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Power source load test device

A technology of load testing and power supply, which is applied in the field of power supply load testing equipment, can solve problems such as the inability to meet the requirements of the load slope, and achieve good versatility

Active Publication Date: 2016-07-06
安徽上缆仪表集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The load slope of the current electronic load is generally around 1A / μs, and it is fixed, which cannot meet the needs of some VRMs for a larger load slope.

Method used

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Examples

Experimental program
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Embodiment Construction

[0046] See figure 2 The power load test device 100 of the preferred embodiment of the present invention is used to perform a dynamic load test on a power supply under test. In this embodiment, the present invention will be described with an example in which the tested power supply is a VRM200.

[0047] The power load test device 100 includes a main controller 10, a function generator 20, a pull circuit 30, a current detection circuit 40, an enable circuit 50, a keyboard circuit 60 and a display 70. The function generator 20 is used to generate a square wave signal; the load circuit 30 is used to dynamically change the output current of the VRM200 according to the square wave signal; the current detection circuit 40 is used to cooperate with the main controller 10 to detect the output current Io of the VRM200, namely Load current to obtain the slope of the output current Io; the main controller 10 is used to compare the slope of the output current Io with a preset slope value, an...

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PUM

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Abstract

A power source load test device is used for testing the dynamic load of a tested power source. The power source load test device comprises a main controller, a function generator, a tensile load circuit and a current detection circuit which are electrically connected in sequence, wherein the function generator is used for outputting a square wave signal, the tensile load circuit is used for dynamically changing the output current of the tested power source according to the square wave signal, the current detection circuit is electrically connected to the main controller and is used for cooperating with the main controller to detect the slope of the output current, and the main controller is used for comparing the detected slope of the output current with a preset slope value and accordingly making the function generator adjust the square wave signal according to the comparison result until the slope of the output current is equal to the preset slope value.

Description

Technical field [0001] The invention relates to a power load test device, in particular to a power load test device for a computer VRM. Background technique [0002] In actual use of the voltage regulator module (VRM) of a computer, the load it carries is generally a dynamic load, that is, the load of the VRM changes at any time, and accordingly, the output current of the VRM is also dynamic with the change of the load Variety. For example, when the computer enters certain game programs, the load carried by the VRM will increase significantly, and the output current of the VRM will increase accordingly. [0003] When performing a dynamic test on a VRM, an electronic load is generally connected to the output end of the VRM, and the electronic load changes the output current of the VRM by simulating actual use conditions to realize the dynamic load test on the VRM. When VRM performs dynamic test, under the action of electronic load, the waveform of output current can generally be s...

Claims

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Application Information

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IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 不公告发明人
Owner 安徽上缆仪表集团股份有限公司