Abstract Biomaterials capable of transmitting signals over longer distances than those in rigid electronics can open new opportunities for humanity by mimicking the way tissues propagate information. For seamless mirroring human body, they also have to display conformability its curvilinear architecture, as well as, reproducing native‐like mechanical and electrical properties combined with ability self‐heal on demand like native organs tissues. Along these lines, a multifunctional composite...

This paper presents the design, modeling, and control of an isolated dc-dc three-port converter (TPC) based on interleaved-boost full-bridge with pulsewidth modulation (PWM) phase-shift for hybrid renewable energy systems. In proposed topology, switches are driven by phase-shifted PWM signals, where both phase angle duty cycle controlled variables. The power flow between two inputs is through cycle, whereas output voltage can be regulated effectively shift. primary-side MOSFETs achieve...

The ongoing demand for smaller and lighter power supplies is driving the motivation to increase switching frequencies of converters. Drastic increases however, come along with new challenges, namely losses in all components. application circuits used radio frequency transmission equipment helps overcome those. However, those were not designed meet same requirements as This paper summarizes contributions recent years very high (VHF) technologies electronics, which show results advances...

Abstract Many production lines can be viewed as a series of work stations with inter-station storage (or buffers). Consideration finite queues permits evaluating inefficiencies in terms the queue capacity at each station; mean servicing work) times station and their distribution; numbers stations. A simple rationale numerically valid predicting formula is developed by considering first, whole class balanced two systems secondly, effect Numerical comparisons are made results Hillier & Boling...

The integration of power inductors is a roadblock in realizing highly miniaturized supply package (PSiP) and on chip. Inductors such systems are used for energy storage filtering, but they dominate size loss. This paper presents novel three-dimensional in-silicon through-silicon via (TSV) magnetic-core toroidal inductor PSiP. magnetic powder based core embedded into TSV air-core using casting method. unique design with hollow suspended windings enables complete filling microscale powders....

Abstract Proteins present an ecofriendly alternative to many of the synthetic components currently used in electronics. They can therefore combination with flexibility and electroactivity uncover a range new opportunities field flexible green In this study, silk‐based ionic conductors are turned into stable thin films by embedding them 2D nanoclay platelets. More specifically, material is utilized develop motion‐sensitive touchscreen device. The display‐like sensor readily transmit light,...

This paper describes the analysis and design of a DC-DC converter topology which is operational at frequencies in Very High Frequency (VHF) band ranging from 30 MHz-300 MHz. The presented topology, consists class E inverter, rectifier, self-oscillating gate driver, inherently resonant, switching losses are greatly reduced by ensuring Zero Voltage Switching (ZVS) power semiconductor devices. A method to ensure ZVS operation when combining driver provided. Several parasitic effects their...

This paper presents the design of a resonant converter with switching frequency in very high range (30-300 MHz), large step down ratio (ten times), and low output power (1 W). Several different inverters rectifiers are analyzed compared. The class E inverter rectifier selected based on complexity efficiency estimates. Three stages implemented; one input inductor, switch small capacitances, on-resistance. designed same specifications efficiencies from 60.7-82.9% achieved.

This paper presents a very high frequency DC/DC converter for LED lighting. Several resonant topologies are compared and their usability discussed. At the end SEPIC is chosen based on achievable power density total bill of material. Simulations 51 MHz with 40 V input 15 output made. The simulation shows possibility achieving efficiency up to 87 % even HEXFET Power MOSFET. Three prototypes simulated implemented showing good correlation simulations. have efficiencies 84 densities 8.9 W/cm <sup...

Abstract We report a fabrication technology for 3D air-core inductors small footprint and very-high-frequency power conversions. Our process is scalable highly generic fabricating with wide range of geometries core shapes. demonstrate spiral, solenoid, toroidal inductors, transformer inductor advanced that cannot be produced by wire winding technology. The are embedded in silicon substrate consist through-silicon vias suspended windings. fabricated 20 25 turns 280-350 μm heights on 4-16 mm 2...

This paper presents the first, off chip, class DE (resonant half bridge) converter working in Very High Frequency (VHF) range. The benefits of using bridge circuits both inverter and rectifier part a VHF resonant dc/dc are analyzed design equations for all components power stage given. circuit has been simulated to verify accuracy presented an efficiency 89% shown. A prototype implemented with self-oscillating gate drives driving switches. used drive LED string shows 85% at 29 MHz 130 V...

Today's consumer electronics are made from nonrenewable and toxic components. They also rigid, bulky, manufactured in an energy-inefficient manner via CO2-generating routes. Though petroleum-based polymers such as polyethylene terephthalate naphthalate can address the rigidity issue, they have a large carbon footprint generate harmful waste. Scalable routes for manufacturing that both flexible ecofriendly (Fleco) could challenges field. Ideally, substrates must incorporate into without...

