • System and method for testing SOA characteristics of MOS transistor

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Experimental program
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Embodiment 1

[0053] see figure 1 , figure 1 It is a schematic structural diagram of a system for testing the SOA characteristics of a MOS transistor provided in the embodiment of the present application. Depend on figure 1 It can be seen that the system for testing the SOA characteristics of the MOS transistors in this embodiment mainly includes: a PC controller, an oscilloscope, a tested MOS transistor, a power supply, and an electronic load instrument. The PC controller is connected to the electronic load, power supply and oscilloscope through the USB-GPIB cable respectively. The input terminal of the MOS tube under test is connected to the power supply, and the power supply adopts a DC power supply, that is, DC Source. The DC Source supplies power to the MOS tube under test according to the instructions of the PC controller, thereby performing a full-load power-on SOA test. The output terminal of the MOS tube is connected to the electronic load meter through the load line, and the el...

Embodiment 2

[0067] exist Figure 1-Figure 4 Based on the example shown see Figure 5 , Figure 5 It is a schematic flowchart of a method for testing the SOA characteristics of a MOS transistor provided in the embodiment of the present application. Depend on Figure 5 It can be seen that the method for testing the SOA characteristics of the MOS transistor in this embodiment mainly includes the following processes:

[0068] S1: Get the SOA SPEC data of the MOS tube.

[0069] Obtain and store the SOA SPEC data of the MOS tube, which is convenient for subsequent comparison with the test data, so as to determine the SOA characteristics of the current MOS tube.

[0070] S2: According to the obtained command and the SOA SPEC data of the MOS transistor, perform a full-load power-on SOA test on the tested MOS transistor.

[0071] Specifically, step S2 includes the following processes:

[0072] S21: Grab V according to the acquired command VDS Screenshots at the start and end of the trigger ...

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Abstract

The invention discloses a system and a method for testing SOA characteristics of an MOS transistor, the system comprises a PC controller, an oscilloscope, a tested MOS transistor, a power supply and an electronic load meter, the input end of the tested MOS transistor is connected with the power supply, the output end of the MOS transistor is connected with the electronic load meter through a load line, the tested MOS transistor is further connected with the oscilloscope through a probe, and the PC controller is respectively connected with the electronic load instrument, the power supply and the oscilloscope through USB-GPIB (Universal Serial Bus-General Purpose Interface Bus) lines. The method comprises the following steps: obtaining SOA SPEC data of an MOS transistor; according to the obtained command and the SOA SPEC data of the MOS transistor, carrying out a full-load power-on SOA test on the MOS transistor to be tested; and according to the obtained command and the SOA SPEC data of the MOS transistor, carrying out a short-circuit power-down SOA test on the tested MOS transistor. According to the invention, the accuracy and the test efficiency of the SOA characteristic test result of the MOS transistor can be effectively improved.

Description

technical field [0001] The present application relates to the technical field of performance testing of MOS (metal oxidesemiconductor, metal-oxide-semiconductor) tubes on PCB (Printed Circuit Board) boards, and in particular, to a system and method for testing SOA characteristics of MOS tubes. Background technique [0002] With the development of server technology, more and more functions are integrated in the server, and the power consumption of the server is also increasing accordingly. The MOS tube on the server PCB board will have current input when it is powered on at full load and when the power is abnormally short-circuited. shock. In order to avoid the danger of board burning on the PCB board, it is necessary to ensure that the SOA (Safe Operating Area, safe operating area) characteristics of the MOS transistor are good. Therefore, it is an important technical issue to test the SOA property of the MOS transistor on the server PCB board. [0003] At present, the meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/26
CPCG01R31/2601
Inventor 赵国玲
Owner SHANDONG YINGXIN COMP TECH CO LTD
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