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In this paper we have analyzed the design, realization and optimization of a photovoltaic (PV) system provided with MPPT command and detection circuit of dysfunction and reconvergence the system (CDCS) to the new maximum power point (MPP) following a perturbation due to weather variation (solar irradiation, temperature, ‥) and the load. The results obtained show very good agreement between simulation...
This paper presents ultra low-power adiabatic flip-flops that operate on near-threshold region. The near-threshold flip-flops are realized by PAL-2N (pass-transistor adiabatic logic with NMOS pull-down configuration) circuits. A near-threshold mode-10 counter is verified. All circuits are simulated using NCSU PDK 45 nm technology by varying supply voltage from 0.2 V to 0.9 V with 0.1 V steps. Based...
With the advance of VLSI technology, power consumption of chips has become a major concern in the state of art CMOS circuits design. Among all kinds of previous power analysis methods, the gate-level power analysis can give a relatively accurate result and has been commonly used. However, the simulation speed is very low due to large amount switching activity records for all gate-level cells. In this...
Polymorphic gates can be considered as a new reconfigurable technology capable of integrating logic functions with sensing in a single compact structure. Polymorphic gates whose logic function can be controlled by the level of the power supply voltage (Vdd) represent a special class of polymorphic gates. A new polymorphic NAND/NOR gate controlled by Vdd is presented. This gate was fabricated and utilized...
With technology scaling, vulnerability to soft errors in random logic is increasing. There is a need for on-line error detection and protection for logic gates even at sea level. The error checker is the key element for an on-line detection mechanism. We compare three different checkers for error detection from the point of view of area, power and false error detection rates. We find that the double...
Outsourcing of SoC fabrication units has created the potential threat of design tampering using hardware Trojans. Methods based on side-channel analysis exist to differentiate such maligned ICs from the genuine ones but process variation in the foundries limit the effectiveness of such approaches. In this work, we propose a circuit partition based approach to detect and locate the embedded Trojan...
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