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Communication Dans Un Congrès Année : 2022

Ultra-Low Frequency DC-DC Converters Using Switched Batteries

Résumé

To address ultra-low frequency DC-DC converters, we explore the concept of the switched battery converter. It is mainly derived from the switched capacitor converter topology replacing the flying capacitors by flying batteries. The best-inclass energy density of batteries compared to inductors and capacitors reduces drastically the operating frequency at low output power delivery while maintaining low output ripple. An experimental evaluation using mm 3-scale off-the-shelf NiMH battery is described in this paper to present a first proof-ofconcept of switched-battery converter. The characterized 2:1 DC-DC converter achieves 25mW at 1.2V output voltage in 74mm3 battery operating as low as 0.1Hz operating frequency while maintaining less than 15% output voltage ripple without output filtering.
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Dates et versions

hal-04300880 , version 1 (23-11-2023)

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Emeric Perez, Carlos Augusto Berlitz, Yasser Moursy, Bruno Allard, Sami Oukassi, et al.. Ultra-Low Frequency DC-DC Converters Using Switched Batteries. 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Oct 2022, Detroit, United States. pp.1-7, ⟨10.1109/ECCE50734.2022.9947546⟩. ⟨hal-04300880⟩
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