Thermal Test Vehicle Substrate Design for High-Power IC Simulation
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Solution Overview
Problem
Current Thermal Test Vehicles (TTVs) are unable to properly simulate the thermal characteristics of high-power integrated circuits, such as those consuming 500 watts, necessitating the development of improved apparatuses and methods for simulating and replicating thermal outputs to effectively test cooling and heat-mitigation solutions.
Innovation Solution
A TTV comprising a substrate that functions as both an electrical insulator and thermal conductor, coupled with resistive elements extending across its dimensions, which are heated by electric current to generate and transfer thermal energy, allowing for accurate simulation of integrated circuit thermal characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional TTV designs are used, then manufacturing simplicity is maintained, but thermal simulation accuracy for high-power integrated circuits deteriorates
Solution Approach 1:
The TTV employs a composite structure combining a thermally conductive substrate (such as aluminum nitride or beryllium oxide) with electrically insulating properties, and resistive heating elements made from conductive materials (such as nickel-chromium alloys). This composite approach enables simultaneous achievement of accurate thermal simulation, electrical insulation, and controlled heat generation, resolving the contradiction between simulation accuracy and manufacturing simplicity.
2Adaptability or versatility
If the TTV substrate provides both electrical insulation and thermal conduction, then thermal simulation capability improves, but material selection constraints increase
Solution Approach 1:
The substrate is designed to perform multiple functions simultaneously: providing thermal conduction pathways for accurate heat transfer simulation, offering electrical insulation to prevent current leakage, and serving as a mechanical support structure. This multi-functionality approach enables a single component to meet diverse requirements, improving adaptability while managing material selection through established ceramic materials like aluminum nitride that exhibit both thermal conductivity and electrical insulation.
3Stability of the object's composition
If resistive elements extend across the substrate, then thermal output uniformity improves, but manufacturing precision requirements increase
Solution Approach 1:
The resistive heating elements are strategically positioned and dimensioned to extend across major portions of the substrate surface, creating localized high-density heating zones that collectively produce uniform thermal output. The resistive elements may be configured in specific patterns (such as interdigitated combs or distributed traces) that ensure even heat distribution while accommodating manufacturing tolerances through design flexibility in element spacing and geometry.
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
Enables computing equipment manufacturers to assess the effectiveness of cooling and heat-mitigation solutions by simulating the thermal performance of high-power integrated circuits, ensuring adequate thermal management during operation.
Implementation Method 1
one or more resistive elements coupled to the substrate, wherein the resistive elements extend across a majority of at least one dimension of the substrate
Implementation Method 2
a substrate that serves as both (A) an electrical insulator that resists electrical energy and (B) a thermal conductor that conducts thermal energy
Data Source
AI summary
A disclosed Thermal Test Vehicle (TTV) for simulating the thermal characteristics of a certain integrated circuit may include (1) a substrate that serves as both (A) an electrical insulator that resists electrical energy and (B) a thermal conductor that conducts thermal energy and (2) one or more resistive elements coupled to the substrate, wherein the resistive elements extend across a majority of at least one dimension of the substrate. Various other apparatuses, systems, and methods are also disclosed.