Floating Core Assemblies

Today’s high-performance ASICs, GPUs, HBM modules, and line card components often have different heights, power loads, and thermal contact requirements within the same compact system. Floating Core Assemblies help solve these challenges by using independently compliant contact points that maintain consistent pressure across uneven component surfaces. These designs can integrate vapor chambers, heatpipes, zipper fins, and spring-loaded structures to improve heat spreading, reduce thermal gaps, and support reliable cooling for multiple chips at once. Heatscape’s engineering team can support these designs with custom mechanical design and DFM, finite element analysis, and CFD thermal analysis for complex PCB layouts, high-density electronics, networking hardware, and advanced computing applications.

Floating Core Heatsink Concept

Advanced Floating Core Heatsink

Floating Core Heatsink Assembly with Embedded Heatpipes

Customer Designs and Fabricated Inverted Floating Core Heatsink

Floating-core Concept Utilizing Vapor Chamber

Low Profile Heatsink

Dual Floating Core Heatsink Concept

Floating Core Heatsink with Low-profile Zipper Fins

Floating Core Heatsink Concept

Floating-core concept utilizing vapor chamber to cool the main die, with a heatpipe positioned adjacent separately cool HBM modules. This unique concept allows for thermal isolation between the main high-powered ASIC and surrounding on-chip components.

Advanced Floating Core Heatsink

Advanced floating core heatsink, known as Monolith design, that sits across an entire line card with independently floating cores to compensate for the unique heights of each component.

Floating Core Heatsink Assembly with Embedded Heatpipes

Floating core heatsink assembly with embedded heatpipes. This heatsink is designed for cooling side by side ASICs and surrounding memory modules, all with 1 single heatsink.

Customer Designs and Fabricated Inverted Floating Core Heatsink

Customer designs and fabricated inverted floating core heatsink, which is hard-mounted to the board via sheetmetal shroud. Built in springs apply mounting force, which thermal gel compound compensates for varying heights of packages.

Floating-core Concept Utilizing Vapor Chamber

Low Profile Heatsink

Low profile heatsink that combines zipper fins with a floating vapor chamber design. Based on the thermal gel layout on the base, this heatsink can make contact with dozens of peripheral components in addition to the main high-powered ASIC.

Dual Floating Core Heatsink Concept

Large dual floating-core concept that integrates two vapor chambers to cool high-powered ASICs, which also making contact with other components. Cowl duct integrated into the design to draw air into the fins.

Floating Core Heatsink with Low-profile Zipper Fins

Floating core heatsink with low-profile zipper fins, along with vapor chamber. This high-performance concept cools the high-powered ASIC along with multiple touch points surrounding it.

Floating Core Heatsink Concept

Advanced Floating Core Heatsink

Floating Core Heatsink Assembly with Embedded Heatpipes

Customer Designs and Fabricated Inverted Floating Core Heatsink

Floating-core Concept Utilizing Vapor Chamber

Low Profile Heatsink

Dual Floating Core Heatsink Concept

Floating Core Heatsink with Low-profile Zipper Fins

Frequently Asked Questions

When should engineers choose a floating core heatsink instead of a standard one-piece heatsink?

Engineers should choose a floating core heatsink when multiple components have different package heights, uneven surfaces, or tight mounting tolerances. Unlike a standard one-piece heatsink, a floating core design can maintain more consistent contact across several heat sources while reducing thermal gaps and mechanical stress.

Why are floating core assemblies used in complex PCB designs?

Floating core assemblies are used in complex PCB designs to cool multiple components with different heights on the same board. They maintain proper contact with each component, preventing thermal gaps and uneven heat distribution. This improves overall cooling efficiency, enhances system reliability, and supports high-performance electronic applications.

How does a floating core design improve cooling performance?

A floating core design improves cooling performance by applying consistent pressure to each component independently. This reduces air gaps between surfaces and enhances thermal conductivity. As a result, heat is transferred more efficiently from each component to the heatsink, leading to better overall thermal management.

Can a floating core heatsink cool multiple chips at the same time?

Yes, floating core heatsinks are specifically designed to cool multiple chips simultaneously, including ASICs, GPUs, and memory modules. Each floating core adjusts independently to ensure proper contact with each component. This allows balanced heat dissipation and prevents overheating across the entire system.

What technologies can be integrated into floating core assemblies?

Floating core assemblies can integrate advanced cooling technologies such as vapor chambers, heatpipes, and high-density fin structures. These combined solutions improve heat spreading and enhance overall thermal performance. Integration enables more efficient cooling in compact and high-power system designs.

Are floating core assemblies suitable for tight tolerances or uneven surfaces?

Yes, floating core assemblies are ideal for systems with tight tolerances or uneven component surfaces. The floating mechanism compensates for height variations without applying excessive stress on components. This ensures reliable contact, prevents damage, and maintains consistent thermal performance.

Where are floating core heatsinks commonly used?

Floating core heatsinks are commonly used in data centers, networking hardware, and high-performance computing systems. These applications often involve multiple high-power components on a single board. They are essential for maintaining stable temperatures, preventing thermal imbalance, and ensuring reliable system operation under heavy workloads.

What is a heatsink calculator?

A heatsink calculator helps estimate thermal performance by analyzing heat dissipation, airflow, and material properties to determine optimal cooling solutions.

Floating Core Assemblies