Authors: Ms.C.Santhini, Assistant Professor N Sudha
Abstract: In light of increasing demand for portable devices, there is an increased requirement for efficient power conversion schemes to enhance battery capacity and reduce power loss via heat dissipa-tion. In this paper, a new hybrid DC-DC topology is presented which comprises a Switched-Capacitor (SC) block coupled with a reconfigurable interleaved buck circuit that can reach a max-imum efficiency of 94.7% under a 1.8 W load. The power supply designed for battery-operated systems, powered by Li-ion batteries (2.7V-4.2V input voltage), delivers a stable 1.2V output with low quiescent current consumption of only 18 µA. The power loss evaluation is extensively covered. When compared with three modern converters designed between 2022 and 2025, the developed converter shows higher efficiency levels at lower loads (88.2% at 10mA) and reduced settling time of 6.5 µs.
