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The ATLAS detector is set to undergo a substantial upgrade termed the"Phase-II" upgrade during the Long-Shutdown in preparation for the start ofoperation of the High Luminosity Large Hadron Collider (HL-LHC). This paperdescribes the development and implementation of the Phase-II upgrade lowvoltage power supply transformer-coupled buck converter (Brick) test bench. Alarge scale production of approximately 2048 finger low voltage power supplies,with an identical output voltage, is set to be undertaken in the year 2022.This production will culminate in the complete replacement of the LVPS BrickV7.5.0 currently installed within the Tile Calorimeter. Due to the location ofthe Bricks within the inner barrel of the TileCal their reliability is of theutmost importance. Therefore, the implementation of performance screening willbe implemented and will involve the testing and certification of all Bricksproduced. A custom test bench has been developed in order to facilitate theabove-mentioned testing. The test bench described herein quantifies and logsthe performance of an upgrade Brick allowing for comparison with predefinedperformance metrics before being approved and subsequently installedon-detector.

journal of instrumentation

A monitoring and control test bench for assessing the upgraded low  voltage power supplies for the ATLAS Tile Calorimeter Phase-II Upgrade  front-end electronics