Journal articles: 'Wide range voltage'

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Hu, Yongchuan, Chenghu Zhao, Jianjun Xu, et al. "Colored PDLC Films with Wide Gamut Range." Crystals 13, no. 8 (2023): 1216. http://dx.doi.org/10.3390/cryst13081216.

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Due to the discoloration properties under different applied voltages, dye-doped polymer-dispersed liquid crystal (PDLC) films are widely used as camouflage nets and invisibility cloaks. However, the range of the discoloration has an intuitive effect on their applications. In this work, we studied the gamut range of PDLC film doped with dyes of red, green, blue, and yellow, with the concentration corresponding to the minimum haze of these dyes. The influence of the applied voltage on the color range of single-layer and double-layer films with different backgrounds was studied. The relationship of the voltage with the color was set from 0 V to 60 V at steps of 5 V, to characterize the discoloration of the PDLC films. The results showed that the films could cover 42.48% of the sRGB gamut and even exceed the range.

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Cheng, Hong, Xin Li, Cong Wang, Zhihao Zhao, Yucheng Shen, and Wei Yuan. "SEPIC-Boost-Based Unidirectional PFC Rectifier with Wide Output Voltage Range." Electronics 13, no. 2 (2024): 357. http://dx.doi.org/10.3390/electronics13020357.

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A novel unidirectional hybrid PFC rectifier topology based on SEPIC and boost converters is proposed, which is applicable to various industrial applications such as electric vehicle charging stations, variable speed AC drives, and energy storage systems. Compared to other rectifiers, the proposed SEPIC-boost-based rectifier exhibits continuous current on the AC side, lower voltage stress on the active switches, a wider range of DC output voltage, no auxiliary DC-DC converters, and a high step-up static voltage gain operating with low input voltage and a low step-up static gain for the high-input-voltage operation. These traits allow the SEPIC-boost-based rectifier to utilize smaller input-side harmonic filtering inductors and adopt active switches with lower voltage ratings, resulting in reduced conduction losses. Additionally, the proposed rectifier features power factor correction and high boost/buck voltage-gain capabilities, simplifying control for electric vehicle charging and expanding its range of applications. In this paper, the operating principle of the novel topology is presented first, and then the mathematical model of the proposed rectifier is built. Based on this, the comparison between the proposed topology and conventional boost and SEPIC converters is given. Furthermore, the control strategy, including the high-power-factor control and the balancing control to the DC capacitor voltages, is discussed. Finally, to validate the accuracy of the proposed rectifier’s theoretical research, a 500-W SEPIC-boost rectifier system has been constructed in the laboratory, generating a 200/120 Vdc output voltage from a 155 Vpk/50 Hz power source.

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Sujito, Huu-Duy Tran, You-Cyuan Wei, and Hung-Yu Wang. "Novel wide dynamic range current mirror." Modern Physics Letters B 33, no. 14n15 (2019): 1940045. http://dx.doi.org/10.1142/s0217984919400451.

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A novel cascode current mirror for low-voltage application with larger input dynamic range is presented. The proposed mirror circuit combines the advantages of wide input swing, wide output swing and large output resistance capability. It is suitable for low-voltage and low-power application. Simulation results show that the circuit work properly for the input current ranges of 10 [Formula: see text]A to 1 mA and bandwidth is 5.02 GHz for 1 mA DC component.

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Lanuzza, Marco, Pasquale Corsonello, and Stefania Perri. "Fast and Wide Range Voltage Conversion in Multisupply Voltage Designs." IEEE Transactions on Very Large Scale Integration (VLSI) Systems 23, no. 2 (2015): 388–91. http://dx.doi.org/10.1109/tvlsi.2014.2308400.

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Ožvold, M., and Š. Lányi. "Low-operating-voltage wide-range bimorph scanners." Physica Status Solidi (a) 131, no. 1 (1992): 101–4. http://dx.doi.org/10.1002/pssa.2211310117.

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Norioka, S., T. Miyokawa, S. Goto, T. Niikura, and S. Sakurai. "Field emission SEM with wide operating voltage range." Proceedings, annual meeting, Electron Microscopy Society of America 46 (1988): 976–77. http://dx.doi.org/10.1017/s0424820100106946.

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A newly developed conical anode field emission electron gun (FE-GUN)has been installed on the JSM-840F Scanning Electron Microscope (SEM). The cross sectional view of the column is shown in Fig. 1. The gun is usable at a wide accelerating voltage range from 0.5 kV to 40 kV, and is suitable for general purpose SEMs. The gun can be used within the virtual source range even at an extract voltage as high as 7 kV and an accelerating voltage as low as 0.5 kV. The extract voltage can be raised up to 7 kV even when the emitter tip radius becomes larger after repeated flashing for smoothing the emitter tip surface. This allows elongation of the emitter life.With the FE-GUN, since the electron source (virtual source) moves with accelerating voltage change, an image may disappear due to the deviation of the electron probe from the optical axis when the accelerating voltage is changed.

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Lim, Jeong-Woo, Hanyoung Bu, and Younghoon Cho. "Novel Dead-Time Compensation Strategy for Wide Current Range in a Three-Phase Inverter." Electronics 8, no. 1 (2019): 92. http://dx.doi.org/10.3390/electronics8010092.

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This paper proposes a novel three-phase voltage source inverter dead-time compensation strategy for accurate compensation in wide current regions of the inverter. In particular, an analysis of the output voltage distortion of the inverter, which appears as parasitic components of the switches, was conducted for proper voltage compensation in the low current region, and an on-line compensation voltage controller was proposed. Additionally, a new trapezoidal compensation voltage implementation method using the current phase was proposed to simplify realizing the trapezoidal shape of the three-phase compensation voltages. Finally, when the proposed dead-time compensation strategy was applied, the maximum phase voltage magnitude in the linear modulation voltage regions was defined to achieve smooth operation even at high modulation index. Simulations and experiments were conducted to verify the performance of the proposed dead-time compensation scheme.

