Inductor Array Chip with Varying Coil Section Sizes
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Solution Overview
Problem
Existing inductor array chips face challenges in producing multiple types of inductors with different numbers of stacked coil-shaped conductors, leading to structural defects such as cracks during firing, making it difficult to achieve stable and efficient DC-DC converters that can output varying voltages and currents.
Innovation Solution
The inductor array chip features a magnetic laminated body with stacked magnetic layers and inductors having coil-shaped conductors with varying section sizes and via-hole conductors, allowing for adjustable inductance and reduced structural defects by minimizing unevenness in conductive agent distribution during firing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plurality of types of inductors whose number of stacked coil-shaped conductors differs from one another are arranged within a single inductor chip, then the inductance characteristics of each converting unit can be adjusted, but a structural defect (a crack or the like) is likely to occur within a magnetic laminated body at the time of firing
Solution Approach 1:
The patent applies local quality by making the section sizes of coil-shaped conductors differ among inductors instead of varying the number of stacked conductors. Each inductor has coil-shaped conductors with specific section sizes tailored to its required inductance value, while maintaining uniform stacking across all inductors. This localized differentiation in section size achieves diverse inductance characteristics without compromising structural integrity during firing.
2Adaptability or versatility
If a plurality of types of inductors whose number of stacked coil-shaped conductors differs from one another are arranged within a single inductor chip, then different inductance values can be achieved, but it is difficult to produce with good stability
Solution Approach 1:
The patent changes the parameter of coil-shaped conductor section size instead of varying the number of stacked conductors. By adjusting the section size parameter of conductors in different inductors, the patent achieves diverse inductance values while maintaining a uniform stacking structure. This parameter change approach simplifies the manufacturing process and improves production stability, as it eliminates the complexity of controlling variable stacking numbers.
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 configuration enables the production of inductor array chips with reduced structural defects and improved stability, allowing for efficient and stable operation of DC-DC converters with optimized inductance characteristics for different output types.
Implementation Method 1
The via-hole conductor electrically connects the plurality of coil-shaped conductors
Implementation Method 2
A DC-DC converter has been known as elements having a function of outputting power at a voltage different from input power
Data Source
AI summary
An inductor array chip includes a magnetic laminated body and a plurality of inductors. The magnetic laminated body includes a plurality of stacked magnetic layers. The plurality of inductors are arranged inside the magnetic laminated body. The inductance of a first inductor differs from the inductance of a second inductor. The inductors include a plurality of coil-shaped conductors and via-hole conductors. The plurality of coil-shaped conductors are arranged between the magnetic layers. The via-hole conductors electrically connect the plurality of coil-shaped conductors. The inductors include a plurality of inductors in which the section sizes of the coil-shaped conductors differ from one another.