Design optimization of a fully integrated charge-pump with LC tank oscillator for ultra-low voltage energy harvesting

Date

2017-01-01

Author

Jayaweera, H. M. P. C.
Muhtaroglu, Ali

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

236
views

0
downloads

Model based optimization of a novel integrated interface circuit topology is presented for low voltage DC-DC step-up conversion. A cross-coupled charge pump is implemented in standard 0.18 mu m CMOS technology using an integrated LC tank oscillator to enable a compact, low cost, self-starting solution with maximum efficiency at ultra-low input voltage levels available from embedded micro-power generators. The voltage doubling oscillator can start up with input as low as 0.10 V. Full system can step 0.2 V up to 1.7 V to supply >400 mu V to 6 k Omega load with 46.5% efficiency based on post-layout simulations. The minimum simulated input voltage is 0.11 V, which is boosted up to 1.0 V under open circuit conditions. The optimized system thorough the established model improves output power and efficiency more than 30% compared to the alternatives. The compact LC tank leads to 17% area reduction compared to the conventional VCO with four planar inductors.

Subject Keywords

Low voltage DC-DC, Integrated step-up, Energy harvester interface, Micro-power generator, LC oscillator

URI

https://hdl.handle.net/11511/64409

Journal

MICROELECTRONICS JOURNAL

DOI

https://doi.org/10.1016/j.mejo.2016.10.010

Collections

Department of Electrical and Electronics Engineering, Article

Suggestions

OpenMETU
Core

Performance Evaluation and Selection of PWM Switching and Control Methods for Grid Connected Modular Multilevel Converters Ciftci, Baris; Hava, Ahmet Masum (2015-09-24) This paper focuses on the determination of suitable carrier based pulse width modulation (PWM) switching and control methods for grid connected modular multilevel converters (MMCs). Characterization of various level-shifted and phase-shifted carrier based PWM methods are provided in terms of output voltage waveforms both for N+1 and 2N+1 level output phase voltages. Carrier based PWM method based control approaches are evaluated for MMC. Performances of different control methods are evaluated and compared f...
Implementation of 1 kV on LV feeders: a smart alternative to MV line investments to solve voltage drop problems at LV systems OZENA, Kadir; CEBECI, Mahmut E.; TOR, Osman B.; BATAR, Gokhan; KILIC, Andac; TURKMEN, Ulfet; Güven, Ali Nezih (2017-04-21) This paper presents methodology and on-site pilot implementation of utilizing 1 kV at low voltage (LV) feeders as an alternative to medium voltage (MV) line investments to solve voltage drop problems at LV systems. Typically distribution companies solve voltage drop problems of LV system by installing a new MV/LV transformer and transferring outmost loads of the existing transformer to the new transformer. This necessitates installation of MV line between the existing and new transformer. The implementation...
Integrated optical modulators with zero index metamaterials based on photonic crystal slab waveguides Yildirim, Mustafa; GÖVDELİ, ALPEREN; Kocaman, Serdar (2019-01-01) A novel integrated optical modulator design is presented using zero index metamaterial-based Mach-Zehnder Interferometer with photonic crystal phase shifters. The phase modulation relies on the shift between the photonic bandgaps having non-zero and zero effective refractive indices. A small change in the bulk index results in an effective index change between the arms of the MZI due to the disturbance of the band structure. Thus, such a structure provides a new approach for phase modulation on integrated o...
DC Link Capacitor Optimization for Integrated Modular Motor Drives Ugur, Mesut; Keysan, Ozan (2017-06-21) In this paper, selection of optimum DC link capacitor for Integrated Modular Motor Drives (IMMD) is presented. First, a review of IMMD technologies is given and current research and future prospects are studied. Inverter topologies and gate drive techniques are evaluated in terms of DC link performance. The urge for volume reduction in IMMD poses a challenge for the selection of optimum DC link capacitor. DC Link capacitor types are discussed and critical aspects in selecting the DC links capacitor are list...
Design and implementation of a sic based three phase grid-connected current source inverter for solar applications Bay, Olcay; Ermiş, Muammer; Bilgin, Hazım Faruk; Department of Electrical and Electronics Engineering (2017) In this thesis, analysis, design and implementation of a three-phase 400V, 20 kVA Current Source Inverter (CSI) have been carried out for grid-connected photovoltaic applications based on the multi-string inverter concept. This inverter can be used in large scale photovoltaic (PV) applications by connecting many in parallel at 400V and coupling to medium voltage through a common transformer. The power stage of the inverter is based on the basic full-bridge CSC topology and each power semiconductor which mus...

Citation Formats

H. M. P. C. Jayaweera and A. Muhtaroglu, “Design optimization of a fully integrated charge-pump with LC tank oscillator for ultra-low voltage energy harvesting,” MICROELECTRONICS JOURNAL, pp. 33–39, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64409.