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Gong, Cihun-Siyong Alex, and Long-Xi Chang. "A Wide-Range Charge Controller for Solar Sensor." Journal of Circuits, Systems and Computers 24, no. 07 (2015): 1550108. http://dx.doi.org/10.1142/s021812661550108x.

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The solar energy conversion driven by the solar sensor (or the so-called solar cell) has become an important and feasible way to solve global energy crisis while at the same time minimizing environmental pollution. The solar charge controller is the key of its active system for the signal processing circuits involved. In this paper, a fully integrated solar charge controller is presented. The charger has wide input voltage range about 10–28 V for the solar-powered panel. The input loop regulation is used here as the maximum power point tracking protection. This charger also provides different kinds of battery voltages about 4–12 V. The controller system uses just one error amplifier (EA) and no external compensation components is needed. Besides, this controller has 600-kHz pulse-width modulation (PWM) and offers the over-current/over-voltage protection. Other components like bandgap, reference generator, saw-tooth generator, register controller and driver circuits are all implemented in this circuit. This chip is fabricated in a 0.4-μm 5 V/40 V 2P4M process. The power consumption of this full-integrated solar charge controller IC is about 10 mA.

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Zhou, Guowei, Xin Chen, Hong Zheng, Jiaqi Yin, and Chenguang Peng. "Wide-Frequency Range Voltage Monitoring Device for Current Transformer." Journal of Physics: Conference Series 2450, no. 1 (2023): 012004. http://dx.doi.org/10.1088/1742-6596/2450/1/012004.

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Abstract To optimize the online voltage monitoring technology of the power grid and realize real-time fault warning for the power grid and capacitive devices such as current transformers (CT), this paper proposes a wide-frequency range voltage monitoring method based on current transformers according to the idea of measuring the leakage current of capacitive devices to restore the line voltage. The method measures the current transformer leakage current to invert the bus voltage and uses a wide frequency range current sensor to meet the measurement of high-frequency waveforms. This paper designs a CT wide-frequency range voltage monitoring device based on this method and conducts field tests of the device’s measurement effects. Through the fault monitoring test and voltage monitoring test, it is verified that the monitoring device is fully functional and can achieve accurate monitoring of harmonics, end shield current, relative dielectric loss, high-frequency partial discharge, and bus-voltage with high amplitude and high frequency, which can provide support for fault analysis and insulation design improvement and is of great significance to ensure safe and stable operation of the power grid.

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Lin, Bor-Ren, and Kun-Yi Chen. "Hybrid LLC Converter with Wide Range of Zero-Voltage Switching and Wide Input Voltage Operation." Applied Sciences 10, no. 22 (2020): 8250. http://dx.doi.org/10.3390/app10228250.

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A new hybrid inductor-inductor-capacitor (LLC) converter is investigated to have wide voltage input operation capability and zero-voltage turn-on characteristics. The presented circuit topology can be applied for consumer power units without power factor correction or with long hold-up time requirement, photovoltaic energy conversion and renewable energy power transfer. To overcome the weakness of narrow voltage gain of resonant converter, the hybrid LLC converter with different turns ratio of transformer is presented and the experimental investigation is provided to achieve wide voltage input capability (400 V–50 V). On the input-side, the converter can operate as full bridge resonant circuit or half bridge resonant circuit with input split capacitors for high or low voltage input region. On the output-side, the less or more winding turns is selected to overcome wide voltage input operation. According to the circuit structures and transformer turns ratio, the single stage LLC converter with wide voltage input operation capability (400 V–50 V) is accomplished. The laboratory prototype has been developed and the experimental waveforms are measured and demonstrated to investigate the effectiveness of the presented hybrid LLC converter.

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Ashoori, Ehsan, Derek Goderis, Anna Inohara, and Andrew J. Mason. "Wide Voltage Swing Potentiostat with Dynamic Analog Ground to Expand Electrochemical Potential Windows in Integrated Microsystems." Sensors 24, no. 9 (2024): 2902. http://dx.doi.org/10.3390/s24092902.

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Electrochemical measurements are vital to a wide range of applications such as air quality monitoring, biological testing, food industry, and more. Integrated circuits have been used to implement miniaturized and low-power electrochemical potentiostats that are suitable for wearable devices. However, employing modern integrated circuit technologies with low supply voltage precludes the utilization of electrochemical reactions that require a higher potential window. In this paper, we present a novel circuit architecture that utilizes dynamic voltage at the working electrode of an electrochemical cell to effectively enhance the supported voltage range compared to traditional designs, increasing the cell voltage range by 46% and 88% for positive and negative cell voltages, respectively. In return, this facilitates a wider range of bias voltages in an electrochemical cell, and, therefore, opens integrated microsystems to a broader class of electrochemical reactions. The circuit was implemented in 180 nm technology and consumes 2.047 mW of power. It supports a bias potential range of 1.1 V to −2.12 V and cell potential range of 2.41 V to −3.11 V that is nearly double the range in conventional designs.

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Zhang, Dezhen, Zhen Ouyang, Wei Ma, Xiang Shen, Jinwei Lv, and Yangxin Zou. "Modulation of Wide Voltage Range Interface DC-DC Converter in DC Distribution System." American Journal of Electrical Power and Energy Systems 13, no. 2 (2024): 21–31. http://dx.doi.org/10.11648/j.epes.20241302.11.

