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Hysteretic control is popular for switched-capacitor (SC) dc–dc converters. Conventional hysteretic controllers require either a large output capacitor or high-speed output voltage detection for proper regulation. In this paper, a lower boundary hysteretic control method is proposed which matches the output sampling frequency to the converter switching frequency across the entire load range, hence...
This paper presents a 2/3 step-down switched-capacitor DC-DC converter with integrated NMOS-LDOs in both charging and discharging phases to suppress the output voltage ripple. A gate driving technique implementing adaptive gate slope and gate pre-charge is proposed to reduce the switching noise during phase transitions and assist the turn-on of the regulation transistors, respectively. Good load regulation...
This paper presents a micro-power photovoltaic (PV) harvesting system. A H-bridge configuration DC-DC converter is designed to harvest PV energy and deliver energy to applications of Internet of Thing (IOT). The main converter consists of a single inductor with two inputs and two outputs. It regulates a constant 1V output voltage for several applications such as sensors and signal transmitters. The...
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