Novel CMOS Bulk-driven Charge Pump for Ultra Low Input Voltage

Nagy, Gabriel; Arbet, Daniel; Stopjaková, Viera; Kovac, Martin

doi:10.13164/re.2016.0321

Cited by 8 publications

(5 citation statements)

References 30 publications

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“…The charge pump employing dynamic threshold CMOS inverter is able to process very low levels of input voltages. This also represents the main advantage of the proposed topology [10]. However, the drawback lies in the limited voltage range the charge pump can work with, because of the increased risk of latch-up triggering.…”

Section: Description Of the Bd Charge Pumpmentioning

confidence: 98%

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Ultra-Low-Voltage IC Design Methods

Arbet¹,

Nagy²,

Stopjaková³

2020

Integrated Circuits/Microchips

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The emerging nanoscale technologies inherently offer transistors working with low voltage levels and are optimized for low-power operation. However, these technologies lack quality electronic components vital for reliable analog and/or mixed-signal design (e.g., resistor, capacitor, etc.) as they are predominantly used in high-performance digital designs. Moreover, the voltage headroom, ESD properties, the maximum current densities, parasitic effects, process fluctuations, aging effects, and many other parameters are superior in verified-by-time CMOS processes using planar transistors. This is the main reason, why low-voltage, low-power high-performance analog and mixed-signal circuits are still being designed in mature process nodes. In the proposed chapter, we bring an overview of main challenges and design techniques effectively applicable for ultra-low-voltage and low-power analog integrated circuits in nanoscale technologies. New design challenges and limitations linked with a low value of the supply voltage, the process fluctuation, device mismatch, and other effects are discussed. In the later part of the chapter, conventional and unconventional design techniques (bulk-driven approach, floating-gate, dynamic threshold, etc.) to design analog integrated circuits towards ultra-low-voltage systems and applications are described. Examples of ultra-low-voltage analog ICs blocks (an operational amplifier, a voltage comparator, a charge pump, etc.) designed in a standard CMOS technology using the unconventional design approach are presented.

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Section: Description Of the Bd Charge Pumpmentioning

confidence: 98%

“…The proposed control approach mitigates the excessive voltage stress, which the thin gate oxide of the MOS transistor is exposed to. The voltage drop is comprised of the equivalent resistance of the switched capacitors and the voltage drop across the turned-on transistor [10].…”

Section: Description Of the Bd Charge Pumpmentioning

confidence: 99%

Ultra-Low-Voltage IC Design Methods

Arbet¹,

Nagy²,

Stopjaková³

2020

Integrated Circuits/Microchips

View full text Add to dashboard Cite

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“…The charge pump system has accommodated the voltage according to the threshold, then the voltage will be supplied to the smartphone battery. If the charge pump system voltage has not reached the threshold, Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control then the voltage will not be supplied to the smartphone battery [23]. The battery charging process will continue as long as there is sunlight.…”

Section: Design Conceptmentioning

confidence: 99%

Design and Simulation of Low Power and Voltage Micro Photovoltaic Cell for Mobile Devices

Rullah

Harahap

Wibowo

et al. 2022

KINETIK

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In this study, designed and simulated a micro photovoltaic cell circuit which is part of smartphone battery charging system sensor. Problem discussed in this paper was that smartphone are still charging battery from PLN through a wall outlet, but smartphone would be better off if it had other charging alternatives, such as being able to charge anywhere or mobile. This paper proposed used photovoltaic cell that can convert sunlight into electricity and it can charge the battery on a smartphone. Photovoltaic cell were integrated with smartphone batteries in photovoltaic IC to form a battery charging system that can charge smartphone. The design of the micro photovoltaic cell sensor section is based on from the references paper. Micro photovoltaic cell was design by modifying the resistor value in the micro photovoltaic cell circuit, so the output low voltage and power be able to charge the smartphone battery. Designed and simulated micro photovoltaic cell circuits will be carried out using LTSpice. The results that achived in this research, when shunt resistance value was configure negative, the voltage value around 200mV, the power value around 1,48µW. When the shunt resistance value was configure positive the voltage value around 199mV, the power value around 1,44µW. Analysis was carried out by comparing voltage values obtained in this study with previous studies. In this study, a smaller voltage value was obtained by modifying the resistor value in the micro photovoltaic cell circuit. The circuit design will later be implemented in 0.35µm CMOS technology.

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“…The battery management is one of issues to be investigated further. Here, energy harvesting systems generating electrical energy from ambient environment represent a promising solution towards enhancing the battery lifetime or avoiding the necessity of battery change that might be very impractical and inconvenient in some applications [ 230 , 231 ] could be effectively employed to provide a self-powered (at least partially) electronic system. Detailed parameters of proposed multi-sensor concept are summarized at the end of Table 1 .…”

Section: Advanced Wearable Stress-metersmentioning

confidence: 99%

The Concept of Advanced Multi-Sensor Monitoring of Human Stress

Vavrinský

Stopjaková

Kopáni

et al. 2021

Sensors

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Many people live under stressful conditions which has an adverse effect on their health. Human stress, especially long-term one, can lead to a serious illness. Therefore, monitoring of human stress influence can be very useful. We can monitor stress in strictly controlled laboratory conditions, but it is time-consuming and does not capture reactions, on everyday stressors or in natural environment using wearable sensors, but with limited accuracy. Therefore, we began to analyze the current state of promising wearable stress-meters and the latest advances in the record of related physiological variables. Based on these results, we present the concept of an accurate, reliable and easier to use telemedicine device for long-term monitoring of people in a real life. In our concept, we ratify with two synchronized devices, one on the finger and the second on the chest. The results will be obtained from several physiological variables including electrodermal activity, heart rate and respiration, body temperature, blood pressure and others. All these variables will be measured using a coherent multi-sensors device. Our goal is to show possibilities and trends towards the production of new telemedicine equipment and thus, opening the door to a widespread application of human stress-meters.

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Novel CMOS Bulk-driven Charge Pump for Ultra Low Input Voltage

Abstract: Abstract. In this paper, a novel bulk-driven cross-coupled

Cited by 8 publications

References 30 publications

Ultra-Low-Voltage IC Design Methods

Ultra-Low-Voltage IC Design Methods

Design and Simulation of Low Power and Voltage Micro Photovoltaic Cell for Mobile Devices

The Concept of Advanced Multi-Sensor Monitoring of Human Stress

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