FAULT TOLERANT ACTIVE CURRENT SHARING

A system and method for maintaining a balanced current level among multiple power supply modules within a parallel power supply. An external voltage is applied to an internal reference translator circuit within each of the parallel power supply modules, such that an internal current-sharing voltage reference is generated within each power supply module. An external reference translator circuit is biased by an independent voltage level, such that the external reference translator circuit generates an external current-sharing voltage reference that is maintained at a higher voltage level than the internal current-sharing voltage references generated within the parallel power supply modules. The external current-sharing voltage reference acts as a master current share reference with respect to which each of the internal current-sharing voltage references. A current adjustment circuit within each of the power supply modules compares the internal current-sharing voltage reference with the master current share reference and generates a current adjustment signal in response to detecting a voltage differential between the master current share reference and the internal current-sharing voltage reference, such that load-sharing is provided among the parallel power supply modules.