A high efficient dual-output rectifier for piezoelectric energy harvesting
Document Type
Article
Publication Date
1-1-2019
Abstract
In this paper, a high efficient active NMOS dual-output rectifier for piezoelectric energy harvesting (PEH) in CMOS technology is proposed. The rectifier adopts a cross-coupled active NMOS topology producing two output DC voltages. A DC-DC combiner at the rectifier's output is employed to sum the output DC voltages which improves the effective Voltage Conversion Efficiency (VCE) and Power Conversion Efficiency (PCE). Simulated on a standard 65-nm CMOS technology, the proposed rectifier achieves a VCE > 98% across a connected output load of Rrec > 9 kΩ and a peak PCE of ∼84% for Rrec = 12 kΩ. Compared to conventional piezoelectric rectifiers, the PCE of the proposed rectifier is significantly improved with comparative VCE performance.
Keywords
Piezoelectric Energy Harvesting (PEH), Cross-Coupled Active NMOS Rectifier, DC-DC combiner, Voltage Conversion Efficiency (VCE), CMOS
Divisions
fac_eng
Publication Title
AEU - International Journal of Electronics and Communications
Volume
111
Publisher
Elsevier