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Polara
Enerdyne Solutions Polara™
heat spreader is a revolutionary advance in ambient
cooling.
Polara’s excellent performance is due to the
novel use of Peltier Assisted Conduction (PAC). Heat
transport occurs with two thermal mechanisms: Passive
thermal conduction and active heat pumping. This
pumping comes from the use of thermoelectrics (the
Peltier Effect) or the transport of heat via electrons
caused by an electrical current between two dissimilar
materials.
Unlike conventional Peltier heat pumps, Polara is
designed as a heat spreader: To operate efficiently at
equal to or greater than ambient temperature.
Therefore, materials which possess relatively high
thermoelectric properties and high thermal
conductivities are utilized.
Polara
offers a unique combination of features and benefits:
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CTE matching Silicon or Gallium Arsenide (GaAs) allowing direct eutectic attach
Polara is a semiconductor-based product,
and can be built with a Coefficient of Thermal
Expansion (CTE) to closely match the chip to be
cooled. This allows the use of economical and
conventionally deployed solders with high thermal
conductivities, and eliminates the need for
thermally resistive TIMs.
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Electrical isolation, grounding and EMI shielding
Polara can be readily customized to the specific
needs of your application, including metallization
or the addition of dielectric layers.
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Discrete, package or die-level integration options
Polara offers flexible deployment options. A
discrete component has the simplest design-in
process, and can be solder-attached for excellent
performance. Polara can also replace the
integrated heat spreader in a package. For highest
performance Polara Thermal Raceways technology is
integrated directly into the chip design.
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Anisotropic heat transfer using Thermal Raceways™ for maximum cooling
efficiency
Most hot electronic components
are not uniform, but instead have localized areas,
or hotspots, of greater heat-flux density.
Conventional heat spreaders or other thermal
solutions cannot take advantage of this, and so
waste performance on relatively cool regions of
the chip in order to handle the hottest areas.
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Hot spot mitigation
performance equivalent to diamond composite heat
spreaders
Thermal Raceways are powerful
heat spreader features unique to Polara. Using a
revolutionary implementation of the Peltier
effect, Enerdyne Solutions has created a device
that actively pumps heat from hotter to cooler
regions. These heat-transporting raceways are both
highly efficient and have such incredibly high
effective thermal conductivity that they provide
hot spot temperature reductions previously
possibly only with costly diamond composites.
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Smart Spreading™
with passive thermal conduction and active heat
pumping
Enerdyne has the industry's only
true anisotropic heat spreader, allowing die-level
customization of the solution, and hence, better
overall performance. Learn more technical detail
about Enerdyne's Smart Spreader by downloading the
PDF:
"Cooling Microelectronics with Thermal Raceways",
a paper presented at the IMAPS Advanced Technology
Workshop Thermal 2003.
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