Abstract:
An assembly (10) for coupling thermally a thermoelectric generator (TEG (12)) to an exhaust manifold of an internal combustion engine. The assembly (10) includes a first heat exchanger (14) configured to guide exhaust gas (16) of an internal combustion engine past an opening (23) defined by the first heat exchanger (14), and a heat sink (50) configured to couple thermally the TEG (12) to the exhaust gas (16) and fluidicly seal the opening (23). The assembly (10) is configured so the heat sink (50) is directly exposed to the exhaust gas (16) so that heat is efficiently transferred from the exhaust gas (16) to the TEG (12).
Abstract:
The present invention provides a high performance polymer-base material (10, 20, 30) capable of dissipating transient thermal energy generated by an electronic module, such as a heat-generating power device. The methods of the present invention involve adding a suitable thinner to reduce the viscosity and increase the volume of a polymer-base matrix material (12) so that a large amount of thermal absorbing particles (14, 22, 25) may be added. The final cured product may have a filler content of more than 80 weight %. Further, the present invention provides a new and reduced cost formulation of a polymer-base thermal transient suppression material (30) containing organic wax particles.
Abstract:
A fluid-cooled electronic assembly including a base having a fluid inlet and a fluid outlet therein, a cap attached to the base to form a fluid containment chamber therebetween, wherein the fluid containment chamber is in fluid communication with the fluid inlet and the fluid outlet, and an electronic device disposed within the fluid containment chamber and connected to the base, the electronic device having a plurality of microchannels adapted to receive a cooling fluid flow therethrough, wherein the cap is shaped to direct a fluid flow from the fluid inlet to the microchannels such that a pressure drop between the fluid inlet and the fluid outlet is reduced.
Abstract:
A low cost transistor package (10) is provided for high power applications. The package provides high thermal conductivity and dissipation for a silicon transistor die (12), high current carrying capability and isolation, and high power and thermal cycle life performance and reliability. A dielectric layer (16) is fixed to a silicon transistor die (12), for coupling to a heat conducting buffer (26) and attachment to a substrate (24). The dielectric layer (16) is fixed to the die (12) by growing the dielectric layer (16), depositing the dielectric layer (16), or applying the dielectric layer (16) using a plasma spray. In an aspect, a conductive layer (14) is formed to the silicon transistor die (12) by a thermal or kinetic spray process, and the dielectric layer (16) is applied to the conductive layer (14). The dielectric layer (16) may also be established either before or after the transistor fabrication. Electrical and thermal interconnects are advantageously positioned from opposite sides of the silicon transistor die (12).
Abstract:
A stacked array (10/40) of channeled semiconductor chips (12a-12d) defining a power electronic circuit is mounted in a sealed container (50) provided with inlet and outlet passages (66, 68) for liquid coolant. Leadframe terminals (58a-58f, 64a-64b, 70) supported by the container (50) engage selected terminals (14, 16, 18) of the semiconductor chips (12a-12d) and form leads for mounting the container (50) on a circuit board having electrical and fluid interconnects.
Abstract:
A surface mountable axial leaded component (100) including a component body (102), a first component lead (104A) and a second component lead (104B). The first component lead (104A) extends from a first end of the component body (102) and a second component lead (104B) extends from a second end of the component body (102) that is opposite the first end. A portion of the first and second component leads (104A,104B) is formed in a loop and a diameter of the loop is at least equal to the diameter of the component body (102). The loop may be formed as a circular loop, an elliptical loop, a polygon loop, a square loop or rectangular loop, among other loop configurations. When formed as a circular loop, the loop may include a flat segment.