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

A printed circuit board and printed circuit technology, applied in the direction of reducing electrical interference, electrical components, instrument parts, etc., can solve problems such as cost loss, abnormal sound, and inelasticity

Inactive Publication Date: 2003-06-18
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0036] Since the noise interference (noise interference) must be affected by a complete loop (loop), the present invention mainly avoids the noise loop by the tree branch technology of the ground wiring of the printed circuit board, so that the problem of noise interference can be solved, and by the present invention The technology does not need to synchronize the operating frequency of each power conversion module, so the operating frequency of different power conversion modules can be adjusted according to actual needs.

[0037] figure 1 A circuit block diagram of a power supply system with two sets of power conversion modules with different operating frequencies for applying the printed circuit board grounding wiring technology of this case. Such as figure 1As shown, the present invention has a multi-output power supply system mainly including a first power conversion module 1 and a second power conversion module 2, which respectively convert an input voltage into a first ...

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Abstract

A method for eliminating crosstalking interference and noise of PCB by grounding wires is suitable for the system composed of the first and the second power converter modules and PCB. It includes such steps as connecting all grounding pins of the first module to the weld padson ground layer of PCB, connecting all the weld pads to the first node on ground layer, connecting all grounding pins of the second module to the weld pads on grounding layer of PCB, connecting all the weld pads to the second node, connecting the first and the secnod nodes to a common node, and connecting the common node to the common grounding point on grounding layer of PCB.

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...

Claims

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Application Information

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IPC IPC(8): G12B17/02H04B15/02H05K9/00
Inventor 欧阳志宏赖慧娟林金成
Owner DELTA ELECTRONICS INC
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