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In this paper we present the first fully integrated analog LDO (low dropout regulator) for sub-0.5V supply voltages. The LDO can operate from 0.3V-to-1.0V input voltage, and can sustain a load variation of 10mA-to-100mA at 1.0V input and 5mA-to-25mA at 0.3V input. It achieves a peak 99.1% current efficiency for a 100mA load at 0.9V output voltage. In order to realize the gate drive at sub-0.5V supply...
This paper presents a fully Integrated, software defined capacitive DC-DC converter. The converter implements K-F-C tuning (K = conversion ratio, F = frequency and C = capacitance) in real time so as to accommodate any output load. It has a 4X tunable output voltage, supports a 3269X output load current range while achieving a peak efficiency of 82.1%. This design introduces an accumulation floating...
This paper presents a design framework to select the best topology and conversion ratio of operation for series-parallel capacitive buck/boost DC-DC converters. The framework models all converter families providing design insights and tradeoffs among the various topologies. We select the 10 optimal topologies that always performs better than any of the 96 permutations that are possible for series-parallel...
This paper presents a fully integrated hybrid inductive/capacitive converter that supports 70X output power range while maintaining high efficiency. This high efficiency is achieved by using an inductive converter for larger loads and a capacitive converter for lower loads. We have also shown the feasibility of implementing digital circuits under the inductor increasing the peak converter power density...
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