Browse Prior Art Database

Method of Testing Current Sharing Regulators without Paralleling

IP.com Disclosure Number: IPCOM000114060D
Original Publication Date: 1994-Nov-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Egan, PK: AUTHOR [+3]

Abstract

A method of functionally testing redundant current sharing regulators without paralleling the regulators in a test fixture is disclosed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 86% of the total text.

Method of Testing Current Sharing Regulators without Paralleling

      A method of functionally testing redundant current sharing
regulators without paralleling the regulators in a test fixture is
disclosed.

      The test method is based on a current sharing technique where
independent regulators produce a signal proportional to the load
current, used to determine load sharing, and a "floating"
master/slave architecture where any unit may be the master.  The
master has the highest reference voltage and therefore regulates the
output voltage.  The other sharing regulators are slaves or current
sources which produce a load current based on the masters current
share signal.

The test method consists of two parts:

      The first part tests the regulator as a master to verify that
the current share signal is proportional to the load current.  This
is done by simply loading the regulator output with a known constant
current and measuring the current share signal to determine if it is
within spec limits.  This test is performed at different load
settings.

      The second part tests the regulator as a slave to verify the
regulator will produce the load current required by the master.  This
is performed by applying an electronic load to the regulator output
in a constant voltage mode, at a voltage slightly higher than the
nominal regulation point.  This will force the regulator to be a
slave by oversatisfying its voltage loop.  Next, the current share
sig...