Research Article
Differential Cascode Voltage Switch Logic (DCVSL) Level Shifter with Logic Error Detection
@INPROCEEDINGS{10.1007/978-3-031-81168-5_8, author={Azmath Noorain and G. Sanjeeva Reddy and Srimanthula Manish Goud and Sangeeta Singh}, title={Differential Cascode Voltage Switch Logic (DCVSL) Level Shifter with Logic Error Detection}, proceedings={Broadband Communications, Networks, and Systems. 14th EAI International Conference, BROADNETS 2024, Hyderabad, India, February 16--17, 2024, Proceedings, Part I}, proceedings_a={BROADNETS}, year={2025}, month={2}, keywords={Level Shifter (LS) System-on-chip (SoC) Cross-Coupled pFET LS (CPLS) DCVSL Logic Error Detection}, doi={10.1007/978-3-031-81168-5_8} }- Azmath Noorain
G. Sanjeeva Reddy
Srimanthula Manish Goud
Sangeeta Singh
Year: 2025
Differential Cascode Voltage Switch Logic (DCVSL) Level Shifter with Logic Error Detection
BROADNETS
Springer
DOI: 10.1007/978-3-031-81168-5_8
Abstract
Lowering the supply voltage proves highly effective in reducing dynamic power consumption within system-on-chip architectures, given its direct proportionality to VDD2. A Level Shifter, also referred to as a Voltage Level Translator, is an electronic circuit specialized in converting signals between different voltage levels. The suggested LS design adopts the Cross-Coupled pFET Level Shifter approach. However, CPLS encounters contention issues during transitions due to its cross-coupled pFET structure. In this configuration, an nFET powered by VDDL needs to surpass a pFET powered by VDDH for positive feedback to trigger the operation. Consequently, as the voltage difference (VDDH–VDDL) increases, contention intensifies, potentially leading to operational failures. To mitigate this challenge, Differential Cascode Voltage Switch Logic (DCVSL) serves as an alternative to the single cross-coupled flip-flop. The circuit design, implemented using the Cadence Virtuoso tool, underwent comprehensive comparative analysis against existing level shifters. The utilization of DCVSL notably improved noise immunity, speed, and robustness while resulting in a 50% reduction in Static Power consumption.
