This study proposes a novel methodology for quantifying losses in wireless power transfer systems (WPTs). By employing circuit model derived from just three finite element simulations (FEM), it enables the separation of loss contributions magnetic and mechanical components across all operating conditions. streamlined approach proves highly effective, providing thorough analysis with minimal computational effort, thereby facilitating optimization part that represents bottleneck this type...

Data center electricity consumption increases rapidly as computation moves into the cloud computing. Power management has become crucial for next generation of data centers. To implement more efficient power conversion systems 48 V dc at rack level recently been adopted ensuring higher overall efficiency. I such kind distribution to 12 step-down converters are required telecom and automotive applications. In general this is made with a fix ratio dc-dc converter LLC obtains ZVS turn-on all...

Data center electricity consumption has been rapidly increasing in the last few years as computation moves into cloud computing [1]. With introduction of 48 V power-delivery architecture a two-stage approach is commonly adopted where regulation established at second-stage level with an unregulated first stage. Typically stage fix ratio dc-dc converter, such LLC or switching-capacitor converter. In this paper novel non-isolated hybrid switched capacitor resonant converter proposed for...

The rack-level 48 V bus architecture is wide-spreading as modern Data Center architectures move towards the cloud computing and Internet of Things Era. Increasing power demands require low-profile, high-density server board solutions able to efficiently step down input distribution digital rails. Intermediate Bus Converters (IBCs) are usually implemented though soft-switching resonant topologies such non-regulated LLCs, while core voltage regulation achieved through a multi-phase buck VRM....

High Voltage (HV) overhead power lines are systems of interconnected elements that deliver massive amounts electrical energy over long distances. Electrical conductors, used as carriers, designed according voltage, current, and temperature rated value. Monitoring the line's state variables is emerging a crucial topic aiming at both determining optimal real-time capability defining suitable model for Health Index assessment. A Wireless Sensor Network (WSN), consisting many distributed sensor...

In order to increase the efficiency of modern microprocessor power supplies used in data centers, 380-V dc distribution systems have been attracting attention due their high and reliability. This paper presents an innovative single-stage approach for voltage regulator modules (VRMs) based on a quasi-resonant multilevel topology constant on-time operation. The proposed inherently integrates multiphase approach, providing fast phase shedding flat high-efficiency curves even at light-load...

During last decade biomedical devices have become more and performing, covering an increasing number of usages. In particular, subcutaneous represent one the most invasive yet innovative application; their battery management is challenging topics because, once implanted, they can be handled only through surgery, so wireless charge way to feed systems with appreciable energy in a controlled manner. But differently from conventional consumer devices, this scenario delivered necessarily runs...

This article presents a novel control system for regulated resonant switched-capacitor point-of-load converter, together with its steady-state and small-signal analyses. The output voltage is through combined frequency/phase shift on-chip controller that operates, thanks to zero-crossing detector the tank current. By using such technique, regulation can be achieved wide range of conversion ratios. Different operation modes are adopted maximize efficiency at every load condition. A prototype...

The 48 V bus architecture has become a wide-spread standard in modern Data Centers, due to the increasing power demands of digital loads. This trend low-profile, high-density server board solutions able efficiently step down input distribution rails. Intermediate Bus Converters (IBCs) are required step-down voltage for VRM: this stage is facing an always-decreasing core voltage, and benefits from lower intermediate terms efficiency device reliability. In scenario, high-step-down with...

In server AI application one of the biggest bottlenecks to keep up calculation capability is power management, hence high density and efficiency supply are required. 48 V power-delivery architecture has been promoted replace 12 [1] where a two-stage approach commonly adopted. First stage typically implemented with an unregulated converter such as LLC or STC [2]. converters matrix transformer suitable for these applications, however, isolation not needed non-isolated resonant hybrid switched...

Radiation- and magnetic field tolerant DCDC converters that step down the voltage from a 2.5 V bus are needed for High-Luminosity detectors. This work presents developed prototypes, based on ASICs designed in 130 nm CMOS technology. A buck converter (bPOL2V5) is close to production readiness, showing an 89.7% peak efficiency tolerance 200 Mrad of Total Ionizing Dose (TID) fluence 10 16 n/cm 2 . lower-volume alternative bPOL2V5 (called rPOL2V5) uses resonant switched-capacitor architecture...