This paper presents an efficiency optimization approach for a high-voltage bidirectional flyback dc-dc converter. The main goal is to optimize the converter driving capacitive actuator, which must be charged and discharged from 0 V 2.5 kV dc vice versa, supplied 24 supply. energy optimized using proposed new automatic winding layout (AWL) technique comprehensive loss model. AWL generates large number of transformer layouts. parasitics, such as resistance, leakage inductance, self-capacitance...

This paper presents a new self-oscillating resonant gate drive composed solely of passive components. The can be used in various converters and inverters for both low high side drive. examples how higher order harmonics to improve the performance implemented class E inverter, DE inverter with synchronous rectifier. shows practical implementations all proposed operating Very High Frequency (VHF) range, showing good results peak efficiency up 82% output regulation from 70% full load without bursting.

Miniaturization of power supplies is required for future intelligent electronic systems, e.g., Internet-of-Things devices. Inductors play an essential role, and they are by far the most bulky expensive components in supplies. This paper presents a miniaturized microelectromechanical system (MEMS) inductor its performance very highfrequency (VHF) converter. The MEMS silicon-embedded air-core toroidal inductor, it constructed with through-silicon vias, suspended copper windings, silicon...

This paper describes a galvanic isolated bidirectional Very High Frequency (VHF = 30 MHz - 300MHz) Class-E converter. The reason for increasing the switching frequency is to minimize passive components in To make converter topology rectifier has be synchronous. increases complexity of gate drives, which this solved by using self-oscillating drive. A been implemented and described paper; reaches efficiencies above 80% forward conduction mode 73.5% reverse mode. designed operates at 35.6 MHz,...

Increasing the switching frequency for switch mode power supplies is one of methods to achieve smaller, lighter weight and cheaper converters. This work investigates opportunity using two layer circular spiral inductors implemented in a 150 μm finished thickness printed circuit board high DC-DC converter. The inductor was tested 5 W buck converter at 10 MHz. achieved 84.7% peak efficiency converting 12 V 78% 24 V.

The converter control scheme plays an important role in the performance of maximum power point tracking (MPPT) algorithms. In this paper, input voltage with double loop for a stand-alone photovoltaic system is designed and tested. inner current high crossover frequency avoids perturbations load being propagated to panel thus deviating operating point. Linearization state-space modeling performed. order achieve stable operation under all conditions, linearized at (MPP) source regions. A...

As research and development of renewable clean energy based systems is advancing rapidly, the nonlinear source emulator (NSE) becoming very essential for testing maximum power point trackers or downstream converters. Renewable sources play important roles in both terrestrial nonterrestrial applications. However, most existing NSEs have only been concerned with simulating applications, which may not be fast enough In this paper, a high-bandwidth NSE developed that able to simulate behaviors...

This paper presents design and implementation of the phase-shift burst-mode control method for interleaved self-oscillating resonant SEPIC converters LED lighting applications. The proposed utilizes delays in turn-on turn-off power stage circuitry order to reduce requirements comparator regulation circuit. is experimentally evaluated on a 49 MHz dc-dc converter prototype, results are presented. designed demonstrates peak efficiency 81%, maintains above 75% from 20% load full load,...

This article presents the analysis and design of a resonant power factor correction (PFC) rectifier for first stage in single-phase front-end offline converters targeting low-power applications (up to 100 W). With addition charge-pump circuit comprised capacitor diode class-DE converter, PFC functionality is achieved inherently. The operation based on soft switching, allowing increased switching frequencies with reduced losses. A 1-MHz prototype employing wide bandgap devices built tested...

This paper presents an analysis and comparison of isolated topologies for bidirectional fuel cell systems. The analyzed are the dual active bridge (DAB) full boost converter (IFBBC). is performed based on component stress factor (CSF). Results highlight that DAB has lower CSF than IFBBC narrow operating points. On other hand a more homogeneous over entire range. Finally, experimental results obtained from 30-80 V 80 A 6 kW 40 kHz presented. achieves efficiencies up to 98.2% 97.45% depending...

The ongoing demand for smaller and lighter power supplies is driving the motivation to increase switching frequencies of converters. Drastic increases however come along with new challenges, namely losses in all components. application circuits used radio frequency transmission equipment helps overcome those. However those were not designed meet same requirements as This paper summarizes contributions recent years very high (VHF) technologies electronics, describes remaining challenges shows...

In an isolated power supply, the inter-winding parasitic capacitance plays a vital role in mitigation of common mode noise currents created by fast voltage transient responses. The lower transformer capacitance, more immune supply is to This requirement even critical for modular stacking applications which multiple supplies are stacked. paper addresses issue presenting detailed analysis and design unconventional that uses ring core with very low 10 pF. Considering its output 300 W, this...

This paper presents a power supply using an increased switching frequency to minimize the size of energy storing components, thereby addressing demands for densities in supplies, and 100-MHz higher frequencies have been used resonant converters, which along with possible integration passive components on silicon wafer present beneficial solution applications such as mobile phones. design 9-W class E converter 0.18-μm CMOS process. The is driven by self-oscillating gate drive, presented...