Most of the power factor regulator topologies in continuous conduction mode result in bulky magnetics, and in discontinuous conduction mode result in high harmonic content. To solve these problems a Cuk topology is presented in discontinuous conduction mode (DCM) with coupled inductors for power factor regulation, the unique feature exhibited by the converter that makes the converter better tha...

230 Abstract — The paper is focused on a new and practical approach to perform sensitivity and tolerance analysis of analog lumped circuits. Any linear circuit can contain passive elements, magnetically coupled inductors, excess elements, and any type of independent and controlled sources. Special strategies based on symbolic methods are used in order to reduce the computational effort and to m...

In this study, we investigate the circuit model that twenty hard oscillators with two LC resonators are coupled by inductors. We observe two kinds of waves by the change of initial states. First waves are changing phase states between two adjacent oscillators from in-phase to anti-phase or from antiphase to in-phase and continuously exist. We call this wave as “phase inversion waves”. Second wa...

Assuming that the reader is familiar with basic magnetic design theory, this topic provides design guidance to achieve high efficiency, low electromagnetic interference (EMI), and manufacturing ease for the magnetic components in typical offline power converters. Magnetic-component designs for a 90-W notebook adapter and a 300-W ATX power supply are used as examples. Magnetic applications to be...

This paper proposes a single-stage Sepic-type high brightness LED driver for universal line input to perform power factor correcting and LED dimming. In the driver, a coupled inductor is introduced to replace with two separate inductors to lower volume and cost. A soft-switching cell is embedded into the driver to obtain zero-voltage switching ZVS feature so as to furthermore improve driver eff...

Monolithic on-chip inductors are key passive devices in radio frequency integrated circuits (RFICs). Currently, 70-80% of the on-wafer area of most RFIC chips is occupied by the sprawling planar spiral inductors, and its operation frequency is limited to a few GHz. With continuous scaling of the transistor technology, miniaturization and high frequency operation of inductors have become the bot...

This paper presents a chip-level integration of radio-frequency (RF) microelectromechanical systems (MEMS) air-suspended circular spiral on-chip inductors onto MOSIS RF circuit chips of LNA and VCO using a multi-layer UV-LIGA technique including SU-8 UV lithography and copper electroplating. A high frequency simulation package, HFSS, was used to determine the layout of MEMS on-chip inductors wi...

Article history: Received 19 December 2015 Accepted 29 February 2016 Available online 3 March 2016 This paper presents the design, fabrication and characterization of ultra-thin inductors using a new class of multilayered ferromagnetic-polymer composite structures asmagnetic cores. Themultilayered composite structures comprise of high-permeability, high saturation magnetization (Ms N 0.5 T), lo...

An analysis of phase noise in differential crosscoupled inductance–capacitance (LC) oscillators is presented. The effect of tail current and tank power dissipation on the voltage amplitude is shown. Various noise sources in the complementary cross-coupled pair are identified, and their effect on phase noise is analyzed. The predictions are in good agreement with measurements over a large range ...