Configurable Heat Sink Grounding for EMC Optimization
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Solution Overview
Problem
Conventional heat sinks for electronic devices often interfere with electromagnetic compatibility (EMC) due to fixed grounding points, limiting their adaptability to various applications and potentially degrading electronic performance.
Innovation Solution
A heat sink with selectively movable contact pins that can be positioned to contact or not contact ground conductors on a circuit board, allowing for customizable grounding points to optimize EMC in different applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional heat sinks use fixed grounding points, then manufacturing is simplified, but electromagnetic compatibility is degraded
Solution Approach 1:
The patent applies the dynamics principle by making the grounding points adjustable rather than fixed. The heat sink includes multiple contact pins that can be selectively engaged or disengaged from ground pads on the circuit board, allowing the grounding configuration to be dynamically changed to optimize electromagnetic compatibility for different applications while maintaining manufacturing simplicity through a standardized interface design.
2Device complexity
If conventional heat sinks have fixed grounding configuration, then device complexity is reduced, but adaptability to different applications is limited
Solution Approach 1:
The patent implements adjustability by providing multiple contact pins that can be selectively engaged with different ground pads on the circuit board. This allows the grounding configuration to be adapted to different electromagnetic compatibility requirements across various applications without increasing the fundamental device complexity, as the additional contact pins use standardized interfaces and mounting mechanisms.
Solution Approach 2:
The heat sink design incorporates multiple contact pins that can serve different grounding functions depending on the application. The same heat sink component can be configured with different grounding patterns to suit various electromagnetic compatibility requirements, making it a universal solution that adapts to multiple applications rather than requiring different heat sink designs for different uses.
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 solution enables flexible adjustment of grounding points to achieve acceptable EMC levels, reducing electromagnetic interference and improving the performance of electronic devices by allowing for tailored heat sink and circuit board combinations.
Implementation Method 1
Conventional heat sinks are frequently fabricated from a thermally conducting metallic material, such as copper or aluminum
Data Source
AI summary
Various heat sink/circuit board combinations are disclosed. In one aspect, an apparatus is provided that includes a heat sink and plural contact pins coupled to the heat sink. Each of the contact pins is operable to selectively contact at least one of plural ground conductors of a circuit board. A given contact pin may be selectively moved relative to the heat sink to contact or not contact one of the ground conductors to provide the capability of controlling a number and location of ground points of the heat sink.