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Level converting flip-flops (LCFFs) are crucial components for multisupply systems as interfaces between different voltage islands. The proposed energy-efficient LCFFs reduce the power consumption of clock networks with dual-edge triggering, support sleep mode of power management mechanisms with data retention, and have symmetry in setup times and insensitivity to output parasitics. With all these...
Continuous scaling, necessary for enhanced performance and cost reduction, has pushed existing CMOS materials much closer to their intrinsic reliability limits, forcing reliability engineers to get a better understanding of circuit failure. This requires that designers will have to be very careful with phenomena such as high current densities or voltage overshoots. In addition to the reliability issues,...
We present the first in-depth study of the two existing algorithms, namely, Clustered Voltage Scaling (CVS) and Extended Clustered Voltage Scaling (ECVS), used for assigning the voltage supply to gates in integrated circuits having dual power supplies. We present a comparison of the achievable power savings using these algorithms on various benchmark circuits and first point out that ECVS does provide...
Magnetic amplifier is a simple and high efficiency post regulator in auxiliary output of the multiple output power supplies. The Schottky diodes must be replaced by synchronous rectifiers (SRs) in low voltage output converters to improve the efficiency. In this paper, a new gate-driver scheme is proposed to maximize the efficiency of the synchronous rectifiers combined with magnetic amplifier post...
This paper proposes a constant-load SRAM design for highly efficient recovery of bit-line energy with a resonant power-clock supply. For each bit-line pair, the proposed SRAM includes a dummy bit-line of sufficient capacitance to ensure that the memory array presents a constant capacitive load to the power-clock, regardless of data or operation. Using a single-phase power-clock waveform, read and...
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