Stacked Magnetic Component Shielding
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Solution Overview
Problem
Conventional magnetic components with shields between coils and magnetic cores experience increased leakage flux, which can reduce electric shielding performance when attempting to prevent displacement currents.
Innovation Solution
A magnetic component design featuring pattern-formed coils and shields on substrates with a stacking structure, including inner and outer peripheral shields with open loop configurations to restrict displacement currents and enhance shielding effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shield is disposed between coils and magnetic core, then electric shielding performance is improved, but leakage flux increases
Solution Approach 1:
The shield is divided into multiple segments (first shield, second shield, third shield) arranged in a stacked configuration. Each segment is pattern-formed on separate substrates and connected through conductive vias, creating a segmented shielding structure that reduces leakage flux while maintaining electric shielding performance.
Solution Approach 2:
The shield transitions from a conventional planar structure to a three-dimensional stacked structure with multiple layers separated by insulating substrates. This dimensional change allows the shield to restrict displacement currents more effectively while reducing leakage flux through the interlayer spacing.
2Reliability
If shield is made continuous to prevent displacement currents, then shielding effect is improved, but magnetic core gap is created
Solution Approach 1:
The continuous shield is segmented into multiple discrete layers (first, second, and third shields) separated by insulating substrates. These segments are connected through conductive vias that pass through the substrates, providing electrical continuity for shielding while preventing magnetic core gap formation.
Solution Approach 2:
Conductive vias serve as intermediary elements connecting the segmented shields through the insulating substrates. These vias provide the necessary electrical continuity for displacement current restriction while the insulating substrates prevent direct magnetic coupling that would create core gaps.
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 effectively restricts displacement currents and improves shielding performance by setting shield potentials to reference potentials, reducing stray capacitance and leakage flux, thereby enhancing the magnetic component's electric shielding capabilities.
Implementation Method 1
The shield is disposed at least one of between different coils in the coils and between one or more of the coils and the magnetic core. Each of the coils and the shield have a stacking structure. The magnetic component can restrict a flow of a displacement current between the coils and can improve a shielding effect.
Data Source
AI summary
A magnetic component includes a plurality of coils, a magnetic core, and a shield. The coils form at least one of a primary coil and a secondary coil to which a voltage corresponding to a voltage induced to the primary coil is induced. The magnetic core penetrates through the coils. The shield is disposed at least one of between different coils in the coils and between one or more of the coils and the magnetic core. Each of the coils and the shield are respectively pattern-formed on substrates. Each of the coils and the shield have a stacking structure.