PCB integrated inductors for low power DC/DC converter

Ludwig, Matthias; Duffy, Maeve; O’Donnell, Terence; McCloskey, Paul; Mathúna, S. Cian Ó

doi:10.1109/tpel.2003.813757

Cited by 81 publications

(21 citation statements)

References 9 publications

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“…The general power-system-on-chip approach has been explored for a long time [81], [82], but commercial implementation is recent.…”

Section: G Internal Levelmentioning

confidence: 99%

Data Center Challenges and Their Power Electronics

Krein

2017

CPSS TPEA

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Abstract-Data centers use more than 1.5% of all electricity in China and the U.S., with continuing growth. This paper reviews the power hierarchy levels within modern data centers. It considers energy consumption and power electronics challenges across all levels of a data center, including building distribution, dc architectures, and conversion down to the board level. Power electronics plays a central role throughout the hierarchy, and emerging approaches are described. Strategies that enhance center energy efficiency, both in terms of overall center operation and in terms of computation performance, are discussed.Index Terms-Data centers, dc distribution, dc-dc converters, server racks, power utilization factor, dc power architecture, digital power.

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“…The general power-system-on-chip approach has been explored for a long time [81], [82], but commercial implementation is recent.…”

Section: G Internal Levelmentioning

confidence: 99%

Data Center Challenges and Their Power Electronics

Krein

2017

CPSS TPEA

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“…It is proposed to use the circuit in single-shot mode. It is desirable to use an integrated inductor, and inductance values in the range 1-10 H appear to be achievable [15], [16]. The discharge of the generator will occur in a short current pulse and controlling this current through chopping would require a high switching frequency and associated losses.…”

Section: Power Processingmentioning

confidence: 99%

Converter circuit design, semiconductor device selection and analysis of parasitics for micropower electrostatic Generators

Stark

Mitcheson

Miao

et al. 2006

IEEE Trans. Power Electron.

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Abstract-For various medical monitoring and sensing applications it is desirable to power the electronics by scavenging energy from any locally available source. An electrostatic motion-driven generator for low-frequency (human body) motion has been developed by the authors using microelecromechanical system technology. The prototype generates pulses of 250 V on a 10-pF capacitor. This paper examines the design of a circuit and semiconductor devices to convert this energy to a low voltage. Because of the very small charge involved, the effects of leakage and parasitic stored charge are important. Converters for this application using silicon-on-insulator metal-oxide-semiconductor field-effect transistors and insulated gate bipolar transistors are compared using physics-based finite-element simulation. The overall effectiveness of the generation process is shown to be composed of several terms which are functions of system parameters such as generator flight time, semiconductor device area, and circuit inductance. It is shown that device area is a compromise between leakage current, charge storage, and on-state voltage. It can, for a given generator and inductance, be optimized to provide the maximum energy yield. Parasitic series inductance is shown to be of little importance to the circuit efficiency; however, parasitic capacitance has a significant influence.Index Terms-Buck converter, insulated gate bipolar transistor (IGBT), lateral power semiconductor device, microelecromechanical system (MEMS), micro generator, micropower electrostatic generators, metal-oxide semiconductor field-effect transistor (MOSFET), silicon-on-insulator (SOI).

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“…However, in order to achieve the device miniaturization, thin magnetic films with high saturation magnetization have to be integrated on the PCB substrate. Much of the previous work in the area of PCB magnetics have focused on developing different inductor structures including racetrack, spiral, toroidal [1][2][3][4][5][6]. In recent years, the researchers have investigated implementation of planar inductor structures without magnetic cores [7,8].…”

Section: Introductionmentioning

confidence: 99%