An on-die ultra-low voltage DC-DC step-up converter with voltage doubling LC-tank

Date

2016-12-01

Author

Jayaweera, H. M. P. C.
Pathirana, W. P. M. R.
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

244
views

0
downloads

In this paper we report the design, characterization and verification of a novel on-die ultra-low voltage DC-DC converter circuit for energy harvester applications in 0.18 mu m complementary metal oxide semiconductor (CMOS) technology. The circuit self-starts, does not use off-chip components, and is thus suitable for use in highly integrated low cost systems. The first version of the design has a five-stage charge-pump stimulated by an oscillator with two center-tap inductors. It is validated on a test chip that this converter can boost 0.25 V-1.7 V for a 60 k Omega load with 15.5% maximum efficiency. The center-tap implementation leads to a 38% area reduction compared to the conventional four planar inductors. The proposed second version of the DC-DC design has a modified LC-tank with center-tap and planar hybrid inductors, which leads to a simulated step up from 0.2 V input to 1.65 V output for a 45 k Omega load with 35% maximum efficiency. The new boost implementation is hence expected to improve both power efficiency and output power capacity significantly compared to the first design, at a cost of a 31% layout area growth. The second revision in addition provides a 15% chip area reduction compared to the conventional four planar-inductor approach.

Subject Keywords

Mechanical Engineering, Electrical and Electronic Engineering, Mechanics of Materials, Electronic, Optical and Magnetic Materials

URI

https://hdl.handle.net/11511/67277

DOI

https://doi.org/10.1088/0960-1317/26/12/124010

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Design and fabrication of a high performance resonant MEMS temperature sensor Kose, Talha; Azgın, Kıvanç; Akın, Tayfun (IOP Publishing, 2016-04-01) This paper presents a high performance MEMS temperature sensor comprised of a double-ended-tuning-fork (DETF) resonator and strain-amplifying beam structure. The temperature detection is based on the 'thermal strain induced frequency variations' of the DETF resonator. The major source of thermal strain leading to the frequency shifts is the difference in thermal expansion coefficients of the substrate and the device layers of the fabricated structures. By selecting the substrate as glass and the device laye...
Modeling and fabrication of electrostatically actuated diaphragms for on-chip valving of MEMS-compatible microfluidic systems Atik, Ali Can; Ozkan, Metin Dundar; Ozgur, Ebru; Külah, Haluk; Yıldırım, Ender (IOP Publishing, 2020-11-01) This paper presents an analytical model to estimate the actuation potential of an electrostatic parylene-C diaphragm, processed on a glass wafer using standard microelectromechanical systems (MEMS) process technology, and integrable to polydimethylsiloxane (PDMS) based lab-on-a-chip systems to construct a normally-closed microvalve for flow manipulation. The accurate estimation of the pull-in voltage of the diaphragm is critical to preserve the feasibility of integration. Thus, we introduced an analytical m...
Custom integrated circuit design for ultrasonic therapeutic CMUT array Maadi, Mohammad; Bayram, Barış (Springer Science and Business Media LLC, 2015-04-01) This paper presents the design of a highly flexible and programmable transmit beam-former ASIC using a high voltage (HV) 0.35 mu m CMOS technology to be flip-chip bonded to a 4 x 4 CMUT array for ultrasound therapeutic applications. However, proposed IC can be used as a transmitter circuitry in color Doppler 3D imaging applications. In our proposed chip, each CMUT element is provided by an 8-bit shift register, an 8-bit comparator, a one-shot circuit with adjustable pulse width, a programmable pulse train g...
An electromagnetic micro energy harvester based on an array of parylene cantilevers Sari, Ibrahim; Balkan, Raif Tuna; Külah, Haluk (IOP Publishing, 2009-10-01) This paper presents the design, optimization and implementation of an electromagnetic type vibration-to-electrical micro energy harvester. The proposed harvester implements a new design employing array of parylene cantilevers on which planar gold coils are fabricated. The micro harvester generates voltage by virtue of the relative motion between the coils and a stationary magnet. The coils are connected electrically in series to sum up the voltage output from individual cantilevers. The number of cantilever...
High mobility, low voltage operating C-60 based n-type organic field effect transistors Schwabegger, G.; Ullah, Mujeeb; Irimia-Vladu, M.; Baumgartner, M.; Kanbur, Y.; Ahmed, R.; Stadler, P.; Bauer, S.; Sariciftci, N. S.; Sitter, H. (Elsevier BV, 2011-10-01) We report on C-60 based organic field effect transistors (OFETs) that are well optimized for low voltage operation. By replacing commonly used dielectric layers by thin parylene films or by utilizing different organic materials like divinyltetramethyldisiloxane-bis(benzocyclo-butene)(BCB), low density polyethylene (PE) or adenine in combination with aluminum oxide (AlOx) to form a bilayer gate dielectric, it was possible to significantly increase the capacitance per unit area (up to two orders of magnitude)...

Citation Formats

H. M. P. C. Jayaweera, W. P. M. R. Pathirana, and A. Muhtaroglu, “An on-die ultra-low voltage DC-DC step-up converter with voltage doubling LC-tank,” 2016, vol. 26, p. 0, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67277.