The rack-level 54/48 V bus architecture is spreading as modern data center architectures move toward the cloud computing and Internet-of-Things Era. Increasing power demands require low-profile, high-density server board solutions able to efficiently step down input distribution digital rails. Intermediate converters (IBCs) are usually implemented through soft-switching resonant topologies such nonregulated LLCs, while core voltage regulation achieved a multi-phase buck module (VRM)....

A prototype second-stage buck DC-DC converter has been designed in 130 nm CMOS and fully characterized. This circuit provides up to 3 at an adjustable output voltage of 0.6-1.5 V from intermediate bus 2.5 V. Hardening-by-design techniques have systematically used, the successfully passed TID irradiation 200 Mrad (SiO2) Single Event Effects tests with a heavy ion beam. Safe integration on-board requires optimized PCB design bump-bonding assembly reduce parasitic inductances along input current path.

The 48 V bus architecture has become a standard in modern data centers, due to the increasing power demands of digital loads. This requires low-profile, high-density intermediate converters, able efficiently step-down input bus. Usually, this wide variation (40–60 V), and voltage regulation module (VRM) must withstand whole converted range, with negative impact on efficiency design oversizing. A regulated converter can address issue, enabling fine-tuned VRM design. In article, novel hybrid...

Data center electricity consumption has been in-creasing rapidly in the last few years as computation moves into cloud computing [1]. In order to reduce conduction losses DC bus, recently 48 V proposed replace existing 12 bus voltage. an attempt adapt old infrastructure with new one a DC-DC converter can provide interface between and regulated rail. This paper focuses on novel cascaded consisting of resonant switched capacitor dual phase three-level buck converter, which intrinsically...

This paper proposes an innovative non-complementary control method for active clamp flyback converter. The proposed recovers the leakage inductance energy and achieves soft switching all switches, while obtaining a lower RMS current compared to previous complementary or noncomplementary methods. In order improve power density reducing profile of transformer, planar transformer with PCB-litz windings is developed this

This paper proposes an integrated regulated resonant switched-capacitor DC-DC converter for a 2.5 V to 1.2 V, 3 A conversion designed in 130 nm CMOS technology. The voltage is through combined frequency/time shift on-chip controller that operates thanks zero-crossing detector the tank current. By using such control technique, output greater than <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">in</sub> /2 can be reached. circuit also implements...

Digital ASIC devices are widely used in networking and computing applications. This kind of is implemented with a short-channel technology requiring high peak currents for complexity systems low supply voltage. ASICs powered by an external voltage regulator specifications similar to modern microprocessors’ power [voltage regulation modules (VRMs)]. In order reduce the number pins distribution network (PDN) issue, Intel’s Fourth-Generation Core integrates regulators. Moreover, many on-package...

In high-power LED driver system a single stage boost-LLC AC-DC converter is usually adopted to obtain good efficiency with low cost. However, are only available for bus voltage due the PFM control strategy. A two-stage approach PFC as first and dc-dc quasi-resonant from 380 V 12 in this work. The proposed DC-DC implements two-phase driving implementing current sharing, enabling ZVS operation both at primary side secondary side. controller IC has been implemented 0.16 um lithography together...

This paper proposes an innovative receiver coil structure for wireless power charging suitable portable devices with thickness constraint. Litz wires represent the best solution high-efficiency transfer but cannot be implemented in a thin structure. In this will presented and optimized planar structures narrow profile. The performances of coils were tested measurements system alignment misalignment conditions.

Several applications are migrating to a 48-V power-delivery architecture, including hyper-scale data-centers and artificial intelligence (AI) server-racks power distribution. High level trends of AI pushes computation aggressively towards sensors actuators, opening considerable research business development windows. Within the new intermediate bus converter (IBC) solutions so called hybrid switched capacitor (HSC) [1] for high efficiency density becoming essential. To increase IBC robustness...

This paper proposes an innovative simulation software-based approach for wireless power transfer circuit modeling. The main characteristic of the methodology is extraction equivalent a given positioning coils precise estimation losses. An important feature modeling type loss (conduction, eddy current and core) their location (TX/RX winding or TX/RX core). All losses will be represented as dissipated by resistors present in model generated software. tested comparison prediction with...