Electronic equipment having integrated circuit device and temper

Details Electronic equipment having integrated circuit device and temper Electronic equipment having integrated circuit device and temper

1993-08-27

1995-12-19

Wong, Peter S.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

327512, G06F 1520

Patent

active

054774179

ABSTRACT:
An electronic equipment such as a CPU body of a computer system includes a circuit board section, an abnormal temperature detecting section, a determining section, a refrigerant cooling system, and an alarm unit. The circuit board section for effecting preset signal processings includes a printed circuit board on which at least one PTC (Positive Temperature Coefficient) thermistor built-in type integrated circuit device including a package, an integrated circuit chip disposed in the package, a PTC thermistor disposed between the package and the integrated circuit chip, and an electrical deriving member disposed in the package, for transferring a signal with respect to the integrated circuit chip and PTC thermistor, and electronic elements are mounted. The abnormal temperature detecting section outputs an abnormal temperature signal when an output of the PTC thermistor has exceeded a preset value. The determining section determines an abnormal state of the temperature sensing element built-in type integrated circuit device according to an output of the abnormal temperature detecting section. The refrigerant cooling system and alarm unit are controlled based on the result of determination by the determining section.

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Mahalingam, Mali, "Thermal Design of Various of IC Packages for Lowering a Junction Temperature", Nikkei Electronics 1986, 4. 21 (No. 393).
Shaland, Alex, et al., "Circuit Protectors: Miniature But Mighty", Machine Design/Asia-Pacific, Spring 1992, pp. 22-26.
Kaye, Harvey, "An Optimal Junction Temperature of IC's is found from a planned MTBF as Well as the Number and Quality of IC's Used", Nikkei Electronics, 9.9.

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