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 thermal-protection apparatus (10) disposed in a vehicle cabin or storage compartment includes a housing (16) enveloping a chamber (26) in which a thermally-sensitive consumer electronic device (18) is received, a thermoelectric module (20) mounted in a wall (16b) of the housing (16), and a remote electronic controller (12) and power source (14) coupled to the housing (16) via an electrical cable (24) for activating the thermoelectric module (20), and optionally the consumer electronic device (18), in a manner to prevent the temperature in the chamber (26) from exceeding a prescribed maximum operating temperature of the consumer electronic device (18) or falling below a prescribed minimum operating temperature of the consumer electronic device (18).
Abstract:
An electronic assembly (100) with integral thermal transient suppression includes an integrated circuit (IC) chip (106) disposed within a cavity (103) of an IC device package (102). A transient thermal suppression material (TTSM) (110) is disposed in the cavity (103) in thermal contact with the IC chip (106). A heat sink (112) may also be provided in thermal contact with the chip (106). When present, the heat sink (112) serves as a cover of the packaged IC chip (106) and may include fins (112A,112B) extending from an upper surface (in contact with air) and a lower surface (in thermal contact with the TTSM (110)).The TTSM (110) may be thought of as a phase change material that absorbs energy dissipated by the IC chip (106) in a phase change event.
Abstract:
The present invention relates to the cooling of electronic components such as CD or DVD players and recorders and the disc or discs within. Specifically, the present invention relates to the internal cooling of a disc playing or recording device and the disc or discs within.
Abstract:
An electronic assembly (10) is provided having a thermal cooling fluid, such as a liquid, for cooling an electronic device (20) within a sealed compartment. The assembly (10) includes a housing generally defining a sealed fluid compartment, an electronic device (20) disposed within the housing (16) and a cooling liquid for cooling the electronic device (20). The assembly (10) includes inlet and outlet ports (44 and 46) in fluid communication with the sealed fluid compartment for allowing the cooling liquid to pass through the compartment to cool the electronic device (20). Fluid flow channels (26) are formed in thermal communication with the electronic device (20) within the housing (16). The fluid channels (26) include channels that allow liquid to flow in thermal communication with the electronic device (20) to cool the device (20).
Abstract:
An electronic package having circulated submersed cooling fluid and method are provided. The electronic package has a housing defining a sealed enclosure and electronic devices located in the housing. The electronic devices have thermal emitting electrical circuitry. A dielectric fluid, such as a liquid, is located in the housing in heat transfer relationship with the electronic devices. A fluid circulator, such as a piezo fan, is located in the housing in contact with the dielectric liquid for circulating the dielectric liquid to cool the electronic devices.
Abstract:
A circuit board assembly (50,60,70) with a substrate (10) having a laminate construction of ceramic layers, such as an LTCC ceramic substrate (10). The substrate (10) is configured for the purpose of improving the thermal management of power circuit devices mounted to the substrate (10). Thermally-conductive vias (16,76) extend through the substrate (10) from a first surface (24) thereof to a second surface (26) thereof. A circuit device (14,74) is mounted to the first surface (24) of the substrate (10) and is electrically interconnected to conductor lines (30) of the substrate (10). The device (14,74) is also thermally coupled to the thermally-conductive vias (16,76) with a first solder material (32,72). A heat sink (22) located adjacent the second surface (26) of the substrate (10) is bonded to the thermally-conductive vias (16,76) with a second solder material (34,78), such that the first solder material (32,72), the thermally-conductive vias (16,76), and the second solder material (34,78) define a thermal path from the device (14,74) to the heat sink (22).
Abstract:
A circuit board assembly (10) comprising a laminate substrate (12) and a surface mount device (18) having a CTE less than that of the laminate substrate (12) and attached with at least one solder joint (20) to a first surface (14) of the laminate substrate (12). The assembly (10) further includes a localized stiffener (24,124,224) attached to a second surface (16) of the laminate substrate (12) so as to be directly opposite the circuit device (18). The localized stiffener (24,124,224) is formed of a material and is shaped so that, when attached to the laminate substrate (12), the stiffener (24,124,224) is capable of increasing the thermal cycle fatigue life of the one or more solder joints (20) that attach the device (18) to the substrate (12).
Abstract:
An overmolded electronic assembly 20 having an electromagnetic interference shield 50, in the form of a thin metal film or foil, coupled to the top of or within an overmolded body 33. The shield 50 effectively reduces the amount of electromagnetic interference ("EMI") emissions from penetrating within the assembly to the circuit board 22 without substantially increasing the cost of the unit. Thus, an electronic assembly having improved vibration, moisture, and EMI emission resistance is achieved as compared with traditional overmolded or metal assemblies. Further, because the shield 50 can be formed on the electronic assembly in one continuous processing step, a substantial savings in time and cost for the manufacturing process is also realized.