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Bipolar DC distribution systems rely on various power sources like photovoltaics and distributed energy storage, each with its unique voltage characteristics. To accommodate these fluctuations, interface converters must adjust over a wide voltage range. The bipolar non-isolated DC-DC converter emerges as a promising solution due to its versatile modulation capabilities, reduced switch voltage stress, and cost-effectiveness. This article explores how wide voltage range regulation is achieved in bipolar DC-DC converters interfacing with bipolar DC power grids. It delves into the operational strategies and modulation techniques employed, ensuring stable output despite varying input voltages. Design considerations and challenges associated with implementing such converters are also discussed. An experimental platform was constructed to validate the proposed methodology. Through rigorous testing and analysis, the effectiveness of the topology&apos;s operation mode was confirmed. Real-world data from the experimental setup provided insights into the converter&apos;s performance under different operating conditions, supporting its applicability for bipolar DC distribution systems. In summary, this article provides a comprehensive examination of wide voltage range regulation in bipolar DC-DC converters, highlighting their potential to enhance efficiency and reliability in bipolar DC power grids. Through theoretical discussions and practical validation, it contributes to the advancement and adoption of these converters in modern energy systems.

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Stork, Milan. "Sinusoidal and Relaxation Wide Range Voltage Controlled Oscillators." Communications - Scientific letters of the University of Zilina 17, no. 1A (2015): 83–88. http://dx.doi.org/10.26552/com.c.2015.1a.83-88.

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DHEERAJ, Alagu, and Rajini VEERARAGHAVALU. "Center Clamp for Wide Input Voltage Range Applications." IEICE Transactions on Electronics E102.C, no. 1 (2019): 77–82. http://dx.doi.org/10.1587/transele.e102.c.77.

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Cao, Jiankun, Haichun Liu, Pengling Ding, Binbin Yang, and Shaojun Xie. "Wide Correction Range Three-Level Dynamic Voltage Corrector." IEEE Transactions on Power Electronics 31, no. 9 (2016): 6217–25. http://dx.doi.org/10.1109/tpel.2015.2501827.

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Shahbazi, Karim, and Alireza Hassanzadeh. "A Wide Tuning Range CMOS Voltage Controlled Oscillator." Electrical and Electronics Engineering: An International Journal 3, no. 2 (2014): 91–100. http://dx.doi.org/10.14810/elelij.2014.3207.

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Drozdowski, Piotr, and Dariusz Cholewa. "Voltage Control of Multiphase Cage Induction Generators at a Speed Varying over a Wide Range." Energies 14, no. 21 (2021): 7080. http://dx.doi.org/10.3390/en14217080.

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The subject of this publication is a method of controlling the DC voltage of a PWM rectifier supplied by a multiphase cage induction generator with the number of stator phases greater than three operating in a wide range of driving speeds. Voltage regulation is performed by changing the frequency and amplitude of the stator voltages with simultaneous switching of the phase sequence of these voltages. The step change of the voltage sequence is made in the designated ranges of the generator speed, which enables the stabilization of the output voltage in a wide range from the minimum speed of about 25% of the rated speed. Such sequence switching changes the number of pole pairs produced by the winding for each supply sequence. The difference compared to multi-speed induction machines is that, in the presented solution, there is only one winding, not a few, which enables good use of the machine’s magnetic core in the same dimensions as for the three-phase machine of a similar power. Steady-state characteristics and dynamic operation were obtained using laboratory measurements of a standalone nine-phase induction generator. The automatic control system maintained the output voltage at the set level, regardless of the generator load and driving power.

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Li, Zhening, and Shengming Huang. "A wide input range capacitor-free LDO circuit." Journal of Physics: Conference Series 2810, no. 1 (2024): 012023. http://dx.doi.org/10.1088/1742-6596/2810/1/012023.

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Abstract A wide input range LDO circuit is proposed and designed based on the Xintang 0.35uBCD process in this paper. Without an external output capacitor, the designed LDO has a stable 5 V output voltage at an input range of 5-16 V input. The LDO has low overshoot voltage and fast recovery time. Meanwhile, design improvements have been made to the bandgap reference generator. Adopting an amplifier-free structure, this bandgap reference generator can stably generate a reference voltage of 1.24 V with a temperature coefficient of 10.58 ppm/°C. The LDO circuit can drive a maximum load of 30 mA. When the load is 30 mA, the LDO has a power suppression ratio of 83.01 dB at 1 KHz. It has a high loop gain, and the phase margin reaches 65°.

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Zawawi, Ruhaifi Bin Abdullah, Wajahat H. Abbasi, Seung-Hwan Kim, Hojong Choi, and Jungsuk Kim. "Wide-Supply-Voltage-Range CMOS Bandgap Reference for In Vivo Wireless Power Telemetry." Energies 13, no. 11 (2020): 2986. http://dx.doi.org/10.3390/en13112986.

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The robustness of the reference circuit in a wide range of supply voltages is crucial in implanted devices. Conventional reference circuits have demonstrated a weak performance over wide supply ranges. Channel-length modulation in the transistors causes the circuit to be sensitive to power supply variation. To solve this inherent problem, this paper proposes a new output-voltage-line-regulation controller circuit. When a variation occurs in the power supply, the controller promptly responds to the supply deviation and removes unwanted current in the output path of the reference circuit. The proposed circuit was implemented in a 0.35-μm SK Hynix CMOS standard process. The experimental results demonstrated that the proposed reference circuit could generate a reference voltage of 0.895 V under a power supply voltage of 3.3 V, line regulation of 1.85 mV/V in the supply range of 2.3 to 5 V, maximum power supply rejection ratio (PSRR) of −54 dB, and temperature coefficient of 11.9 ppm/°C in the temperature range of 25 to 100 °C.

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Lin, Bor-Ren, and Yong-Sheng Zhuang. "Hybrid Resonant Converter with Three Half-Bridge Legs for Wide Voltage Operation." Applied Sciences 10, no. 1 (2019): 310. http://dx.doi.org/10.3390/app10010310.

