A Broadband Multi-Mode Compressive Sensing Current Sensor SoC in 0.16&lt;inline-formula&gt; 
                     &lt;tex-math notation="LaTeX"&gt;$\mu$ &lt;/tex-math&gt;
                  &lt;/inline-formula&gt;m CMOS

Bellasi, David E.; Crescentini, Marco; Cristaudo, D.; Romani, Annalisa; Tartagni, Marco; Benini, Luca

doi:10.1109/tcsi.2018.2846573

Cited by 12 publications

(2 citation statements)

References 54 publications

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“…Current sensors are critical components of modern power electronic circuits and systems. They are used in many different applications, e.g., in the control feedback loop of power converters [1,2], for monitoring and diagnostic purposes in complex power systems [3,4], or in metering functions for smart grids and smart homes [5,6]. The target application sets particular specifications on current sensors, which are ideally required to be small, lossless, accurate, broadband, low-power, or display a combination of such features [7,8].…”

Section: Introductionmentioning

confidence: 99%

Static Characterization of the X-Hall Current Sensor in BCD10 Technology

Gibiino¹,

Crescentini²,

Marchesi³

et al. 2022

Proceedings of the 25th IMEKO TC4 International Symposium and 23rd International Workshop on ADC and DAC Modelling and Testing

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This work presents on-wafer characterization measurements of the X-Hall current sensor architecture implemented in 90-nm BCD10 silicon process by STMicroelectronics. With respect to a previous implementation, technological improvements in terms of active region, isolation layers, and metal stack configuration result in a substantially improved sensitivity. In addition, it is reported that the sensitivity can be further improved by applying a negative voltage to the depletion layer.

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Section: Introductionmentioning

confidence: 99%

Static Characterization of the X-Hall Current Sensor in BCD10 Technology

Gibiino¹,

Crescentini²,

Marchesi³

et al. 2022

Proceedings of the 25th IMEKO TC4 International Symposium and 23rd International Workshop on ADC and DAC Modelling and Testing

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“…The Rogowski coil (RC) [3] and the current transformers (CTs) [4], [5] are competent in terms of realizable bandwidth (up to GHz) [6], but the resulting sensor is bulky, difficult to integrate, and loses the dc signal component. Differently, compactness and integrability in microelectronic substrates are achieved by Hall-effect current sensors, which offer the advantages of sensitivity to dc signals and galvanic isolation [2], [7], but can barely reach the MHz range in bandwidth [8], [9], [10] and may require additional back-end processes or exotic materials for improved performance [11], [12]. To overcome these drawbacks, the state-of-the-art broadband current sensing techniques have adopted hybrid solutions by combining RC or CT with compact Hall-effect current sensors [13], [14].…”

mentioning

confidence: 99%

A Wideband and Low-Noise CMOS-Integrated X-Hall Current Sensor Operating in Current Mode

Syeda

Crescentini

Marchesi

et al. 2023

IEEE Trans. Instrum. Meas.

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Power electronic circuits are moving toward higher switching frequencies, exploiting the capabilities of novel devices, so as to shrink the dimension of the passive components. This trend demands sensors able to operate at such high frequencies. This article aims to demonstrate the broadband capability of a fully integrated CMOS current sensor based on the X-Hall approach and configured in current mode, by alleviating the impact of stray capacitive loading at the probe-readout interface. Current-mode operation enables the usage of a transimpedance amplifier (TIA) as a readout circuit, offering better bandwidth, noise, and power performance than conventional instrumentation amplifiers (IAs). The system exploits a common-mode (CM) control system to operate the submodules at different supply voltages, respectively, 5 V for the X-Hall probe to achieve high sensitivity, and 1.2 V for the readout to exploit the high transition frequency of transistors with reduced oxide thickness. A chip-onboard mounting limits the parasitic inductive effects on the host printed circuit board (PCB). The developed prototype achieves a maximum acquisition bandwidth of 12 MHz. With a power consumption of 11.46 mW and a resolution of 39 mA rms , it presents a sensitivity of 8% T −1 and achieves an FoM of 569 MHz/A 2 mW, which is significantly higher than the current state-of-the-art hybrid Hall/coil solutions. The prototype is implemented in a 90-nm microelectronic process from STMicroelectronics and occupies a silicon area of 2.4 mm 2 .

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Battery‐less RF‐powered circuits for non‐contact voltage monitoring of electric systems: Circuit modeling and SPICE analysis

Colella,

Catarinucci,

Grassi

2024

Circuit Theory & Apps

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Monitoring electric power systems is essential for avoiding disruptions, improving efficiency, and detecting faults. Traditional methods involve interrupting the power lines and pose safety risks. On the contrary, non‐contact power meters allow for safe power measurement without touching the wires but designing them presents challenges related to battery life and sustainability. This paper introduces a novel battery‐less RF‐powered wireless circuit that overcomes these limitations and optimizes the performance of the sensing of the voltage. This circuit includes an efficient RF‐DC converter, a designed non‐contact flexible and curved AC voltage sensor, a signal conditioning circuit, a digital processing unit, and a passive UHF Radio‐Frequency Identification interface for wireless communication. It harnesses electromagnetic energy from the radio front end to power the entire system. The circuit has been properly conceptualized, developed, and analyzed through electrical modeling and SPICE simulations. Transient and steady‐state analyses have been carefully conducted on individual circuit blocks to analyze their electric characteristics. Finally, a proof‐of‐concept circuit has been realized and experimentally verified to validate the simulation outcomes. With a bandwidth of 3 kHz, an RF‐DC conversion sensitivity of −16 dBm, a current consumption of only 2.2 mA, and an efficient power management procedure, this energy‐autonomous, non‐contact metering circuit offers very high RF and sensing sensitivities and ultra‐low power consumption, making it ideal for monitoring AC electric systems, particularly in inaccessible environments where battery‐based solutions are impractical.

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A Broadband Multi-Mode Compressive Sensing Current Sensor SoC in 0.16<inline-formula> <tex-math notation="LaTeX">$\mu$ </tex-math> </inline-formula>m CMOS

Cited by 12 publications

References 54 publications

Static Characterization of the X-Hall Current Sensor in BCD10 Technology

Static Characterization of the X-Hall Current Sensor in BCD10 Technology

A Wideband and Low-Noise CMOS-Integrated X-Hall Current Sensor Operating in Current Mode

Battery‐less RF‐powered circuits for non‐contact voltage monitoring of electric systems: Circuit modeling and SPICE analysis

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