A <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">CLL</i> resonant converter with transformer–inductor-integrated magnetics is proposed. The derived by placing the inductor of an xmlns:xlink="http://www.w3.org/1999/xlink">LLC</i> on secondary side transformer. In comparison converter, circulating current associated magnetizing transformer removed from inductor. More importantly, phase difference between flux in magnetic cores and becomes...

Abstract Background The conflict between the Chinese fossil fuel-based economy and worsening environmental conditions requires further research to be carried out. Due their clean, highly-efficient flexible properties, distributed energy systems (DESs) have become a global focus in field of conservation. China, as largest coal-fired user highest power consumer world, has conduct apply DESs resolve conflict. This study aims provide comprehensive review DES development China well improvement...

A transformer-inductor-integrated magnetic structure with PCB-winding is presented for a GaN-based CLL resonant converter. In comparison conventional LLC converter, the inductor of converter placed on secondary side transformer to eliminate circulating current-related losses. Core losses both and are reduced by sharing common plate between them. To suppress common-mode noise induced PCB-winding, part primary windings used as shielding layers, symmetrical PCB winding implemented 10:2 turns...

This paper presents a new phase detector in an all digital locked loop which converts the difference between one reference clock edge and divided oscillator into word. word can be converted representation of actual error utilized loop. 6 ps resolution for this Time-to-Digital Converter (TDC) is realized standard 0.13 μm CMOS technology. Its Full-Scale-Range (FSR) 4500 ps.

A cost-effective totem-pole power factor correction converter with high-frequency gallium nitride high electron-mobility transistors and low-frequency Si diodes is investigated in this article. The reverse recovery characteristics of are evaluated experimentally. With the slow characteristics, a negative current can flow through low frequency diode, so that soft-switching critical mode operation achieved easily. However, if duration exceeds time diode will switch at frequency, leading to...

This paper presents a new structure of Pulse Shrinking Time-to-Digital Converter (TDC) with 20ps resolution which is implemented in Infineon 0.13 μm CMOS technology. The interpolating multi-stage TDC feedback loop and high speed counter accelerates the digitization input time interval appropriate as Phase Detector for Locked Loop application. interpolated efficiently saves chip area power consumption. Its Full-Scale-Range (FSR) about 5000 ps its differential linearity errors are less than 0.52LSB.

Printed-circuit-board (PCB) winding planar transformers have been widely adopted in isolated high-efficiency and high-power-density converters. Inserting the shielding layer is an effective method to attenuate common-mode noise induced by large interwinding capacitance of PCB winding. This letter identifies that a part magnetic flux will pass through due planarized structure transformer. Furthermore, generation mechanism distribution eddy current related loss are revealed. In order reduce...

A universal integration method for the magnetic components (MCs) of multiple resonant converters is proposed in this article. Two rules independent MCs are summarized, one which to keep functional after integration, while other achieve lower loss and volume through integration. Following by dividing an MC into winding-part nonwinding-part, achieved sharing nonwinding-part MCs. An input-series output-parallel (ISOP) converter taken as example show how accomplished step step. It shown that,...

With the continuous development of power supplies toward miniaturization, light weights, and high levels integration, research on high-frequency resonant conversion based planar magnetics is becoming extensive.Combining soft-switching characteristics converters with those wide bandgap devices, switching frequency can be increase to MHz range, density entire system improved considerably.However, higher frequencies impose new requirements for structural design, loss distribution, common mode...

In this work, we introduce a type of plasma antenna that was fabricated using flexible materials and excited 5−20 kHz alternating current (ac) power supply. The results showed the characteristics, including impedance, reflection coefficient (S11), radiation pattern, gain, can be controlled rapidly easily by varying both discharge parameters shapes. scope for reconfiguration is greatly enhanced when shape changed from monopole to helix configuration. Additionally, polarization also adjusted

A single-phase ac-dc converter with dual-output rectifier (DOR) and dual-input dc transformer (DI-DCX) is proposed in this paper. voltage-split/sigma principle adopted, that is, the grid voltage split into two variable bus voltages first by front-stage DOR, then are combined an adjustable output downstream DI-DCX. DC directly regulated front-end rectifier. Therefore, no regulation required for dc-dc stage, a DI-DCX optimized operation condition employed to improve overall efficiency of...