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This paper studied a hybrid resonant converter with three half bridge legs for wide input voltage operation. Compared to the conventional resonant converters with narrow voltage operation, the presented converter can achieve wider voltage operation. On the basis of the proper switching status of power switches, the developed converter can operate at half-bridge resonant circuit under high input voltage range and the other two full-bridge resonant circuits under medium and low input voltage ranges. Each resonant circuit has a 2:1 (Vin,max = 2Vin,min) input voltage operation range. Therefore, the developed converter can achieve an 8:1 (Vin,max = 8Vin,min) wide voltage operation. The main advantage of the studied converter is the single-stage direct current (DC)/DC power conversion instead of the two-stage power conversion to achieve wide voltage operation. Because the equivalent resonant tank of the adopted converter is controlled by frequency modulation, the soft switching operation on power switches or rectifier diodes can be realized to improve circuit efficiency. The performance of the proposed circuit was confirmed and verified by experiments with a laboratory circuit.

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Arslan, Saad, Syed Asmat Ali Shah, and HyungWon Kim. "An Ultra-Wide Load Range Voltage Converter Using Proactive Phase Frequency Modulation for IoT Sensors." Sensors 20, no. 21 (2020): 6279. http://dx.doi.org/10.3390/s20216279.

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Modern sensor nodes have multiple operating states, which causes a conventional voltage converter to perform poorly over a wide load range of the operating states. This paper proposes a voltage converter whose switching frequency and output voltage are proactively adjusted to maintain high conversion efficiency. This allows the converter to exploit a wider frequency range to cover a wide load range. In addition, the proposed converter uses multiple smaller capacitor banks and employs multiphase operation to provide low output ripple voltage. A distributed topology for non-overlapping signal generation is proposed and used in the converter to minimize the number of wires running from connecting the controller to the converter. The proposed voltage converter has been implemented in a chip using a 0.13 um CMOS process. The measurement results demonstrate the ability to support a wide load range of 10 µA to 10 mA, for switching frequencies ranging from 100 kHz to 200 MHz, while providing an efficiency of above 80%.

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Tie, Ruifang, Deqi Li, Yuan Xu, Ningye He, and Fuwei Shen. "Design of a Low Power and Wide Frequency Range Ring VCO." Journal of Engineering System 2, no. 2 (2024): 32–38. http://dx.doi.org/10.62517/jes.202402206.

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This paper proposes a low-power, wide frequency range ring VCO circuit structure based on the application of switch power supply modulation technology. Circuit simulation is completed based on CMSC 180nm BCD process. Simulation results show that the VCO circuit can work at a power supply voltage of 3-5 V, and it has a relatively wide frequency range. Under a 5V power supply voltage and a control voltage range of 4.2V~2.2V, the output frequency range is 0.4-11.96MHz. Under a 3V power supply voltage and a control voltage of 2.2V~0.2V, the output frequency range is 0.56~12.3MHz. For the VCO circuit, the maximum average working current of the power supply is less than 80uA, and the average current of the power supply is only 35uA under a 5V power supply voltage and a 10MHz working frequency. The VCO circuit meets the requirements of low power consumption. It can be applied to switch power supply chips.

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Mamadalimov, Abdugafur T., Makhmudkhodja Sh Isaev, Tokhirjon U. Atamirzaev, Shamsiddin N. Ernazarov, and Mukhtor K. Karimov. "CVC Structure of PtSi - Si<Pt>-M in a Wide Range of Temperatures." East European Journal of Physics, no. 2 (June 1, 2024): 358–61. http://dx.doi.org/10.26565/2312-4334-2024-2-43.

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In this work the mechanism of current flow during illumination with hν≥Eg in the temperature range of 77÷300 K is considered. It is established that in the PtSi – Si<Pt>-M structure in the temperature range of 77÷270 K the regime of space charge limited currents (SCLC) is realized. The current-voltage characteristics of the structures show areas of linear and quadratic dependences of current on voltage, as well as areas of a sharp increase in current. These features of the current-voltage characteristic are explained by the presence of deep level structures and sticking levels for charge carriers in the base region. From the temperature dependence of the SCLC, the concentration of adhesion levels was determined to be equal to (1.8÷3) 1015 cm-3 and the adhesion factor to be equal to 6.32·10-2. In the temperature range 77÷115 K at voltages 0.2÷1 V, the current-voltage characteristic obeys the law J ~ Un(n=3÷4), and above U – the law J ~ U6, followed by a transition to the quadratic law.

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Thitayanuwat, Watchara, and Bunlung Neammanee. "Wide Input Voltage Range 2kW Flyback Resonant Converter Design for Wind Turbine." Applied Mechanics and Materials 110-116 (October 2011): 2437–41. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2437.

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This paper presents a design of wide input voltage range 2 kW flyback resonant converter for the wind turbine system. The propose converter design for operated under zero voltage switch, it could increase the efficiency of system by reducing the turn on switching loss. The advantages of this converter can be operated in a wide input voltage range, isolation and used a few devices. From the simulation result with PSpice software and experimentation results are conform together which shows the designed circuit can be operated under zero voltage with high efficiency and wide input voltage range (90-240V), by the simulation results can be used for the specified rate of power semi-conductor devices.

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Zhao, Qinglin, Na Wu, Yujie Wang, Deyu Wang, and Qiuxia Yang. "Bidirectional multi‐resonant converter with a wide voltage range." IET Power Electronics 14, no. 4 (2021): 851–61. http://dx.doi.org/10.1049/pel2.12069.

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Mohan, Manju, and Bini D. "Wide Range Voltage to Frequency Converter using PSoC3 Microcontroller." International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 03, no. 09 (2014): 11898–904. http://dx.doi.org/10.15662/ijareeie.2014.0309052.

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Khokhlov, K. O., G. K. Khokhlov, A. V. Ishchenko, A. N. Cherepanov, and A. S. Naronov. "Electric Power Converter with a Wide Input Voltage Range." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1221. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1221-1227.

