Patent ID: 8035939
Filing Date: 2011-10-11
Classification: H02M

Abstract:
1. A method of operating a plurality of power supply modules, each power supply module comprising a respective track pin interconnected with the respective track pin of each other power supply module, the method comprising: limiting a respective output voltage of each power supply module to a lesser of a set-point voltage of the power supply module and a voltage of the respective track pin of the power supply module; changing a voltage of the respective track pin of a power supply module in response to a fault state of the power supply module; controlling a slew rate of the changed voltage of the respective track pin of the power supply module with a slew control circuit included in the power supply module coupled to the respective track pin of the power supply module; providing a binary output signal from a threshold circuit included in each power supply module in response to the changed voltage of the respective track pin of the power supply module to indicate the fault state of the power supply module; and detecting the changed voltage at the respective track pin of each of at least one other power supply module to detect the fault state.