An Integrated Circuit Design of High Efficiency Parallel-SSHI Rectifier for Piezoelectric Energy Harvesting
نویسندگان
چکیده
This paper presents the design and implementation of a rectifier for piezoelectric energy harvesting based on the parallel-synchronized-switch harvesting-on-inductor (P-SSHI) technique, also known as bias flip circuit[1]. The circuit is implemented with 0.25 μm CMOS high voltage process with only 0.9648 mm chip area. Post-layout simulation of the circuit shows the circuit extracts 336% more power compared with the full-bridge rectifier. The system’s average control power loss is 26μW while operating with a self-made MEMS piezoelectric transducer with output current 25μA 120Hz and internal capacitance 6.45nF. The output power is 43.42 μW under optimal load of 1.5 MΩ.
منابع مشابه
A parallel-SSHI rectifier for ultra-low-voltage piezoelectric vibration energy harvesting
An idling scheme of Synchronous Switch Harvesting on Inductor (SSHI) is proposed for piling up output voltage of the piezoelectric energy (PE) harvester cycle by cycle, to deal with the PE harvester’s low output voltage. The proposed rectifier integrates active diodes and a parallel-SSHI technique with a simple control scheme, and therefore has a high efficiency. The simulation results demonstr...
متن کاملPower density improvement of the power conditioning circuit for combined piezoelectric and electrodynamic generators
In this study, we report a power management circuit for a combined piezoelectricelectrodynamic generator. A piezoelectric element is bonded to a spring steel cantilever beam and a magnet, used as tip mass, oscillates through a coil. This principle creates the combined generator. A test setup has been created to automate the characterization of the piezoelectric generator and its power managemen...
متن کامل22.2 A 1.7mm2 inductorless fully integrated flipping-capacitor rectifier (FCR) for piezoelectric energy harvesting with 483% power-extraction enhancement
Energy Harvesting is crucial to the development of miniaturized implants to achieve minimal invasiveness and system autonomy. While RF wireless power transfer suffers from substantial tissue attenuation, a wireless piezoelectric energy harvester (PEH) is more attractive for deep-tissue implant applications [1]. Typical PEH interfaces with a full-bridge rectifier for AC-DC conversion with limite...
متن کاملAn improved analysis of the SSHI interface in piezoelectric energy harvesting
This paper provides an analysis for the performance evaluation of a piezoelectric energy harvesting system using the synchronized switch harvesting on inductor (SSHI) electronic interface. In contrast with estimates based on a variety of approximations in the literature, an analytic expression of harvested power is derived explicitly and validated numerically for the SSHI system. It is shown th...
متن کاملAn Inductorless Self-Controlled Rectifier for Piezoelectric Energy Harvesting
This paper presents a high-efficiency inductorless self-controlled rectifier for piezoelectric energy harvesting. High efficiency is achieved by discharging the piezoelectric device (PD) capacitance each time the current produced by the PD changes polarity. This is achieved automatically without the use of delay lines, thereby making the proposed circuit compatible with any type of PD. In addit...
متن کامل