This paper presents the design of a Current-toVoltage (I−V) and Voltage-to-Current (V−I) converters for use in current-mode analog integrated circuits are described. The proposed I−V converter and V-I Converter has high linear range. The circuit uses MOS transistors in linear and saturation regions to produce an output current linearly related to the input voltage. Both circuits have been imple...

A DC-DC converter is designed according to the request of the electric propulsion system for a fuel cell sightseeing car. The converter adopts a simple topography full bridge circuit. The main switch transistors are driven by the module TL494, based on pulse-width modulation method. A high accuracy linear optical coupler is used to isolate analogy signal in order to guarantee the stabilization ...

In this paper a new 8-bit 50-Msample/s CMOS digital-to-analog converter (DAC) is presented. The circuit employs 9 operational transconductance amplifiers (OTAs) and CMOS transistors as switching circuit. The proposed DAC is simulated using SPICE simulation program with 3μm CMOS technology. Simulation results shows verify good performance of the circuit.

A novel zero-voltage and zero-current-switching (ZVZCS) full-bridge pulsewidth modulation converter is presented to simplify the circuits of the previously presented ZVSCS converters. A simple auxiliary circuit, which consists of one small capacitor and two small diodes, is added in the secondary to provides ZVZCS conditions to primary switches, as well as to clamp secondary rectifier voltage. ...

This paper demonstrates the ability of genetic programming to evolve analog circuits that perform digital functions and mixed analog-digital circuits. The evolved circuits include two purely digital circuits (a 100 nano-second NAND circuit and a two-instruction arithmetic logic unit circuit) and one mixed-signal circuit, namely a three-input digital-to-analog converter.

Design and characterization of a 13 bit serial-to-parallel converter in GaAs technology for smart antennas are presented. The circuit has been realized with NOR-based super-buffered enhancement/depletion logic, and optimized for a compact layout. The serial-to-parallel converter operates properly well above the 20 kHz design clock frequency.

This paper presents a forward converter topology that employs a small resonant auxiliary circuit. The advantages of the proposed topology include soft switching in both the main and auxiliary switches, recovery of the leakage inductance energy, simplified power transformer achieving self-reset without using the conventional reset winding, simple gate drive and control circuit, etc. Steady-state...

In this work a new embedded negative voltage level converter is presented. The proposed circuit converts a positive input signal to a negative output signal obtaining an increased protection by the high voltage stress on the used MOS devices. This results in higher system reliability in applications where negative pulses are required. The circuit has been designed in a 0.18μm triple-well standa...

In this paper, a synchronous cuk converter proposed for analyzing the performance of photovoltaic system is presented. In the proposed cuk converter, the conduction losses and switching losses are reduced. The conduction losses are reduced by replacing the diode with MOSFET and the switching losses are reduced by providing an auxiliary circuit. The proposed converter system is operated based on...

–Harmonic pollution and low power factor in power systems caused by power converters have been of great concern. To overcome these problems several converter topologies using advanced semiconductor devices and control schemes have been proposed. This investigation is to identify a low cost, small size, efficient and reliable ac to dc converter to meet the input performance index of UPS. The per...