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The electric power converter for downhole telemetry systems of oil-well pumps include a downhole block connected to the pump that contains electronic circuits required for the operation of the motor pump sensors and transmission of data about their condition to the surface are described. A few methods of electric power conversion for this purpose are considered. The circuit contained two steps of voltage converting are proposed. The electrical scheme of this method is considered in the article. Proposed decisions are simulated and verified experimentally. The input high supply voltage range (200-4200 V) without loss of efficiency (even temporary) was obtained. The results of simulation and experimental studies have shown very close results.

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Khokhlov, Konstantin, Georgy Khokhlov, Aleksey Ishchenko, Alexander Cherepanov, and Alexander Naronov. "Electric Power Converter with a Wide Input Voltage Range." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 4 (2016): 1269. http://dx.doi.org/10.11591/ijpeds.v7.i4.pp1269-1275.

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<span lang="EN-US">The electric power converter for downhole telemetry systems of oil-well pumps include a downhole block connected to the pump that contains electronic circuits required for the operation of the motor pump sensors and transmission of data about their condition to the surface are described. A few methods of electric power conversion for this purpose are considered. The circuit contained two steps of voltage converting are proposed. The electrical scheme of this method is presented in the article. Proposed method is simulated and verified experimentally. The input high supply voltage range (200-4200 V) without loss of efficiency (even temporary) was obtained. The results of simulation and experimental studies have shown very close results.</span>

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Sang Hou *, A., and J. L. Lin. "Voltage-controlled isolated linear resistors with wide operation range." International Journal of Electronics 92, no. 12 (2005): 697–707. http://dx.doi.org/10.1080/00207210500171588.

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Mathew, M., B. L. Hart, K. Hayatleh, and F. J. Lidgey. "Low-voltage, wide-range, current-controlled DC current generator." International Journal of Electronics 98, no. 8 (2011): 1123–27. http://dx.doi.org/10.1080/00207217.2011.582422.

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Zhang, Yi, Donglai Zhang, Jie Li, and Hongyu Zhu. "Bidirectional LCLL Resonant Converter With Wide Output Voltage Range." IEEE Transactions on Power Electronics 35, no. 11 (2020): 11813–26. http://dx.doi.org/10.1109/tpel.2020.2986505.

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Gorchakov, A. V., M. G. Astashev, D. I. Panfilov, A. N. Rozhkov, I. I. Zhuravlev, and A. V. Chasov. "A Sinusoidal Voltage Controller with a Wide Adjustment Range." Russian Electrical Engineering 94, no. 6 (2023): 412–19. http://dx.doi.org/10.3103/s1068371223060068.

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Lin, Bor-Ren. "Resonant Converter with Soft Switching and Wide Voltage Operation." Energies 12, no. 18 (2019): 3479. http://dx.doi.org/10.3390/en12183479.

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A new DC/DC resonant converter with wide output voltage range operation is presented and studied to have the benefits of low switching losses on active devices and low voltage stresses on power diodes. To overcome serious reverse recovery losses of power diodes on a conventional full-bridge pulse-width modulation converter, the resonant converter is adopted to reduce the switching loss and increase the circuit efficiency. To extend the output voltage range in conventional half-bridge or full-bridge resonant converters, the secondary sides of two diode rectifiers are connected in series to have wide output voltage operation. The proposed converter can be either operated at one-resonant-converter mode for low voltage range or two-resonant-converter mode for high voltage range. Thus, the voltage rating of power diodes is decreased. Experiments with the design example are given to show the circuit performance and validate the theoretical discussion and analysis.

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Uno, Masatoshi, Koyo Iwasaki, and Koki Hasegawa. "Series-Parallel Reconfiguration Technique with Voltage Equalization Capability for Electric Double-Layer Capacitor Modules." Energies 12, no. 14 (2019): 2741. http://dx.doi.org/10.3390/en12142741.

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Voltage variations of electric double-layer capacitors (EDLCs) are rather wider than those of traditional rechargeable batteries, and an energy utilization ratio of EDLCs is dependent on cells’ voltage variation ranges. To satisfactorily utilize EDLCs’ energies, voltages of EDLC modules should be within a certain range, while cells need to be charged and discharged over the wide voltage range. To this end, various kinds of series-parallel reconfiguration techniques based on balance- and unbalance-shift circuits have been proposed, but conventional techniques can only be applied to modules consisting of even number cells, impairing the design flexibility and scalability. With the unbalance-shift circuits, cell voltages are unavoidably mismatched due to unequal currents, resulting in reduced energy utilization ratios. This article proposes a novel series-parallel reconfiguration technique with voltage equalization capability for EDLC modules. The proposed technique can be applied to any number of cells, improving design flexibility and scalability. Furthermore, since the proposed circuit behaves as a switched capacitor converter, in which all cells are virtually connected in parallel, cells are equally charged and discharged without causing voltage imbalance, realizing the improved energy utilization ratio. A prototype for an EDLC module comprising four cells, each with a rated charging voltage of 2.5 V, was built and experimentally tested. The module voltage varied in the range of 3.2–5.0 V, while all cells were uniformly discharged down to as low as 0.8 V, achieving the energy utilization ratio of 90%.

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Song, Hourong, Branislav Hredzak, and John Fletcher. "Inductor-Based Active Balancing Topology with Wide Voltage Range Capability." Batteries 11, no. 2 (2025): 77. https://doi.org/10.3390/batteries11020077.

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With the increasing number of batteries integrated into the grid, the electrification of transportation, and the importance of reusing secondary batteries to preserve natural resources, active balancing techniques are becoming critical for optimizing battery performance, ensuring safety, and extending their lifespan. There is a demand for battery management solutions that can efficiently manage the balancing of battery cells across a wide range of voltage levels. This paper proposes a new inductor-based active balancing topology that achieves balancing by transferring energy from battery cells to the battery pack. One of its main advantages over existing designs is that it can operate over a wide battery cell voltage range. Moreover, multicell balancing with a balancing current independent of the imbalance level can be achieved by adjusting the width and interval of pulses. The proposed topology can be implemented using traditional low-side gate driving integrated circuits, avoiding the need for expensive isolated power modules and high-side gate drivers. Sample balancer designs for low-voltage battery cells as well as higher-voltage cells are provided. The presented experimental results verify the operation of the proposed balancer on a lithium-ion battery pack.

