Thermal Dissipation in Wide-bandgap Power Semiconductors
At Aismalibar, we initiated a collaborative effort with the TIEG Research Group to conduct a study to integrate Power Converters into printed circuit boards (PCBs) and optimise their electronic design. As part of this partnership, we explored various base materials for PCBs.
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At Aismalibar, we know that the best way to innovate is to collaborate with experts who contribute their knowledge to develop solutions that address the sector's real needs.
Traditional printed circuit boards (PCBs) commonly employ FR4 as an insulating material. While FR4 is widely used for its electrical insulation properties, it has relatively low thermal conductivity, necessitating a large number of thermal vias to dissipate heat effectively. However, experimental results have demonstrated that our new materials surpass FR4 in thermal conductivity, thereby reducing or eliminating the need for thermal vias.
Aismalibar works with cutting-edge materials with a higher thermal conductivity than FR4. Therefore, replacing FR4 with these materials allows for building PCBs that dissipate heat much better.
Innovative PCB Structures
Eliminating the need for thermal vias frees up more space in the PCB layers. Hence, the design can be optimised, and the electromagnetic compatibility may be greatly improved.
To assess the effectiveness of our new materials across different scenarios, we conducted a study in which we constructed a power converter using both FR4 and the new materials. We evaluated the power converter's performance in two scenarios: without thermal vias and with a few thermal vias.
12% Temperature reduction usingAismalibar Cobritherm Thin Lam 3,2W vs Standard FR4 with Thermal Vias.
Why use Aismalibar Cobritherm Thin Lam?
• PCBs do not need thermal vias to be effective.
• Lighter design: more free space in the PCB.
• Better electromagnetic compatibility.
• Smaller heatsinks.
• Lower temperatures in the components.
• Better heat dissipation: cooler transistors.
Learn more about our gallery of products
We offer a range of high-end copper and metal-clad laminates for the PCB industry, providing the best solutions to reduce the operating temperature of printed circuit boards.