Current characteristic detection method and system of direct-current power supply and related components

Abstract

The invention discloses a current characteristic detection method for a direct-current power supply. The method comprises the steps of carrying out the pad current regulation operation after a voltageregulation module VRM is disposed at a pad, so as to enable the current of a pad region to be uniformly distributed, and setting load information and performing simulation according to a preset simulation mode to obtain a detection result of the current characteristics of the direct-current power supply. By applying the scheme provided by the invention, the phenomenon of edge concentration of thecurrent in the pad area is avoided, a more accurate detection result of the current characteristics of the direct-current power supply is obtained, and the situation of misjudgment is avoided. The invention further provides a current characteristic detection system of the direct-current power supply and related components, and the current characteristic detection system has corresponding technical effects.

Description

technical field [0001] The invention relates to the technical field of PCB design, in particular to a current characteristic detection method, system and related components of a DC power supply. Background technique [0002] The focus of power supply DC simulation is the current characteristics after the current passes through the PCB circuit, including the generated voltage drop, current density, via current, electrothermal characteristics, etc. The current characteristics can be detected through DC simulation, and then the laying of the power plane can be improved according to the detection results, the layout setting of the VRM can be improved, and the electrical stability of the system can be improved. In the DC simulation, you can see many high current density points. If these points are not optimized and improved, it may cause serious problems such as burning the board, local overheating, and short circuit after the actual boarding. [0003] However, in the current si...

AI Technical Summary

Problems solved by technology

During the DC simulation, you can see many high current density points. If these points are not optimized and improved, it may cause serious problems such as burning the board, local overheating, and short circuit after the actual boarding.

[0003] However, in the current simulation method, there is a problem of misobserving the point, that is, it is not a problem point, but it is misidentified as a hot spot, resulting in the need to sacrifice some other parts The electrical plane to improve this point, while weakening the stability of other parts of the system

In view of this situation, in practical applications, some simulation engineers will know that some hotspots do not constitute a problem out of experience, so they will ignore some simulation hotspots by themselves, but these ignored simulation hotspots may indeed have no problems, or may It is the wrong judgment of the simulation engineer. The misjudgment under low current conditions is acceptable, but once the hot spot is located at the power supply end of low-voltage and high-current loads such as CPU, it will lead to serious consequences.

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