Topic
Inductor
About: Inductor is a research topic. Over the lifetime, 52565 publications have been published within this topic receiving 484068 citations. The topic is also known as: passive two terminal.
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TL;DR: The proposed 3R is a highly efficient receiver circuit intended for use in Resonant Wireless Power Transfer (RWPT) application with a 6.78 MHz resonant frequency and employs the Continuous Conduction Mode and Discontinuous Conduction mode for different output power levels.
Abstract: The design of a Resonant Regulating Rectifier (3R) capable of switching-mode operation is presented. The proposed 3R is a highly efficient receiver circuit intended for use in Resonant Wireless Power Transfer (RWPT) application with a 6.78 MHz resonant frequency. Owing to the inductance of resonant coils, the 3R does not require any additional inductor for the switching-mode regulation. The transmitted power via the RWPT with the 3R ranges from 0 W to 6 W, and its peak efficiency reaches 86%. It employs the Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) for different output power levels. This helps to increase the output power and to lower the voltage stress on the transistor. Fabricated in 0.35 μm BCD technology, the 3R circuit occupies an area of 2.35×2.35 mm2. The functionality of the 3R is successfully demonstrated using a transmitter circuit with resonant coils.
97 citations
Patent•
04 Dec 2001
TL;DR: In this article, a symmetric DC/DC converter is defined, which includes a single inductor with a pair of switching devices connected to its terminals in a symmetrical arrangement with respect to the inductor.
Abstract: A symmetrical DC/DC converter selects an energy transferring direction and a step-up or a step-down operation as well as a desired step-up or a step-down ratio. The converter includes a single inductor with a pair of switching devices connected to its terminals in a symmetrical arrangement with respect to the inductor. The converter is operable as a step-up converter and a step-down converter in a manner such that one and the other of the switching devices are used as an input switch and an output switch, respectively, and that one and the other of the switching devices are conversely used as an output switch and an input switch, respectively.
97 citations
15 Jun 2008
TL;DR: In this paper, a self-tuning power regulator for inductive power transfer systems is proposed and a control strategy is described, which uses a binary weighted series of capacitors that can be switched via simple relays across a parallel resonant pick-up circuit.
Abstract: Inductive power transfer systems are now commonly used in ultra clean or dirty industrial applications to deliver power to both moving and stationary loads without contact. Each load requires a power pick-up and regulator that is coupled to a track, which carries a resonant current at VLF frequencies (typically 10-50 kHz). Modern pick-ups are tuned for resonance at the track frequency and their power delivery increasingly depends on accurate tuning of the resonant circuit. In this paper a new self tuning power regulator for inductive power transfer systems is proposed and a control strategy described. The system uses a binary weighted series of capacitors that can be switched via simple relays across a parallel resonant pick-up circuit. There are no additional switching losses during tuning, detection and operation so that the technique is applicable to high power pick-ups. The tuning circuit is evaluated under simulation and then made to operate on a practical 500 W pick-up regulator used in materials handling applications. In both simulation and experiment it is shown to successfully detect the tuning state of the system and correct for it during operation.
97 citations
TL;DR: In this article, a new phase shift full bridge (PSFB) converter with series-connected two transformers is proposed, which shows wide zero voltage switching (ZVS) ranges and no output inductor is needed since each transformer individually acts as an inductor or a transformer during different times of the switching cycle.
Abstract: A new phase shift full bridge (PSFB) converter with series-connected two transformers is proposed. The proposed converter shows wide zero voltage switching (ZVS) ranges and no output inductor is needed since each transformer individually acts as an inductor or a transformer during different times of the switching cycle. The operational principle, large signal modeling, and design equations are presented. Experimental results demonstrate that the proposed converter can achieve a significant improvement in the efficiency for a 100W (5 V, 20 A) telecommunication on-board power supply.
97 citations
07 May 2007
TL;DR: In this article, the authors present a 100MHz eight-phase synchronous buck converter using air-core inductors, which achieves a load current of 12A in an area of only 25mm2 and 2.5mm height.
Abstract: We present a 100MHz eight-phase synchronous buck converter using air-core inductors. The voltage regulator (VR) chip was manufactured in a 90nm CMOS process and mounted on a flip-chip test package together with surface-mount inductors and decoupling capacitors. The measured peak efficiency is 84.0% for Vin/Vout= 2.4V/1.5V and 79.3% for 2.4V/1.2V. The VR delivers a load current of 12A in an area of only 25mm2 and 2.5mm height. This is the first demonstration of a high-frequency VR with air-core inductors, that reaches a record power density of 3.78kW/in3.
97 citations