Dual Layer PCBA Optical Module Thermal Management
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Solution Overview
Problem
Current optical modules face challenges in effectively dissipating heat generated by high-power chips, leading to increased power consumption and potential component failure due to inadequate heat management.
Innovation Solution
A dual layer printed circuit board assembly (PCBA) structure with a bent layer of thermal superconducting medium and insulating layers, where the thermal superconducting medium is thermally connected to power components and casings, facilitating efficient heat diffusion and dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-power chips are used to increase data transfer rates, then productivity is improved, but temperature increases causing reliability to deteriorate
Solution Approach 1:
A thermal superconducting medium is introduced as an intermediary substance between the power components and the casing. This medium has superior thermal conductivity to directly conduct heat away from the high-power chips, preventing temperature buildup while allowing the chips to operate at high performance levels
Solution Approach 2:
The optical module is divided into multiple layers with a dual-layer PCBA structure. Power components are segregated onto specific layers and thermally connected to the casing through the thermal superconducting medium, allowing independent thermal management of high-power components while maintaining overall system productivity
2Reliability
If heat dissipation structures are added to manage temperature, then reliability is improved, but device complexity increases
Solution Approach 1:
The casing serves multiple functions: it provides mechanical protection for the optical module components and simultaneously acts as a heat dissipation structure. The thermal superconducting medium enables the casing to function as both a structural element and a thermal management component, reducing overall device complexity
Solution Approach 2:
The thermal management function is merged with the existing casing structure rather than adding separate cooling components. The thermal superconducting medium bridges the power components and casing, combining thermal conduction with the casing's protective function into a unified structure
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 dual layer PCBA structure enhances heat dissipation efficiency, reducing power consumption and preventing component failure by effectively transferring heat away from high-power components, thereby improving the stability of the optical module.
Implementation Method 1
Heat generated by the power components is transferred through the at least one insulating layer to the layer of thermal superconducting medium where the heat is diffused horizontally and transferred to at least one of the first casing and the second casing
Data Source
AI summary
An optical module with a dual layer printed circuit board assembly (PCBA) structure. The optical module includes a first casing and a second casing, and a first PCBA board and a second PCBA board located between the first casing and the second casing, a plurality of power components arranged on opposing surfaces of at least one of the first PCBA board and the second PCBA board, a layer of thermal superconducting medium of a bent arrangement including a first thermal conducting part and a second thermal conducting part arranged opposite to each other, the first thermal conducting part being thermally connected to the power component, and the second thermal conducting part being thermally connected to at least one of the first casing and the second casing, and at least one insulating layer arranged between the layer of thermal superconducting medium and the power components.