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A fast layout method of a decoupling capacitor in a PCB

A technology of decoupling capacitors and layout methods, applied in CAD circuit design, electrical digital data processing, special data processing applications, etc., can solve problems such as rework, affecting work efficiency, easy placement errors, etc., to avoid reverse placement and save layout. time, improved accuracy and productivity

Active Publication Date: 2019-02-12
SHAANXI QIANSHAN AVIONICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, decoupling capacitors are usually laid out at the end. There are a large number of capacitors, and there are differences in capacitance values. Can not meet the current efficient and fast PCB design requirements

Method used

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  • A fast layout method of a decoupling capacitor in a PCB

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Embodiment Construction

[0018] In order to make the objects, methods and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples. In this embodiment, the EDA (Electronics Design Automation) software selects CR-5000 software from ZUKEN Company. Specific steps are as follows:

[0019] Step 1. First run CR-5000 to open the schematic diagram, click Net List Processor to generate netlist information, import component information into the PCB design environment, set the number of PCB layers and rules, and open the PCB design environment;

[0020] Step 2. Draw the PCB frame in the PCB design environment, stack all the components on the periphery of the frame, and use the Move Component function to place the components except the coupling capacitor according to the principle properties;

[0021] Step 3. Check the schematic diagram to confirm that the power supply of the decoupling capacitor is divided into +3.3V, +5V,...

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Abstract

The invention belongs to the field of PCB design and relates to a fast layout method of a decoupling capacitor in a PCB. The method of the invention mainly utilizes the Set Net Display Color functionof an EDA software to change the color of signals at both ends of the decoupling capacitor, and then utilizes the Lowlight function to illuminate both ends of the decoupling capacitor, and finally quickly places the decoupling capacitor according to the power supply requirement of the device. The method can effectively avoid decoupling capacitor placement errors, and can improve the design accuracy and design efficiency, thereby reducing the design occupancy time.

Description

technical field [0001] The invention relates to the field of PCB (Printed Circuit Board, Chinese name is printed circuit board) design, in particular to a rapid layout method for decoupling capacitors in the PCB. Background technique [0002] During the PCB design process, a complex PCB contains a large number of various types of components, and engineers need to spend a lot of time to layout according to the principle properties and PCB size. The traditional layout method is that engineers find the corresponding components in the PCB according to the corresponding layout rules, "first big and then small, first difficult and then easy, unit circuit, core components", and then move to the corresponding position. However, decoupling capacitors are usually laid out at the end. There are a large number of capacitors, and there are differences in capacitance values. It cannot meet the current efficient and fast PCB design requirements. Contents of the invention [0003] The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/39
Inventor 刘显丰孙玉芹
Owner SHAANXI QIANSHAN AVIONICS
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