Electronic package having active means to maintain its operating temperature constant
First Claim
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1. An apparatus for actively cooling a semiconductor chip module comprising:
- a semiconductor chip module secured to a printed circuit board;
a heat sink thermally secured to said module;
variable air flow means for directing air flow over said heat sink;
means for monitoring the temperature difference between the module and the printed current board; and
control means for connecting the means for monitoring the temperature difference between the module and the printed circuit board and the variable air flow means to regulate the air flow to maintain the temperature difference at a preset value.
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Abstract
An electronic package having an active cooling system for maintaining a semiconductor chip at approximately a constant temperature by monitoring the present temperature of the chip and varying the air flow over a heat sink in thermal contact with the chip in response to the temperature. In addition, the temperature difference between the semiconductor chip module and a printed circuit board is also monitored to maintain that difference at a preset value. The air flow is varied by a variable speed fan or a variable direction baffle.
120 Citations
10 Claims
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1. An apparatus for actively cooling a semiconductor chip module comprising:
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a semiconductor chip module secured to a printed circuit board; a heat sink thermally secured to said module; variable air flow means for directing air flow over said heat sink; means for monitoring the temperature difference between the module and the printed current board; and control means for connecting the means for monitoring the temperature difference between the module and the printed circuit board and the variable air flow means to regulate the air flow to maintain the temperature difference at a preset value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for actively cooling a semiconductor chip module comprising the steps of:
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monitoring the temperature difference between a semiconductor chip module and a printed circuit board on which the module is mounted; and varying the air flow over a heat sink in thermal contact with said module in response to said temperature difference to maintain said temperature difference at a preset value. - View Dependent Claims (8, 9, 10)
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Specification