Method for arranging wires for power supply on printed circuit board and printed circuit board
A technology of printed circuit board and wiring method, which is applied in the field of electronics, can solve problems such as line interference, and achieve the effect of providing quality and circuit stability
Active Publication Date: 2015-05-06
HYTERA COMM CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
During the research and practice of the prior art, the inventors of the present invention found that, in this wiring mode of the prior art, when the power supply is switched from the first power supply to the second power supply (that is, from "N1, P1" to " N2, P2"), due to the change of ground current distribution, the lines near the second power supply will be disturbed by the current of the whole machine
Method used
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
[0026] Embodiments of the present invention provide a wiring method for a power supply on a printed circuit board and the printed circuit board. Each will be described in detail below.
[0027] A wiring method for power supply on a printed circuit board, comprising: connecting the negative electrodes of each power supply interface on the printed circuit board to a preset common point, and connecting the common point to the common ground layer of the printed circuit board. Whe...
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The embodiment of the invention discloses a method for arranging wires for a power supply on a printed circuit board and the printed circuit board. According to the embodiment of the invention, a cathode of each power supply interface on the printed circuit board is connected onto a common point which is not positioned on a common ground layer and then the common point is connected on the common ground layer of the printed circuit board, so that the aim that the cathode of each power supply interface is connected to the common ground layer is fulfilled. Not all the cathodes of the power supply interfaces are directly connected onto the common ground layer, however, the cathodes of the power supply interfaces are converged onto the common point and then are connected with the common ground layer, and thus, when the power supply on the printed circuit is switched, the ground current distribution of the integral printed circuit board cannot be changed, i.e. new interference cannot be generated on the printed circuit board due to the switching of the power supply.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a wiring method for a power supply on a printed circuit board and the printed circuit board. Background technique [0002] In the design of portable electronic products, two or more power sources are usually used to switch to power the whole machine, for example, it can be powered by a battery or an external power source, and so on. In order to ensure the electromagnetic compatibility (EMC, Electro Magnetic Compatibility) of the circuit, or reduce the electromagnetic interference (EMI, Electro Magnetic Interference), when designing a printed circuit board (PCB, Printed Circuit Board), the return path of the circuit is often The common ground layer designed to be connected through vias is referred to as the common ground. [0003] For example, taking a three-layer printed circuit board as an example, such as figure 1 As shown, among them, the first layer A of the printed cir...
Claims
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IPC IPC(8): H05K1/02
Inventor 潘启辉李红英高季平
Owner HYTERA COMM CORP