Capacitors

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A Two-Stage 12–1-V Converter Featuring Regulated Resonant SC Regulators and Collaborative Control Scheme

A Two-Stage 12–1-V Converter Featuring Regulated Resonant SC Regulators and Collaborative Control Scheme 150 150
Author(s): Shengdao Ren, Yukan Du, Menglian Zhao, Zhichao Tan, Chushan Li, Yong Ding, Wuhua Li, Wanyuan Qu

Abstract:

In the field of power converters for data centers, the two-stage architecture has received widespread attentions due to its various advantages. Especially, the switched-capacitor voltage regulator (SCVR) becomes popular as the second-stage converter owing to its high efficiency and power density. However, the SCVR suffers from poor voltage regulation and …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3609744
Publisher: IEEE

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A Fast Transient Response Fully Integrated LDO With a Novel Resetting Oscillator Control Method

A Fast Transient Response Fully Integrated LDO With a Novel Resetting Oscillator Control Method 150 150
Author(s): Masoud Kargaran, Amir Besharati Rad, Ali Medi

Abstract:

This article introduces a novel resetting oscillator regulator (ROR) control method for low-dropout (LDO) regulators, designed to achieve fast settling times for both load and reference input steps. The proposed ROR integrates a high-speed loop that independently functions as an oscillator in a closed-loop configuration, along with a separate high-rate …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 13
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3607941
Publisher: IEEE

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A 38.1 fJ/Bit Capacitive-Latch True Random Number Generator Featuring Both Autozeroed Inverter Mismatch and Accelerated Evaluation

A 38.1 fJ/Bit Capacitive-Latch True Random Number Generator Featuring Both Autozeroed Inverter Mismatch and Accelerated Evaluation 150 150
Author(s): Woojin Lee, Changmin Sim, Changjoo Kim, Jinwoo Jeon, Hyundo Jung, Taihyun Kim, Chulwoo Kim

Abstract:

This work presents a capacitive-latch (C-latch) true random number generator (TRNG) that achieves both inverter mismatch autozeroing and accelerated evaluation by utilizing coupling capacitors. The proposed C-latch TRNG samples the mismatch between inverter equalization voltages through coupling capacitors during the equalization phase, effectively autozeroing inverter mismatch and enabling high-entropy raw …

Published in: IEEE Solid-State Circuits Letters
Page(s): 265 – 268
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3608187
Publisher: IEEE

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Design and Verification of Low Parasitic MOS Capacitors With Series Connected Tri-Well Junctions

Design and Verification of Low Parasitic MOS Capacitors With Series Connected Tri-Well Junctions 150 150
Author(s): Zhendong Li, Yongjuan Shi, Yifan Jiang, Chen Hu, Junting Chen, Mengyuan Hua, Xun Liu, Junmin Jiang

Abstract:

This letter presents a tri-well implementation of MOS capacitors designed to tackle the challenge of high parasitic capacitance. By serially connecting the three parasitic well junction capacitors between the three wells (N-Well, deep P-Well, and deep N-Well) and substrate (PSUB), the parasitic capacitance can be significantly decreased. A higher bias …

Published in: IEEE Solid-State Circuits Letters
Page(s): 277 – 280
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3608282
Publisher: IEEE

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LIF Neuron Based on a Charge-Powered Ring Oscillator in Weak Inversion Achieving 201 fJ/SOP

LIF Neuron Based on a Charge-Powered Ring Oscillator in Weak Inversion Achieving 201 fJ/SOP 150 150
Author(s): Javier Granizo, Ruben Garvi, Ricardo Carrero, Luis Hernandez

Abstract:

This letter presents the experimental results of a leaky-integrate-and-fire neuron (LIF) neuron based on time-domain analog circuitry. This kind of neuron is the core of spiking neural network (SNN) used in edge applications. Edge applications require power-efficient neuron designs whose power consumption is extremely low when idle, and low when …