The Polymer Optical Interconnect Technology (POINT) represents a major collaborative effort among GE, Honeywell, AMP, AlliedSignal, Columbia University and the of California at San Diego (UCSD), sponsored by ARPA, in developing affordable optoelectronic module packaging interconnect technologies for board- backplane- level optical applications wide range military commercial applications. POINT program takes novel development approach fully leveraging existing electronic design, processing,...

As we know, submersible motor which works underground is powered by long cable. This will lead to a series of problems, such as overvoltage and high-frequency oscillation damping. To facilitate the effective suppression terminal overvoltage, transmission line theory distributed parameter thought are adopted into voltage analysis. Based on system modeling, specific function factors that affect including cable length, PWM pulse rising time reflection coefficient given verified simulation....

By 2024, the photovoltaic industry will have solidified its position as a strategic emerging in China. Photovoltaic power stations are deploying solar panels extensively, necessitating utmost maintenance of their cleanliness and implementation dust removal measures these areas. This is crucial minimizing loss light energy conversion, thus enhancing overall efficiency system. Through experimental methods dynamic static spraying cleaning, well numerical simulations based on internal external...

The technical approach and progress achieved under the Polymer Optical Interconnect Technology (POINT) program are described in this paper. POINT is a collaborative effort among GE, Honeywell, AMP, AlliedSignal, Columbia University, University of California at San Diego (UCSD), sponsored by DARPA/ETO, to develop affordable optoelectronic packaging interconnect technologies for board backplane applications. Specifically, reported on (a) development batch-operated plastic VCSEL array...

Electronic compass is often used to provide the absolute heading reference for tracking user's head and hands in virtual reality (VR) augmented (AR), especially outdoor AR applications. However, vulnerable environment magnetism disturbance. Existing calibration methods require complex steps true which impossible be obtained applications, useful only when horizontal plane. An autocalibration method without need of redundant sensors proposed This work. First error model based on physical...

A key issue in proceeding the digitization of phase-locked loops (PLLs) is realization proper phase detectors digital domain. This paper presents simulative analysis properties and requirements for time-to-digital converters (TDCs) used comparison digitized fractional-N modulators with two-point modulation. Effects due to quantization TDC on frequency synthesis as well GSM modulation quality are considered, defining a transmitter

With the development of electric vehicles (EVs), EV onboard power converters are expected to pursue higher density and lower height. Compared with active devices, passive magnetics seems be main restriction for efficiency density. In distribution system, two-stage configurations Buck + LLC converter widely employed in various electronic equipment, which requires multiple magnetics. On this basis, integration two has been studied reduce overall cost improve First, buck interleaved operate...

PCB-winding-based planar inductors have been widely adopted for the high frequency, power density, and efficiency conversion. Due to planarized structure of magnetics, position air gaps in a inductor not only dominates flux distribution magnetic core, but also impacts winding window. Therefore, both core loss are strongly related gaps. The window four-poles coupled critical-mode (CRM) Buck converter analyzed detail. An optimized with improved configuration is proposed reduce loss, as well...

Optical interconnects at the cabinet-to-cabinet, board-to-board, and multichip module-to- module levels will enable future avionics systems requirements to be met by eliminating undesirable compromises associated with electrical interconnects. Fiber optics is well established medium of choice for cabinet-to-cabinet applications, while planar polymeric are required backplane level. Significant advances have been made in demonstrating practical polymer compatible existing board fabrication...

Due to the explosive growth in high speed network communication and rapid advance processor processing power, data transfer bandwidths between chips, modules, board, backplane cabinets have increased drastically. The required interconnect for efficient across different platforms accordingly. optical offers a much higher bandwidth density with minimum cross-talk. However, order successfully deploy complex electronic systems such as board offer performance/cost comparable of superior...

Optimal design of the planar integrated inductor is presented for a hybrid totem-pole bridgeless power factor correction (PFC) converter with high frequency GaN-based switching leg and low Si-diode-based leg. The PFC can be up to MHz by adopting critical mode (CRM) soft-switching operation mode. In order achieve lower height density, split into two small inductors then implemented magnetic core. Footprint loss different core structure are analyzed compared. method as well. Finally, 700kHz...

In this paper, we describe a novel approach for fabrication of low-cost optoelectronic modules optical interconnect applications. The concept includes: (1) placement and electrical components on common substrate using chip-first MCM structure to improve thermal handling capabilities, (2) both interconnects planar processes compatible standard IC in manufacturing reduce nonrecurring engineering costs, (3) application adaptive device-to-waveguide alignment recurring packaging costs....