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In this paper, a new LDMOS on silicon-on-insulator (SOI) with homo-type fixed interface charges in the bottom of field oxide layer is proposed. The surface electric field can be improved by adding the fixed interface charges and optimizing the doping profile, which can effectively modulate electric field to obtain the optimization trade-off between the breakdown voltage and on-resistance. The numerical...
This paper proposes a novel method to derive the junction temperature of a Silicon Carbide Schottky Barrier Diode (SiC SBD) when it is in operation. There is a correlation between the switching waveforms and the temperature, due to the material parameters and the carrier vary with the temperature. Estimating the Turn-on-delay time as a temperature sensitive electrical parameter (TSEP), the chip temperature...
In order to solve the problems of power transformer such as the fault can be reflected by different characteristic signal from different side and complexity of fault reason and phenomenon, a synthetic diagnosis method using multi-neural network and evidence theory for transformer fault diagnosis is presented. Various kinds of data are dealt by using neural network's excellent abilities of learning,...
A simulation method of non-uniform interface charges in pMOSFETs was presented in this paper. By using the 2D device simulation software, it increases the non-uniform interface charges array and calculation module. Bonded with the device negative bias temperature instability NBTI (Negative Bias Temperature Instability) degeneration model, the pure bias NBTI (Pure Drain Bias NBTI) degradation impact...
An incremental delta-sigma modulator with a self-making capacitor having a high voltage operating ability for a 12-cell battery pack is proposed in this paper. The measured voltage range for each battery is from 0 to 5 V, and the maximum input voltage reaches to 60 V. The self-making capacitor adopting a metal over poly silicon with a relatively thin layer of oxide between the two plates is generated...
In order to solve the safety problem about person and equipment caused by the dispersed current during the transmission tower being lightning struck, it is necessary to study the characteristics of the dispersed current. In this paper, the dispersed current model of the tower grounding device is established in COMSOL. The distribution of the dispersed current around the tower is discussed, and the...
This paper presents a low-power all-digital first-order single-bit delta-sigma time-to-digital converter (TDC) with a differential bi-directional gated delay line time integrator. The differential time integrator features low power consumption accredited to the use of only one bi-directional gated delay line in performing time integration, full compatibility with technology scaling, rapid time integration,...
In whole system, the user usually only offers a voltage with noise as input logic voltage to digital receiver, to guarantee the right logic control, it requires that the IC chip must have a stable inversion level with logic high and logic low input voltage. For COMS process, in traditional design scheme, it usually uses a normal digital inverter as input-unit schematic, and changes the width or length...
Presents a low offset current sensing circuit based on switched-capacitor, in which resistance sensing technique is used. Under the control of clock switch, the switched-capacitor integrator could feed the operational amplifier offset voltage back to major circuit as a negative feedback regulator periodically to reduce the influence from the offset to the output. It is shown in the HSPICE simulation...
Lightning is an important factor in the biosafety of the surrounding area of the tower, and its core lies in the dispersed current damage. Lightning current flows into the earth, resulting in the imbalance of current, the unbalance of current leads to the unbalance of the voltage around the tower. Aiming at the problem of lack of soil dispersed current test and safety assessment, the experiment of...
In this paper, an ultra-wideband stripline 3dB orthogonal directional coupler based on LTCC is studied. The operating frequency is 0.5–3.5GHz and the relative bandwidth is 150%. The difficulty lies in the requirements of ultra-wideband, high performance and miniaturization. In this paper, we started from the design and manufacture of the product, combined with the theoretical basis, through the HFSS...
This paper presents a low-power adaptive edge decision feedback equalizer (DFE) for 10 giga-bits-per-second (Gbps) serial links with 4 PAM (pulse-amplitude-modulation) signaling. Optimal tap coefficients are obtained adaptively using a sign-sign least-mean-square (SS-LMS) algorithm that minimizes the jitter of equalized data. Low-voltage-differential-signaling (LVDS) tap generators that double DFE...
Synthesis and implementation are two fundamental steps of the hardware design. Mountains of work in this area synthesize and implement your design from Hardware Description Language (HDL) description to the target FPGA device. We present ISE plus Customized P&R, a tool-chain converting Verilog designs into XDL that contains Xilinx FPGA implement modules. A key aspect of this tool-chain is that...
This letter presents a lower power and wide locking range divide-by-2 with capacitive cross-coupled injection-locked frequency divider (ILFD) implemented in the TSMC standard 0.18 μm CMOS process. The ILFD is based on a capacitive cross-coupled VCO with one injection MOSFET for coupling the external signal to the resonator. The ILFD uses one 3-dimensional inductors to reduce the die area. At the supply...
This paper presents an effective design solution for a high-sensitivity current-shunt monitor which operates with an independent supply voltage from 5 to 16 V and achieves a wide input common-mode voltage range from −16 to 60 V. The proposed current-shunt monitor adopts two amplifiers, a current source and several resistors to constitute a feedback circuit and successfully sense drops across shunt...
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