Published in: IEEE Solid-State Circuits Letters
Page(s): 249 – 252
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3603335
Publisher: IEEE

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A 0-to- 10μF Off-Chip Output Capacitor-Scalable Boost Converter Achieving 96.68% Peak Efficiency

A 0-to- 10μF Off-Chip Output Capacitor-Scalable Boost Converter Achieving 96.68% Peak Efficiency 150 150
Author(s): Hyeon-Ji Choi, Joo-Mi Cho, Hyo-Jin Park, Seok-Jun Lee, Sung-Wan Hong

Abstract:

This letter presents an off-chip output capacitor (CO)-scalable (OCS) boost converter. The proposed OCS boost converter is possible to operate both with and without the off-chip CO. In addition, it operates in a whole conversion ratio (CR) range over 1 while maintaining a small current ripple of an inductor, resulting …

Published in: IEEE Solid-State Circuits Letters
Page(s): 233 – 236
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3594739
Publisher: IEEE

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Polar-Axis Orientation Fluctuations and the Impact on the Intrinsic Variability in Ferroelectric Capacitors

Polar-Axis Orientation Fluctuations and the Impact on the Intrinsic Variability in Ferroelectric Capacitors 150 150
Author(s): Wei Zhang, Jianze Wang, Xuanyao Fong

Abstract:

We utilized phase-field simulations to investigate the effects of polar-axis (PA) orientation fluctuations on the extrinsic properties of single ferroelectric (FE) grains, focusing on the coercive electrical field (EC) and the remnant polarization (Pr). The underlying mechanisms through which PA orientation fluctuations influence polarization behavior are studied to gain insights …

Published in: IEEE Journal on Exploratory Solid-State Computational Devices and Circuits
Page(s): 74 – 80
Year of Publication: 2025
Electronic ISSN: 2329-9231
DOI: 10.1109/JXCDC.2025.3586589
Publisher: IEEE

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A 2 pA/ √Hz Input-Referred Noise TIA in 180-nm CMOS With 2.5GHz Bandwidth for Optical Receiver

A 2 pA/ √Hz Input-Referred Noise TIA in 180-nm CMOS With 2.5GHz Bandwidth for Optical Receiver 150 150
Author(s): Yihao Yang, Dan Li, Nan Qi, Binhao Wang

Abstract:

This letter describes an ultra-low-noise, high-speed transimpedance amplifier (TIA) applied to the analog front-end (AFE) circuit of the high-sensitivity optical receiver. A combination of a three-stage amplifier and two positive feedback Miller capacitors is introduced to comprehensively reduce the input-referred noise current (IRNC) of a shunt-feedback TIA (SFTIA) and to …

Published in: IEEE Solid-State Circuits Letters
Page(s): 1 – 1
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3584266
Publisher: IEEE

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Reconfigurable Ferroelectric Bandpass Filter With Low-Frequency Noise Analysis for Intracardiac Electrogram Monitoring

Reconfigurable Ferroelectric Bandpass Filter With Low-Frequency Noise Analysis for Intracardiac Electrogram Monitoring 150 150
Author(s): Jianwei Jia, Zhenge Jia, Omkar Phadke, Yiyu Shi, Shimeng Yu

Abstract:

Implantable cardioverter defibrillators (ICDs) provide real-time monitoring and immediate defibrillation for life-threatening arrhythmias. However, the intracardiac electrogram (IEGM) acquisition of ICDs faces stringent constraints, including power consumption, low-frequency noise, and patient-specific physiological variability. This article introduces an ultralow-power, high-resolution, reconfigurable three-stage bandpass filter designed specifically for IEGM, utilizing ferroelectric field-effect …

Published in: IEEE Journal on Exploratory Solid-State Computational Devices and Circuits
Page(s): 67 – 73
Year of Publication: 2025
Electronic ISSN: 2329-9231
DOI: 10.1109/JXCDC.2025.3584711
Publisher: IEEE

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