Fault Tolerant Voltage Regulator

Abstract

A fault tolerant voltage regulator may include a plurality of operational transconductance amplifiers. The plurality of operational transconductance amplifiers may be configured according to a unity-gain configuration. The plurality of operational transconductance amplifiers may be configured to couple in parallel to a load. The plurality of operational transconductance amplifiers may be configured to load share a load current associated with the load approximately equally among the plurality of operational transconductance amplifiers.

What is claimed is: 
     
         1 . A fault tolerant voltage regulator comprising:
 a plurality of operational transconductance amplifiers configured according to a unity-gain configuration and to couple in parallel to a load, wherein the plurality of operational transconductance amplifiers are configured to load share a load current associated with the load approximately equally among the plurality of operational transconductance amplifiers.   
     
     
         2 . The fault tolerant voltage regulator of  claim 1 , wherein an output of each of the plurality of the operational transconductance amplifiers is coupled to a common output node, and wherein a negative input of each of the operational transconductance amplifiers is coupled to the common output node. 
     
     
         3 . The fault tolerant voltage regulator of  claim 1 , where a positive input of each of the plurality of operational transconductance amplifiers is coupled to a common input node, and wherein the common input node is an output of a voltage divider. 
     
     
         4 . The fault tolerant voltage regulator of  claim 1 , wherein the load current is distributed approximately equally among a remainder of the plurality of operational transconductance amplifiers when one or more of the operational transconductance amplifiers is incapable of sharing the load current associated with the load approximately equally.