Method and system for eliminating noise and its disturbance by printing circuit board ground wiring

Abstract

A method for eliminating noise interference and noise by using printed circuit board ground wiring, applied to a circuit system with multiple groups, the circuit system has a first power conversion module, a second power conversion module and a printed circuit board, wherein the first power conversion The module and the second power conversion module respectively have a first ground pin group and a second ground pin group, including the step of: connecting each pin of the first ground pin group of the first power conversion module to the ground plane of the printed circuit board and connect each solder point to the first node on the ground plane of the printed circuit board, and each pin of the second ground pin group of the second power conversion module is connected to each solder joint on the ground plane of the printed circuit board point, connect each solder joint to the second node on the ground plane of the printed circuit board; connect the first node and the second node to a common node, and connect the common node to the common ground pad on the ground plane of the printed circuit board .

Description

technical field [0001] The present invention relates to a method for eliminating noise interference and noise by using printed circuit board ground wiring (PCB Ground Plan Layout), in particular to a method for using printed circuit board ground wiring (PCB Ground Plan Layout) in a power supply system with multiple outputs. Layout) to stabilize the power supply system and eliminate noise interference and noise. Background technique [0002] With the development of science and technology, various electronic products can be seen everywhere. However, in these electronic products, a printed circuit board (Printed Circuit Board, PCB) is the core of the electronic product. The normal operation of the electronic components on the printed circuit board is the main factor for the normal operation of electronic products, but there are usually signals of different frequencies between circuits and systems, and when there are different frequencies between the signals, the circuit and Th...

AI Technical Summary

Problems solved by technology

[0007] 1. If multiple sets of output operating frequencies are different, the power conversion modules will interfere with each other and cause instability

[0008] 2. If the operation frequency of multiple sets of output is asynchronous, abnormal sound will be generated due to frequency difference

[0009] 3. If multiple groups of output operating frequencies are synchronized, the operating frequency of all power conversion modules will be forced to be the highest one, so not only is there no flexibility in application, but the higher the frequency, the higher the cost, which will inevitably cause cost losses.

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