Analysis of Abnormal Upturns in Capacitance–Voltage …
Abstract: In this letter, we analyze the nonsaturating upturns of capacitance under strong accumulation bias in MOS capacitors with high-k dielectrics. By comparing the electrical properties of dielectric samples with and without HfO 2 and by varying the ambient temperature, it is found that the conduction through the shallow trap levels in the HfO 2 …
Sustainability | Free Full-Text | Design and Analysis of Input Capacitor …
Photovoltaic (P.V.) systems have become an emerging field for power generation by using renewable energy (RE) sources to overcome the usage of conventional combustible fuels and the massive release of dangerous gases. The efficient operation of the PV system is vital to extracting the maximum power from the PV source. For this, a …
Modeling of Input Capacitance of IGBTs under Dynamic Conditions
2 si si 0 A C W =εε (3) where C ox is the oxide layer capacitance,C si is the semiconductor layer capacitance,A 2 is the overlapped areas between gate and drift region, and W is the depletion width. It should be noticed that the drift region (N substrate) under the
Gold, as the noblest metal, is an appropriate model electrode to study electrochemical double layers. This study examines the frequency dispersion of the double layer of polished gold electrodes in …
The dynamic perturbation of the double layer equilibrium by impedance measurements shows a constant phase (CP) response (phase angle of approximately −75°), which is responsible for a frequency …
MEMS capacitive accelerometer: dynamic sensitivity analysis based on analytical squeeze film damping and mechanical thermoelasticity approaches. Research …
The initial analysis will consider circuits made up of ideal devices: switches, each with a finite on-state resistance and ideal capacitors. For the basic analysis, the switches …
Dynamic Power Factor Correction in Industrial Systems: An Automated Capacitor …
The quality of electrical power in a network is a major concern which has to be examined with caution in order to achieve a reliable electrical power system network. Reactive power ...
Simulation of MOS Capacitor for C/V Characterization
Simulation of MOS Capacitor for C/V g Characterization Ajay K. Srivastava a,1 E. Fretwurst a, R.Klanner a ... are used for surface damage analysis and the current-voltage (I/V g) and capacitance ...
On-die Decoupling Capacitance: Frequency Domain Analysis of …
capacitance is provided by specially designed circuits whose primary role is decoupling. The sum of both types is the on-die decoupling capacitance. Unlike board and package level decoupling capacitors, on-die capacitance is distributed all over the circuit. In
Small-Signal Modeling and Loss Analysis of Capacitor-Current …
In this article, a capacitor-current dynamic-freewheeling control scheme for PCCM SIMO dc-dc converter is proposed to overcome these restrictions. Taking PCCM single-inductor …
Characterizing the dynamic output capacitance of a MOSFET
Effective capacitance values represent the capacitance that results in the same charge time or charge energy up to a given voltage. These values take the change of capacitance into account without the need for complex formulas or integration like would be required when using equation 1.
The Effects of Comparator Dynamic Capacitor Mismatch in SAR ADC and Correction.pdf Available via ... analysis and its application in SAR ADCs," IEEE International Symposium on Circuits and Systems ...
Performance analysis of a digital capacitance measuring circuit
This paper presents the design and study of a digital capacitance measuring circuit with theoretical analysis, numerical simulation, and experimental evaluation You could not be signed in. Please check your credentials and make sure you have an active account ...
Fabrication and dynamic analysis of the electrostatically actuated MEMS variable capacitor …
A number of MEMS tunable capacitors have been designed, fabricated and widely studied [7, 8].Generally, there are three methods to change the capacitance of the parallel plate ...
The capacitance modulation can be attributed to the inflow and outflow of particles (for e.g. cells in biological suspensions) on top of the sensor as shown in Fig. 2, top. (The section "fabrication of sensor …
Noise analysis of a capacitor-to-voltage converter with a zoom-in …
We report the noise analysis of a capacitor to voltage converter (CVC) with a zoom-in concept, used as a first stage in capacitive sensor interfaces for measuring very small capacitance variations.
