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Floating-gate transistors have been used in many systems to add non-volatile memory. By storing a precise amount of charge on the electrically isolated floating gate, these devices can be used in analog applications as programmable current sources. However, manipulating the stored charge must be done with voltage drops that exceed the supply voltage. In this paper, we present a method to program floating-gate...
Flash memory is an important component in many embedded system-on-a-chip applications, which drives the need to generate high write/erase voltages in generic CMOS processes. In this paper, we present a regulated, high-voltage charge pump for erasing Flash memory and floating-gate transistors. This 0.069-mm2 charge pump was fabricated in a 0.35 $\mu \text {m}$ standard CMOS process. While operating...
Use of power gates for leakage power reduction comes at the expense of higher DC and AC load lines due to location of voltage regulator sense point before the power gate and choice reference voltage to guarantee minimum voltage across all power gate and load conditions. This paper proposes schemes to dynamically change both the sense voltage and the reference voltage to reduce AC & DC load lines...
This paper presents the design of a high-voltage (HV) rail-to-rail error amplifier. This circuit controls the output signal of a low drop-out voltage regulator (LDO) according to the reference voltages and based on stacked standard transistors. The circuit is designed using 65 nm CMOS process technology with a nominal voltage of 2.5 V and is optimized for arbitrary values of supply voltage up to 5...
This paper presents a high-voltage (HV) driver for switching a buck converter. The circuit is based on 3-stacked CMOS using gate control circuits to drive maximum current which indicates minimized on-resistance of the HV-driver thus achieving faster switching. The circuit is designed and fabricated using 65 nm CMOS TSMC process technology with a nominal voltage of 2.5 V and with a supply voltage of...
This paper presents the design of two high-voltage level shifters suitable for a wide range of supply voltages. In view of certain drawbacks identified during the design, implementation, simulation and measurement of a 3-stacked CMOS driver using capacitive feedback level shifters, improved high-voltage level shifters are designed. These circuits are compared with each other in terms of their circuit...
Synthesizable all-digital ADCs lead to reduced design cost and design time as well as to low cross-technology porting costs. VCO-based ADC is an attractive candidate for the synthesis of ADCs using standard cells. However, a VCO, which is controlled by an analog input signal, is difficult to implement using standard digital circuits. Supply controlled ring oscillators using static CMOS inverters are...
This paper presents the design of a high-voltage driver based on stacked standard low-voltage CMOS with an adapted level shifter. Both circuits are designed in 65-nm TSMC technology with a nominal voltage of 2.5 V without any passive elements. The control voltages to regulate the stacked transistors of the HV-driver are achieved by proposing cascode self-biasing method, therefore no reference voltages...
PWM-controlled power converters are increasingly used in the More Electric Aircraft (MEA). However, Electromagnetic Interference (EMI) is introduced due to the high dv/dt and di/dt slew rates of their fast-switching power devices. Though EMI is conventionally mitigated by adding filters that can be often heavy and bulky, a better solution would be to address it at source, in order to achieve higher...
This paper presents a simple but effective improvement for source coupled logic (SCL) circuits and its application to dual modulus frequency prescaler design. By biasing the standard resistor-load SCL structure with a bias current inversely proportional to the resistor, logic levels are kept over process and temperature variations and, as a result, reliable operation is preserved over a wider range...
TonyChopper is an integrated set of tools for digital circuit desynchronization. The core portion of TonyChopper is a tool that reads a gate-level synthesized synchronous digital circuit and transforms it to an asynchronous circuit by implementing a novel desynchronization approach. Pre-layout and post-layout verification tools are also provided in this package. The proposed new asynchronous design...
This paper presents a new, simple and low cost method for fast short circuit protection of IGBT modules. The principle of the method is to measure the voltage across the inductance between the power-emitter and the auxiliary-emitter. Moreover, by modulating the gate-signal, the new method reduces the gate emitter voltage Vge in order to limit the short circuit current and allows the semiconductor...
The authors have proposed a reactive power control method by use of boost critical conduction mode (CRM) power factor correction (PFC) converters to suppress voltage rise in distribution networks. Using this method, PFC converters can control not only inductive reactive power but also capacitive reactive power. Therefore, this method is useful to control voltage. In this paper, a PFC converter and...
The idea of this paper is related to possible conversions of min, max and mid fuzzy gates functions. If we want to convert basic min and max gate function to another logical function, for some reason, that can be done on several ways. For the beginning one can convert only gate inputs. In the second case only gate outputs can be inverted. The third kind of the gate interchangeability is done by the...
This paper presents a new technique for reducing on-resistance of high-voltage drivers, which are based on N-stacked standard CMOS. A theory to calculate gate voltages of HV-driver transistors to drive the maximum drain current for minimum on-resistance is introduced. According to the calculated gate voltages, a circuit design methodology for generating them is described. This concept is technology...
We report single electron pumping through a metal gate defined quantum dot (QD) fabricated on a GaAs/AlGaAs 2-dimensional electron gas (2DEG) system. The quantum dot used for pumping is uniquely designed to have larger subband energy spacings than those of a conventional quantum dot. Several quantized current steps were observed at liquid helium temperature when the pump was operated at 100 MHz of...
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