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Different Voltage Modules on One Power Domain

IP.com Disclosure Number: IPCOM000112178D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Shepherd, BL: AUTHOR [+3]

Abstract

Disclosed is a method to have modules, which are using different voltages, on one power domain. That means, instead of having several power domains together with several different power supply voltages, only one domain with only one power supply voltage.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Different Voltage Modules on One Power Domain

      Disclosed is a method to have modules, which are using
different voltages, on one power domain.  That means, instead of
having several power domains together with several different power
supply voltages, only one domain with only one power supply voltage.

      For example, the modules and the power supply are mounted to a
board.  The board got usually several power planes for distributing
the voltage from the power supply to the modules.  Some of the
voltage planes are now not directly connected to the power supply.
To these voltage planes are the modules with the lower voltage
connected.  The higher voltage modules are directly connected to the
power supplies via the other voltage planes.  The two sets of voltage
planes are connected together at a point which is physically in the
middle of the high voltage modules located.  The voltage
distribution, with all the unavoidable drops, goes then from the
power supply to the high voltage modules first and then to the low
voltage modules.  This allows for configurations as illustrated
below.

   Voltages are for example only.