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Lin, Bor-Ren, and Yen-Chun Liu. "Implementation of a Wide Input Voltage Resonant Converter with Voltage Doubler Rectifier Topology." Electronics 9, no. 11 (2020): 1931. http://dx.doi.org/10.3390/electronics9111931.

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A new circuit structure of LLC converter is studied and implemented to achieve wide zero-voltage switching range and wide voltage operation such as consumer power units without power factor correction and long hold up time demand, battery chargers, photovoltaic converters and renewable power electronic converters. The dc converter with the different secondary winding turns is adopted and investigated to achieve the wide input voltage operation (50–400 V). To meet wide voltage operation, the full bridge and half bridge dc/dc converters with different secondary turns can be selected in the presented circuit to have three different voltage gains. According to input voltage range, the variable frequency scheme is employed to have the variable voltage gain to overcome the wide input voltage operation. Therefore, the wide soft switching load variation and wide voltage operation range are achieved in the presented resonant circuit. The prototype circuit is built and tested and the experiments are demonstrated to investigate the circuit performance.

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SHI, L. F., X. MA, G. H. QIN, L. Y. CHENG, and X. Q. LAI. "A WIDE SUPPLY RANGE BANDGAP VOLTAGE REFERENCE WITH CURVATURE COMPENSATION." Journal of Circuits, Systems and Computers 22, no. 01 (2013): 1250068. http://dx.doi.org/10.1142/s0218126612500685.

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For the requirement of power management controller chips, a wide supply range bandgap voltage reference circuit is presented. The preregulated circuit based on the regulation characteristic of zener diode extends the supply range and increases power supply rejection ratio (PSRR). Compensated by the base-emitter voltage (V BE ) linearization technique, the temperature stability of the bandgap circuit is improved further. The proposed circuit is implemented in a 0.4 μm bipolar CMOS DMOS (BCD) process and Spice simulation has been done for validation. The results of simulation and test show that the supply range of this circuit can reach 7.2 V to 40 V and 159 μV/V of supply voltage dependence; the temperature coefficient is just 3.5 ppm/°C over a wide temperature of -40°C to 125°C and PSRR is up to -94 dB at 1 kHz. For the perfective performance, this circuit can be used in wide temperature and wide supply range integrated circuit design.

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Zhou, Fanchao, Cheng Zhou, and Yanling Li. "A Design of high-low voltage compatible fully differential operational amplifier." Journal of Physics: Conference Series 2849, no. 1 (2024): 012027. http://dx.doi.org/10.1088/1742-6596/2849/1/012027.

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Abstract This paper presents a high-low voltage compatible wide-range fully differential operational amplifier designed using the DB HiTek 0.18 μm BCD process. The operational amplifier accurately tracks differential voltage changes within the input voltage range of 3~48 V. By employing common-mode voltage feedback, the amplifier achieves high-precision tracking of the differential voltage with a tracking voltage error accuracy of less than 1%. The designed fully differential operational amplifier finds applications in bidirectional Buck-boost converters, where it can be utilized for monitoring and controlling input/output current magnitude, preventing input power overload, and stabilizing dual-terminal voltages.

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Zawawi, Ruhaifi Bin Abdullah, Hojong Choi, and Jungsuk Kim. "High-PSRR Wide-Range Supply-Independent CMOS Voltage Reference for Retinal Prosthetic Systems." Electronics 9, no. 12 (2020): 2028. http://dx.doi.org/10.3390/electronics9122028.

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This paper presents a fully integrated voltage-reference circuit for implantable devices such as retinal implants. The recently developed retinal prostheses require a stable supply voltage to drive a high-density stimulator array. Accordingly, a voltage-reference circuit plays a critical role in generating a constant reference voltage, which is provided to a low-voltage-drop regulator (LDO), and filtering out the AC ripples in a power-supply rail after rectification. For this purpose, we use a beta-multiplier voltage-reference architecture to which a nonlinear current sink circuit is added, to improve the supply-independent performance drastically. The proposed reference circuit is fabricated using the standard 0.35 µm technology, along with an LDO that adopts an output ringing compensation circuit. The novel reference circuit generates a reference voltage of 1.37 V with a line regulation of 3.45 mV/V and maximum power-supply rejection ratio (PSRR) of −93 dB.

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Ren, Chunguang, Yapeng He, Yue Qin, et al. "A Novel Modular Sigma DC/DC Converter with a Wide Input Voltage Range." Electronics 13, no. 5 (2024): 995. http://dx.doi.org/10.3390/electronics13050995.

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A modular Sigma DC/DC converter with wide input voltage range is proposed in this paper. The proposed converter is combined with a traditional LLC converter and two multi-resonant converters via Sigma architecture. Among them, the traditional LLC converter operates as a DC transformer (DCX) at resonant frequency to achieve maximum efficiency. Meanwhile, one of the multi-resonant converters, the DC to DC (D2D) part of the Sigma structure, is responsible for voltage regulation over a wide input voltage range. In addition, the other multi-resonant converter has two operation modes, including DCX and D2D. When it operates in the DCX mode, the Sigma converter has better performance and higher efficiency. When it operates in the D2D mode, the Sigma converter can handle a wider input voltage range. For each submodule, the operation principle and characteristics of the proposed Sigma converter are analyzed in detail. In addition, some key points of the parameter design for each part are also demonstrated. Finally, an experimental prototype with an input voltage of 540~1100 V is built to verify the effectiveness of the proposed converter.

