Abstract
Power and performance efficiencies are the most important design parameters in system – on - chip design. Numbers of methods were developed for reducing the power and delay by reducing supply voltage and multi supply voltages. Multiple supply voltage designs need voltage level conversions between multiple voltage domains. This is achieved by the application of voltage level shifter (LS) circuits. LSs are an interfacing circuit which interconnects low core voltage to high core voltage and vice versa. LS ease communication among diverse modules. However literature reported that the conventional LSs suffer from delay variation due to dissimilar current driving transistors along with high power dissipation. This paper presents the identification of limitations and design aspects of existing LSs through an extensive literature survey and to project the current state of LSs. This study concentrates on multiple supply voltages, power consumption, and speed of processing in ICs. The detailed literature review is expected to pave way for addressing the issues and challenges related to LSs and helps in design and development of efficient low-power multivoltage LSs in the design aspects of VLSI circuits.
Published Version
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