A Gallium Nitride (GaN)-Based Single-Inductor Multiple-Output (SIMO) Inverter With Multi-Frequency AC Outputs

Jin, Weijian; Lee, Albert Ting Leung; Tan, Siew‐Chong; Hui, S. Y. Ron

doi:10.1109/tpel.2019.2896649

Cited by 20 publications

(8 citation statements)

References 20 publications

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“…The probe is realized by a lowly-doped n-type well surrounded by a grounded p-type well to ensure electric isolation from the substrate. The use of an n-well as the active sensing region is preferable to a p-well because it leads to higher current-related sensitivity SI according to [4] and [5]. The encapsulation of the n-type well in the p-type well is unavoidable in bulk technologies, and it generates a nonuniform depletion region surrounding the active region that: i) creates a parasitic capacitance effect, ii) introduces asymmetries in the sensor, since the thickness of the depletion region is proportional to the local bias potential.…”

Section: A Topological Aspects Of the X-hall Probementioning

confidence: 99%

“…M. Crescentini, G. P. Gibiino, A. Romani, M. Tartagni and P. A. Traverso are with the Department of Electrical, Electronic and Information Engineering (DEI) "G. Marconi", Bologna and Cesena Campuses, University of Bologna, power devices [1], [2], which are able to operate at high frequencies and high power rates, and by the emerging of very fast response (VFR) applications, such as dynamic voltage scaling in microprocessors [3], [4] and high-frequency AC inverters [5]. In VFR applications, the power converter must be able to change the output voltage in the microsecond scale and beyond, requiring voltage and current measurements with very fine time resolutions.…”

Section: Introductionmentioning

confidence: 99%

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The X-Hall Sensor: Toward Integrated Broadband Current Sensing

Crescentini

Ramilli

Gibiino

et al. 2021

IEEE Trans. Instrum. Meas.

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This paper presents the X-Hall sensor, a viable sensing architecture for implementing a silicon-integrated, broadband, current/magnetic sensor. The X-Hall sensor overcomes the bandwidth limit of the state-of-the-art Hall sensors by replacing the spinning-current technique with DC-biasedbased, passive offset compensation. In this way, the X-Hall architecture removes the methodological bandwidth limit due to the spinning-current technique and allows for exploiting the Hall probe up to its practical limit, which is set by the parasitic capacitive effects. Moreover, the X-Hall architecture allows to push the practical bandwidth limit at higher frequencies due to both the removal of the switches inherent in the spinning-current approach and a specifically designed analog front-end. To this end, a differential-difference current-feedback amplifier (DDCFA) is proposed as analog front-end in the X-Hall sensor. A prototype of the proposed X-Hall architecture is implemented in BCD 0.16-µm silicon technology to experimentally assess the performance of the X-Hall architecture. The passive offset compensation implemented into the X-Hall architecture is frequency independent and preserves an adequate offset reduction performance, though less efficient than the spinning-current technique operated at low frequency. Experimental dynamic tests on the prototype identify the presence of an additive parasitic dynamic perturbation due to the package that prevents from fully exploiting the X-Hall prototype up to its designed bandwidth limit. However, the implementation of a post de-emphasis digital filter allows to mitigate for the dynamic perturbation and to experimentally achieve a sensor bandwidth of 4 MHz, which is the broadest bandwidth ever demonstrated by a purely Hall-effect based sensor.

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Section: A Topological Aspects Of the X-hall Probementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The X-Hall Sensor: Toward Integrated Broadband Current Sensing

Crescentini

Ramilli

Gibiino

et al. 2021

IEEE Trans. Instrum. Meas.

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“…Concurrently, the interest in charging devices wirelessly is also growing at a rapid pace. The Qi (100-205 kHz) and Airfuel (277-357 kHz & 6.78 MHz) are the two rival interface standards developed for near-field wireless power transfer (WPT) systems [3].…”

Section: Introductionmentioning

confidence: 99%

Microdosimetry in a realistic keratinocyte cell model at mmWave and HF frequencies

Haider

Dréan

Sauleau

et al. 2022

2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)

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Wide spread of millimeter-wave (mmWave) and wireless power transfer (WPT) technologies opens new challenges in terms of characterization of bioelectromagnetic interactions. The objective of this study is to investigate quantitatively the induction of such electromagnetic radiation within cells at 6.78 MHz and 60 GHz respectively. A realistic model of the keratinocyte, which takes into account the complex morphologies and volume fraction of organelles, was developed. The finite element method (FEM) was used to solve the Laplace's equation under quasi-static approximation. The results show that the power loss density (PLD) within the cellular and subcellular compartments increases with frequency due to diminished shielding effect of the membranes. At 60 GHz and 6.78 MHz, the average power loss density (PLDavg) within the cellular and subcellular organelles is about six and three orders of magnitude higher than that at 1 kHz. Also, in comparison to the background PLDavg within cytoplasm (CP), the intracellular traffic through the nuclear pores (Np) is submitted to three orders of magnitude higher exposure level at 6.78 MHz and 2.5 times higher exposure level at 60 GHz.

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“…Power transfer at multiple frequencies have been implemented in various applications e.g. high-voltage dc-dc converters [9], [10], smart-grid [11]- [13], wireless power transfer [14], [15], ac motor drives [16], etc,. In [10], an additional frequency is used to implement nestled secondary power loop in a modular multilevel converter (M2C) to add multiple sources to M2C.…”

Section: Introductionmentioning

confidence: 99%

“…It employs a universal ac-dc converter at the load end to deliver power at the desired frequency. In [14], [15], multi-frequency (MF) voltages are generated for the wireless charging of vehicles. In [16], novel topologies are proposed for an ac drive to realize a unity power factor single-phase to three-phase MF converter with a motor load.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Multifrequency Power Electronic Converters: Concept, Architectures, and Realization

Chitransh

Shetty

Das

et al. 2021

IEEE J. Emerg. Sel. Topics Power Electron.

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There exists two well known types of power transfer ac or dc. Power transfer at multiple frequencies has not yet gained much attention. This paper aims at bringing out such topologies, which are capable of integrating different electrical power sources (ac or dc) irrespective of its frequency of generation, form a multi-frequency bus, transmit power over a single line and extract/convert them at the load side. This leads to the definition of unified utility/grid concept. For this, the paper presents more insight into three possible multi-frequency converter topologies with renewable energy sources (RESs)/battery integration. The proposed topologies work on the principle of orthogonal power transfer. Furthermore, power transfer at multiple frequencies shows an effective way of decoupling the individual sources of the system. Finally, the feasibility of transferring power at multiple frequencies is validated experimentally and the results are discussed herein along with its potential benefits.

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A Gallium Nitride (GaN)-Based Single-Inductor Multiple-Output (SIMO) Inverter With Multi-Frequency AC Outputs

Cited by 20 publications

References 20 publications

The X-Hall Sensor: Toward Integrated Broadband Current Sensing

The X-Hall Sensor: Toward Integrated Broadband Current Sensing

Microdosimetry in a realistic keratinocyte cell model at mmWave and HF frequencies

Evaluation of Multifrequency Power Electronic Converters: Concept, Architectures, and Realization

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