Characterization of MEMS comb capacitor | Microsystem …
With the advancement of micro-electro-mechanical systems (MEMS) technologies, it is compulsory to have the sources which power the micro devices at micron scale. Due to the miniaturization, compactness, inexpensive and ease of integration with the standard process compatibility, CMOS-MEMS capacitor is characterized. There are two …
Parasitic capacitance effect on the performance of two-phase …
The study was conducted by describing the top- and bottom-plate parasitic capacitances of a capacitor network in matrix form; these resulted matrices were then …
Fig. 3: A dynamic model of multilayer ceramic capacitors (example) Table 1: Availability of Murata''s dynamic model for each circuit simulator Sample Application This section gives an example of application of the dynamic model to characteristic analysis of a DC/DC converter.
Lifetime prediction models of pulsed capacitor based on capacitance …
Metallized film capacitor possesses characteristics of self-healing, high reliability, long lifetime and high energy density, which make it widely used in electromagnetic launch (EML) system. Lifetime and reliability of capacitor are the key factors that ensure the stability of the EML. In the capacitor lifetime test, it is a time-consuming work to get enough lifetime …
A dynamic analysis of the Dickson charge pump circuit
in this paper, but a similar analysis in the case of an odd-number-stage charge pump can be carried out. The following assumptions are made. 1) Each diode and charge pump capacitor have constant values of and, respectively. 2) The parasitic capacitance is
Measurement Methods for Capacitances in the Range of 1 pF–1 …
In this paper, we provide an actual overview of capacitance measurement circuits considering well-known and modern measurement methods, such as lock-in …
Switched capacitors doubler and triplers are used to step-up dc voltage. They are readily integrable which makes them a good choice for numerous applications. Their power conversion efficiency is limited due to switch drops, parasitic capacitances and resistances. However their efficiency is also inherently limited by the circuit topology. This …
The architecture has a large multiplication factor of up to 10 000 or larger compared with current-mode multipliers, and a wide dynamic range compared with voltage-mode capacitor multipliers.
Dynamic Capacitance Model of a Pinned Photodiode in CMOS …
The charge holding capacity of a pinned photodiode (PPD) in CMOS image sensors (CISs) is determined by the capacitance of the photodiode. A PPD with a higher full-well capacity (FWC) is desirable for a higher dynamic range and image contrast thereby improving the image quality. The dependence of FWC of a PPD on light intensity and …
Dynamic Analysis of Two-Phase Switched-Capacitor DC–DC …
Request PDF | Dynamic Analysis of Two-Phase Switched-Capacitor DC–DC Converters | A method that aims at analyzing the dynamic behavior of some two-phase switched ...
Dynamic Capacitance Measurement of SF6 Circuit Breaker …
Large-capacity capacitor banks have been used to control the reactive power of ultra high voltage ac grid in China. The high switching inrush current of SF <sub xmlns:mml="http ...
Dynamic analysis of multilayer ceramic capacitor for vibration reduction …
Owing to their high permittivity and volumetric efficiency, the demand for multilayer ceramic capacitors (MLCCs) has increased rapidly in recent times. Because of the electromechanical characteristics of BaTiO3, MLCC vibrates, resulting in printed circuit boards (PCBs) generating acoustic noise. To construct an accurate finite element model …
Dynamic analysis of multilayer ceramic capacitor for vibration …
Owing to their high permittivity and volumetric efficiency, the demand for multilayer ceramic capacitors (MLCCs) has increased rapidly in recent times. Because of the electromechanical characteristics of BaTiO3, MLCC vibrates, resulting in printed circuit boards (PCBs) generating acoustic noise. To construct an accurate finite element model …
An optimization method of planar array capacitance imaging
The sensitive field is the change rate of capacitance value caused by the change of dielectric constant on the unit area of the measurement area. In order to describe the measurement area more clearly, as shown in Fig. 2, the measurement area of 150 mm × 150 mm × 50 mm is divided in the way of 60 × 60 × 20, and the size of each unit is 2.5 …
Noise analysis of a capacitor-to-voltage converter with a zoom-in …
It is proven that, for a given measurement time, the resolution of the input stage of the CVC is independent of the load capacitor, and such a system is very efficient for high resolution displacement measurement, based on a capacitive sensor system. We report the noise analysis of a capacitor to voltage converter (CVC) with a zoom-in …
