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Power load test device

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

Active Publication Date: 2018-11-16
唐山尚新融大电子产品有限公司
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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

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Embodiment Construction

[0046] see figure 2 , the power supply load testing device 100 according to the preferred embodiment of the present invention is used to perform a dynamic load test on a power supply under test. In this implementation manner, the present invention is described by taking the power supply under test as an example of a VRM200.

[0047] The power load testing device 100 includes a main controller 10 , a function generator 20 , a load circuit 30 , a current detection circuit 40 , an enabling 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, thereby obtaining the slope of the output current Io; the main controller 10 is used to compare the slope...

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PUM

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Abstract

A power supply load test device is used to carry out the dynamic load test on a tested power supply, and comprises a main controller, a function generator and a current detection circuit which are connected orderly and electrically. The function generator is used to output a square ware signal, a load circuit is used to change an output current of the tested power supply dynamically according to the square wave signal, the current detection circuit is also electrically connected with the main controller and is used to match the main controller to detect the slope of the output current, and the main controller is used to compare the detected slope of the output current with a preset slope and correspondingly control the function generator to adjust the square wave signal according to a comparison result until the slope of the output current is equal to the preset slope.

Description

technical field [0001] The invention relates to a power supply load test device, in particular to a power supply load test device for computer VRM. Background technique [0002] In the actual use of the voltage regulator module (Voltage Regulator Module, VRM) of the computer, the load it carries is generally a dynamic load, that is, the load of the VRM changes at any time, and correspondingly, the output current of the VRM also changes with the change of the load. is dynamic. For example, when the computer enters some game programs, the load on the VRM will increase significantly, and accordingly the output current of the VRM will also increase significantly. [0003] When performing a dynamic test on the 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 usage conditions to implement a dynamic load test on the VRM. When the VRM performs dynamic testing, under the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 不公告发明人
Owner 唐山尚新融大电子产品有限公司