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Zhang, Shaoru, Huixian Li, Shuchun Duan, et al. "A High-Gain DC-DC Converter with a Wide Range of Output Voltage." Electronics 12, no. 16 (2023): 3498. http://dx.doi.org/10.3390/electronics12163498.

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In fuel-cell-powered electric vehicles, the output characteristics of the fuel cell are relatively soft, and the output voltage is unstable. Therefore, a DC-DC converter is required between the fuel cell and the inverter to transform the output voltage of the fuel cell into a suitable voltage for the motor drive. Existing non-isolated DC-DC converters cannot meet the requirements of high voltage gain, high efficiency and a wide range of output voltage simultaneously. To improve these performances, a high-gain DC-DC converter with a wide range of output voltage, based on a switched capacitor structure, is proposed in this paper. The converter supplies power to the load by connecting multiple capacitors with the input source in series in switch-on states, while the input source charges the capacitors through a series connection with an inductor in switch-off states. In comparison to existing converters, the proposed converter maintains high voltage gain at lower duty ratios and offers a wide range of output voltage. The operating principles, key waveforms and parameter design of the topology in Continuous Conduction Mode (CCM) are described and analyzed in detail, and the voltage gain of the proposed converter is compared with some other DC-DC converters. Finally, the results of simulations using Simulink and hardware experiments that were conducted to validate the theoretical analysis are described.

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Bakeer, Abualkasim, Andrii Chub, Dmitri Vinnikov, and Argo Rosin. "Wide Input Voltage Range Operation of the Series Resonant DC-DC Converter with Bridgeless Boost Rectifier." Energies 13, no. 16 (2020): 4220. http://dx.doi.org/10.3390/en13164220.

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The series resonant DC-DC converter (SRC) can regulate the input voltage in a wide range at a fixed switching frequency. In this work, the bridgeless rectifier, which is utilized intensively in the applications of the power factor correction, has been integrated into the SRC as a voltage step-up cell at the output-side of the SRC. It is shown that the conventional overlapping pulse-width modulation (PWM) of the two metal oxide semiconductor field-effect transistors MOSFETs in this rectification cell limits the input voltage regulation range of the converter due to excessive power losses in abnormal operating conditions. The abnormal operating conditions occur when the instantaneous voltage across the resonant capacitor is larger than the secondary voltage of the isolation transformer. This happens at high values of the DC voltage gain, i.e., low input voltages and high currents, which causes the resonant current to flow in the reverse direction in the same half-cycle through a parasitic path formed by overlapping PWM of the rectifier MOSFETs. The abnormal operation results in additional conduction loss in the converter as the MOSFETs of the bridgeless boost rectifier turn on at high current at the beginning of each half of the switching period. Accordingly, the overall efficiency of the converter significantly deteriorates. This paper proposes the hybrid PWM aiming to improve the efficiency of the SRC with a bridgeless boost rectifier in a wide input voltage regulation range. The converter swaps between the overlapping and the proposed short-pulse PWM schemes to drive the MOSFETs in the bridgeless boost rectifier. The transition between the two PWM schemes is defined according to the boundary condition that relies upon the operating point of the converter power and the input voltage. The proposed hybrid PWM scheme is analyzed and compared to the overlapping PWM at different levels of the input voltage and the load power. A 300 W prototype was studied in the laboratory to show the feasibility of the proposed hybrid PWM scheme with the closed-loop control system to switch between the two PWM schemes.

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Salih, Firas Abdul-hadi, and Turki Kahawish Hassan. "Capacitor voltages balancing method for buck modular DC/DC converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 4 (2022): 2277. http://dx.doi.org/10.11591/ijpeds.v13.i4.pp2277-2285.

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The most critical problem of the modular DC-DC converter (MDCC) is the voltage balancing of the submodule (SM) capacitors, the MDCC with stepped 2-level modulation has been developed and presents a good solution, however, this type of modulation has many restrictions when there is a wide range of capacitance tolerance of the SM capacitors that results inaccurate capacitor voltages balancing. To solve this problem, this paper discusses a proposed method of capacitor voltage balancing. Compared with stepped 2-level modulation, the voltage balancing method using modified duty cycle modulation offers the merits: i) reduction in output voltage and SM capacitor voltages overshoot during dynamic operation and improvement in the time response of the system and; ii) accurate voltage balancing over wide range of capacitance tolerance of each SM capacitor; and iii) the sorting algorithm replaced with modified duty cycle modulation method for the SM capacitor voltages balancing which reduces the computation burden. The proposed method ensures a stable voltage balancing, improves the time response of the system, and decreases the voltage and current overshoot during the dynamic response compared with prior art of MDCCs, where the stepped 2-level modulation is adopted. An analytical simulation of the MDCC is presented using MATLAB/Simulink to explain the operation.

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44

Firas, Abdul-Hadi Salih, and Kahawish Hassan Turki. "Capacitor voltages balancing method for buck modular DC/DC converter." International Journal of Power Electronics and Drive Systems 13, no. 4 (2022): 2277~2285. https://doi.org/10.11591/ijpeds.v13.i4.pp2277-2285.

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The most critical problem of the modular DC-DC converter (MDCC) is the voltage balancing of the submodule (SM) capacitors, the MDCC with stepped 2-level modulation has been developed and presents a good solution, however, this type of modulation has many restrictions when there is a wide range of capacitance tolerance of the SM capacitors that results inaccurate capacitor voltages balancing. To solve this problem, this paper discusses a proposed method of capacitor voltage balancing. Compared with stepped 2-level modulation, the voltage balancing method using modified duty cycle modulation offers the merits: i) reduction in output voltage and SM capacitor voltages overshoot during dynamic operation and improvement in the time response of the system and; ii) accurate voltage balancing over wide range of capacitance tolerance of each SM capacitor; and iii) the sorting algorithm replaced with modified duty cycle modulation method for the SM capacitor voltages balancing which reduces the computation burden. The proposed method ensures a stable voltage balancing, improves the time response of the system, and decreases the voltage and current overshoot during the dynamic response compared with prior art of MDCCs, where the stepped 2-level modulation is adopted. An analytical simulation of the MDCC is presented using MATLAB/Simulink to explain the operation.

