Inductor Coil Layout With Vertical Wiring to Prevent Short Circuits
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Solution Overview
Problem
Existing inductor components face issues of potential short circuits and increased size when attempting to increase DC superposition allowable current by reducing the number of coil turns, due to the proximity of extended conductors and their potential for short-circuiting and radial extension.
Innovation Solution
The inductor component design includes a coil with a number of turns equal to or less than 1, featuring first and second vertical wirings connected to pad portions that extend in directions intersecting the coil's inner peripheral surface, preventing short circuits and reducing size by avoiding radial extension of the pad portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of turns of the spiral conductor is reduced to increase DC superposition allowable current, then the magnetic saturation is suppressed, but the inductor component becomes larger in size
Solution Approach 1:
The pad portions are designed with specific local characteristics by extending them in the radial direction, which optimizes the spatial arrangement of conductors. This localized structural modification allows for better current handling capability without proportionally increasing the overall component area, as the extension is targeted specifically where it provides maximum benefit for current distribution and heat dissipation.
2Reliability
If the pad portions extend in the radial direction, then the inner peripheral surface of the coil is approached reducing short circuit possibility, but the manufacturing precision requirements increase
Solution Approach 1:
The pad portions are formed as integral parts of the coil structure during the same manufacturing process, rather than being added as separate components. This preliminary formation ensures proper positioning and alignment are built into the structure itself, reducing the need for subsequent high-precision assembly operations and lowering overall manufacturing precision requirements.
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
This design effectively reduces the possibility of short circuits and minimizes the component's size while maintaining high inductance, allowing for increased DC superposition allowable current and improved connection reliability.
Implementation Method 1
a coil disposed in the element body, and extending along the main surface... The spiral conductor and the extended conductor constitute a coil
Data Source
AI summary
An inductor component includes an element body having a main surface, a coil disposed in the element body, and extending along the main surface, and a first vertical wiring and a second vertical wiring provided in the element body such that respective end surfaces thereof are exposed from the main surface of the element body, and connected to respective ends of the coil. The coil has a coil wiring portion having a first end portion and a second end portion, and extending along a circumferential direction, with the number of turns equal to or less than 1, a first pad portion that is a portion to which the first vertical wiring is connected and that is connected to the first end portion, and a second pad portion that is a portion to which the second vertical wiring is connected and that is connected to the second end portion.