Bublitz, LucasLucasBublitzRust, JochenJochenRustKulau, UlfUlfKulau2024-01-022024-01-02202311th International Workshop on Energy Harvesting & Energy-Neutral Sensing Systems (ENSsys 2023)979-8-40070-438-3https://hdl.handle.net/11420/44823Low power (LP) FPGAs are increasingly used in small embedded systems and sensors as processing units or accelerators. To bring the energy efficiency of these FPGAs to a new level, this paper propagates the utilization of undervolting. First, the development and evaluation of a precise and reliable testbench for automated undervolting tests is presented. Second, a comprehensive feasibility study including 5 DUTs shows devicespecific differences, correlations between absolute minimum voltages, signal propagation delays and also the influence of temperature. Depending on the configuration of the FPGA, voltages can be reduced by up to 71.6% while power dissipation is 3× up to 24.3× lower for complex and simple structures, respectively.enFeasibility StudyLow Power ProcessingLP FPGAUndervoltingComputer SciencesEngineering and Applied OperationsConference Paper10.1145/3628353.3628543Conference Paper