Side-Electrode Inductor Layout for Higher PCB Mounting Density
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Solution Overview
Problem
The mounting efficiency of inductors on printed circuit boards is low, necessitating improvements in design and manufacturing processes.
Innovation Solution
An inductor design featuring a magnetic core with a rectangular parallelepiped shape and a coil portion intersecting one side surface, along with electrodes connected to both ends of the coil and protruding from another side surface, allowing for efficient mounting on a printed circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the inductor uses a conventional structure with electrodes extending from multiple sides, then the electrical connection is achieved, but the mounting efficiency is low and the surface area required is large
Solution Approach 1:
The patent merges both electrodes (first and second electrodes) to extend from the same side surface of the magnetic core, rather than having them extend from opposite sides. This consolidation reduces the mounting footprint and improves mounting efficiency by allowing both electrical connections to be made from a single side of the PCB.
Solution Approach 2:
The patent repositions the electrodes to extend from a side surface of the magnetic core rather than from the top and bottom surfaces. This dimensional reconfiguration allows the inductor to be mounted with a reduced surface area occupation while maintaining proper electrical connections through the coil portion.
2Productivity
If the coil portion is arranged with the coil axis parallel to the side surfaces, then the magnetic core structure is simple, but the wiring efficiency and mounting density are reduced
Solution Approach 1:
The patent employs an asymmetric arrangement where the coil axis intersects the side surfaces at an angle rather than being parallel to them. This asymmetric positioning, combined with the electrodes extending from the same side, optimizes the wiring efficiency and mounting density without requiring complex coil winding patterns.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances mounting efficiency by reducing the surface area required and concentrating input and output terminals on one side of the magnetic core, improving overall mounting density and wiring efficiency.
Implementation Method 1
Inductors, which are passive elements that store electric energy as magnetic energy
Data Source
AI summary
An inductor includes: a magnetic core; a coil portion; and a first electrode and a second electrode. The magnetic core includes a bottom surface, a top surface, a first side surface, a second side surface, a third side surface, and a fourth side surface. The coil portion is arranged with a coil axis intersecting the first side surface and including one end and an other end respectively located at both ends of a conductive path of the coil portion. One end and the other end are in contact with the third side surface and are spaced apart from each other on the third side surface. The first electrode is connected to the one end at the third side surface and is arranged along the third side surface. The second electrode is connected to the other end at the third side surface and is arranged along the third side surface.