Power Supply Board Layout for High-Current PCB Routing
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Solution Overview
Problem
Conventional printed circuit boards (PCBs) with integrated designs face limitations in space and cost due to the need for through-current routing of large currents, leading to complex designs and high costs when supporting large current requirements.
Innovation Solution
A power supplying apparatus is connected directly to circuit boards, acting as a lining board to supply power and protect the boards, reducing the need for additional lining boards and fastening screws, and incorporating power source and ground plane structures with insulation to prevent short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a PCB with integrated design is used to supply power to functional circuits, then the circuit board can be compact and integrated, but the PCB cannot support large current requirements due to limited space for current routing
Solution Approach 1:
The invention separates the power supply function from the signal processing function by dividing the circuit board into a main circuit board and a power supply circuit board. The power supply circuit board is specifically designed to handle large currents and is connected to the main circuit board, allowing the main board to focus on signal processing while the power board handles power distribution. This segmentation resolves the contradiction by enabling large current support without complicating the main PCB design.
Solution Approach 2:
The invention transitions from a two-dimensional PCB routing problem to a three-dimensional spatial arrangement by using a separate power supply circuit board positioned adjacent to the main circuit board. This dimensional change allows large current paths to be established through spatial proximity and direct connections rather than being constrained by the limited two-dimensional routing space on a single PCB, thus supporting large currents without increasing PCB design complexity.
2Quantity of substance
If a PCB with integrated design is used, then integration is achieved, but the space and cost are limited when supporting large current through-current routing
Solution Approach 1:
The invention divides the circuit board system into two separate boards: a main circuit board for signal processing and a power supply circuit board for power distribution. This segmentation allows the power supply board to be optimized specifically for large current handling with appropriate trace widths and copper areas, while the main board maintains its compact design for signal processing, thus achieving high current carrying capacity without unnecessarily increasing the total area of the main circuit board.
Solution Approach 2:
The power supply circuit board serves multiple functions: it provides power to the main circuit board, handles large current paths, and can be positioned to provide structural support. This multi-functionality allows the system to achieve large current carrying capacity without proportionally increasing the area, as the power board performs multiple roles simultaneously.
3Reliability
If an independent lining board is added to protect circuit boards, then protection against collision and damage is improved, but the device complexity and cost increase
Solution Approach 1:
The power supply circuit board is designed to serve dual purposes: providing power supply functionality and acting as a protective lining board for the main circuit board. By positioning the power supply board adjacent to the main board, it provides structural support and protection against collision and damage. This multi-functionality eliminates the need for a separate independent lining board, thus improving reliability without increasing device complexity or component count.
Solution Approach 2:
The invention merges the protection function with the power supply function by making the power supply circuit board serve as both the power source and the protective lining board. This combination consolidates multiple functions into a single component, reducing the total number of parts needed and simplifying the overall device structure while maintaining adequate protection for the circuit boards.
Data Source
AI summary
This application provides an electronic device includes the power supplier and a plurality of circuit boards. The power supplier is located below the plurality of circuit boards, each circuit board is connected to the power supplier to obtain power from the power supplier.