Browse Prior Art Database

Annulus-Convection Vertically Integrated Module Cooling

IP.com Disclosure Number: IPCOM000102896D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 60K

Publishing Venue

IBM

Related People

Chrysler, GM: AUTHOR [+2]

Abstract

In a thermal conduction module (TCM) semiconductor chips are arranged on a substrate in a row and column array, as is typical. Metal pistons extending from downwardly open cylindrical holes (piston holes) in the hat are pressed against the chip to provide a conduction path for heat transfer from the chips. The pistons are spring loaded in the hat to ensure that the piston-chip interface has good thermal contact.

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Annulus-Convection Vertically Integrated Module Cooling

      In a thermal conduction module (TCM) semiconductor chips are
arranged on a substrate in a row and column array, as is typical.
Metal pistons extending from downwardly open cylindrical holes
(piston holes) in the hat are pressed against the chip to provide a
conduction path for heat transfer from the chips.  The pistons are
spring loaded in the hat to ensure that the piston-chip interface has
good thermal contact.

      The cooling hardware for this module is made up from a
three-tier integrated hat-coldplate.  The lowest tier (tier-1) is the
hat containing the spring-loaded pistons. From the substrate side,
this hat appears the same as the hats used in the conventional TCM.
Tier-1 has upwardly facing cylindrical holes (convection holes)
located on the diagonals between the piston holes.  These holes form
the convective surface for cooling, and like the piston holes, do not
extend through the thickness of tier-1.  The top surface of tier-1
has fashioned on it distribution vanes, one between each row of
holes, which directs the coolant (water) from the holes to a return
manifold located at one end of tier-1.

      The second tier (tier-2) has on its lower side, coolant
injector nozzles which extend downward.  When tier-2 is positioned on
tier-1, the coolant injector nozzles are each centered in one of the
convection holes in tier-1.  The top surface of tier-2 has fashioned
on it distribution van...