Voltage clamps for protecting low-voltage DC circuits require a new approach to circuit design. Many clamps commonly used were built for systems of 5-Volts or higher but lower voltage systems require distinctive clamping abilities. The use very low-voltage precision enhancement-mode MOSFETs play a pivotal role in designing voltage clamps in low-voltage

The effect of line impedance compensation mode of series inverter along with the voltage regulation mode of shunt inverter of UPFC is investigated for transient stability improvement of Single Machine Infinite Bus System. Four control modes like perpendicular voltage or phase angle control etc have also been discussed. The effect of line impedance mode on critical clearing time with a three pha...

The second order Sallen-Key low-pass filter structures have one disadvantage in the voltage and current mode, it is a decreasing of the attenuation in the stopband. This fact is caused by losses of the amplification factor of active elements at high frequencies. Some solutions of this problem had been already published for circuits working in the voltage mode. This article presents one of the p...

To efficiently supply wide-range DC voltage from a pulse-width modulation (PWM) rectifier, this paper presents a single-phase, full-wave, diode-bridge, single-ended primary-inductor converter-type (SEPIC-type) power-factor-correction (PFC) rectifier in continuous conduction mode with a sliding surface-regulated current-mode PWM controller. According to the switched-mode operation of the rectifi...

A 1.2V 5GHz low-cost voltage-controlled oscillator (VCO) with active common mode feedback has been implemented in a CMOS/RF 90nm technology for a robust I/Q generation using a frequency divider-by-2 (DIV2). As the input common mode of the DIV2 affects critically its performance, a calibration method to correct the output common mode of the VCO has been proposed and validated through post-layout...

This paper presents a optimal bidirectional battery charger. The proposed charger acts as a current source, i.e., acts in constant current (CC ) mode with a controlled output current in case of deep discharge of a battery, and as a voltage source, i.e., acts in constant-voltage (CV) mode with a controlled output voltage for near-100% battery state of charge. The proposed circuit is universal fr...

Abstract—This paper proposed a new modulation strategy to eliminate common mode voltages in multilevel inverters. In this scheme which is explained for a 5-level modular inverter, all voltage vectors with zero common mode voltages can be classified into four categories and each two adjacent categories composed a segment. Synthesized voltage vectors that are an approximation to the reference vec...

The paper presents a new voltage-mode universal filter using a differential voltage current conveyor transconductance amplifier (DVCCTA). It has three inputs and single output. The proposed circuit can simultaneously realize low-pass, band-pass, and high pass, band reject and all pass filter functions without changing the circuit topology and passive elements. The circuit exhibits a good freque...

In this paper a Near State Pulse Width Modulation (NSPWM) algorithm with reduced switching frequency is presented for vector controlled induction motor drives for reduced common mode voltage/currents. The proposed algorithm utilizes a group of three neighbor voltage vectors to construct the reference voltage space vector. In the proposed algorithm in each sector any one of the phases is clamped...

Switch-mode voltage regulators are considered as the dominant choice for low-power integrated power supplies. Employing the advantages of a switch-mode voltage regulator in 0. 18μm CMOS technology, a power supply has been designed for a complete System-on-Chip (SoC). While offering enough drive capability for the entire system, the supply provides an extra highly-regulated output for noise-sens...