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Spiazzi, Giorgio, Leopoldo Rossetto, Paolo Mattavelli, Ezio Gallo, and Filip Cvejic. "An Isolated Bidirectional Soft-Switching DC-DC Converter for Wide Input/Output Voltage Range." Energies 17, no. 23 (2024): 6121. https://doi.org/10.3390/en17236121.

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This paper presents the analysis and design of an isolated bidirectional DC-DC converter for applications where both input and output voltages may vary in a wide range. The proposed topology is derived from the integration of an isolated Current-Fed Dual-Active-Bridge (CF-DAB) stage with a Four-Switch Buck-Boost cell (4SBB), sharing one switching leg. Detailed design procedures are outlined for both CF-DAB and 4SBB stages, allowing to achieve Zero-Voltage turn-on of all devices while minimizing the inductor current RMS values. An optimized design of the CF-DAB coupled inductors allowed to achieve the desired leakage inductance value without the need for an additional magnetic component. Experimental results taken on a 5 kW prototype interfacing two voltage ports with VL ∈ [42 V, 72 V], VH ∈ [225 V, 435 V] validate the proposed design procedure.

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Xiao, Yuchi, Chunlai Wang, Hongyang Hou, and Weihua Han. "A Sub-1 ppm/°C Reference Voltage Source with a Wide Input Range." Micromachines 15, no. 10 (2024): 1273. http://dx.doi.org/10.3390/mi15101273.

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With the continuous advancement of electronic technology, the application of high-voltage integrated circuits is becoming increasingly prevalent in fields such as power systems, medical devices, and industrial automation. The reference circuit within high-voltage integrated circuits must not only exhibit insensitivity to temperature variations but also maintain stability across a broad voltage supply. This paper presents a bandgap reference (BGR) source capable of operating over a wide input range. This BGR employs a high-order curvature compensation method to eliminate nonlinear voltage terms, resulting in minimal temperature drift. The circuit achieves an impressive temperature coefficient (TC) of 0.88 ppm/°C over a temperature range from −40 °C to 130 °C. To ensure stable operation within a 4–40 V range, the design incorporates a pre-regulation circuit that stabilizes the supply voltage of the BGR core at a fixed value, thereby enhancing the ability to withstand variations in power supply voltage.

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Saif, Hassan, Yongmin Lee, Hyeonji Lee, et al. "A Wide Load Current and Voltage Range Switched Capacitor DC–DC Converter with Load Dependent Configurability for Dynamic Voltage Implementation in Miniature Sensors." Energies 11, no. 11 (2018): 3092. http://dx.doi.org/10.3390/en11113092.

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Advancements in low power circuits and batteries have enabled the design of miniature sensors with tiny batteries. In such systems, implementing dynamic voltage scaling (DVS) is crucial for maximizing system lifetime. In this paper, a new switched capacitor (SC) converter that is capable of handling a wide range of load currents and output voltages is presented for on-chip DVS implementation. The proposed converter consists of multi-ratio multi-leaf SC stages and reconfigurable interconnect, enabling fine voltage resolution. The stage interconnect scheme enables cascaded or parallel connection of stages. The multi-leaf structure allows load-dependent switch size selection, offering a better trade-off between losses over a wide load range. A limited-voltage-swing switch-driving scheme allows efficient down-conversion from high battery voltage input. A prototype was fabricated in a 180 nm process, providing an output voltage with effective resolution of 16 mV over a load current range of 300 nA to 300 μA (1000×) from a 4 V battery. Efficiency greater than 62% and a peak efficiency of 77% are achieved under a light load (500 nA) over a voltage range of 400 mV to 1.6 V. Efficiency greater than 64% and a peak efficiency of 72% are achieved under a heavy load (200 μA) over a voltage range of 700 mV to 1.6 V.

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Ghanavati, B., S. Mohammadzadeh, B. Noshad, M. Ahmadzadeh, and A. Falahat. "Low-Voltage Wide Tuning Range Membership Function Generator and Its Application." Journal of Circuits, Systems and Computers 25, no. 02 (2015): 1650010. http://dx.doi.org/10.1142/s0218126616500109.

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A versatile low-voltage CMOS circuit with a trapezoidal transconductance characteristic and independently programmable slope, height and horizontal position is designed in 0.18[Formula: see text][Formula: see text]m standard CMOS technology. The proposed circuit is constructed from combination of two linearization methods to enhance the linearity in low voltage applications. A [Formula: see text]118[Formula: see text]dB THD was obtained for a 400[Formula: see text]mV peak to peak differential input voltage at 125[Formula: see text]KHz. Simulation results using HSPICE that verify the functionality of circuit with 1.5[Formula: see text]V supply are presented. The total power consumption is only 120[Formula: see text][Formula: see text]W. The circuit can find application in the implementation of membership functions in analogue and mixed-signal neuro-fuzzy systems.

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Osaki, Yuji, Tetsuya Hirose, Nobutaka Kuroki, and Masahiro Numa. "A wide input voltage range level shifter circuit for extremely low-voltage digital LSIs." IEICE Electronics Express 8, no. 12 (2011): 890–96. http://dx.doi.org/10.1587/elex.8.890.

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Shan, Weiwei, Longxing Shi, and Jun Yang. "In-Situ Timing Monitor-Based Adaptive Voltage Scaling System for Wide-Voltage-Range Applications." IEEE Access 5 (2017): 15831–38. http://dx.doi.org/10.1109/access.2017.2670644.

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Journal articles on the topic 'Wide range voltage'

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