Browse Prior Art Database

Off Card Regulator

IP.com Disclosure Number: IPCOM000044982D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Beyer, LC: AUTHOR [+3]

Abstract

Voltage regulation components are relocated to a small circuit card to reduce congestion on a standard-size circuit card and improve wirability.

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Off Card Regulator

Voltage regulation components are relocated to a small circuit card to reduce congestion on a standard-size circuit card and improve wirability.

Very large scale Integration (VLSI) technologies typically require special supply voltages not provided by the power supply of the system to which they are connected. These special supply voltages must be generated on the logic card 2 by using a regulator and a power circuit driven by the system power supply voltage which is in the range of 5+/-10%. This arrangement creates a number of problems. For example, the area available for other circuits on the card is reduced due to large regulator components. Also, the use of large vias for regulator components turns the standard logic card into a non-standard card. This puts constraints on wiring the card because standard wiring programs cannot be used. Further, such non-standard cards require custom drilling tapes and tracking of additional non-standard part numbers. Another problem is that the regulator's large power consumption creates a hot spot on the card.

To overcome these problems, the regulator and power circuit components are designed and built on a separate non-standard 1-wide x 1 high card 1 which, as indicated by the arrow in the drawing, instead of being located at location A, is located at location B. The regulator card is connected to card 2 through a top card connector 3. The circuit board is indicated at 4. This regulator card can be design...