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A high voltage charge pump design is being presented in this paper. The design is based on Dickson charge pump, constructed with diodes by using AMS 0.35μm technology. The innovation is made in Dickson charge pump i.e. charge control PMOS transistor is used in each stage of charge pump. PMOS transistor is used in series with charging capacitor which reduces the power consumption during the clock transition...
An ultra low-power CMOS low-dropout regulator (LDO), consuming only 680-nA quiescent current with fast transient response and 10-mA load capability, is proposed in this paper. It is designed in a 0.35-μm CMOS technology and verified by HSPICE simulations. With the proposed internal frequency compensation method, the LDO can be stabilized without minimal requirement of equivalent-series-resistance...
A new electronically tunable current-mode high-Q bandpass filter employing second-generation current controlled conveyor (CCCII)-based first-order all-pass filters is presented. The proposed filter uses only three CCCIIs, one current-controlled resistor and two grounded capacitors. The center frequency (??c) and the quality factor (Q) can be independently adjusted through the bias current of the CCCII...
This work presents the first demonstration of high temperature energy storage, using HfO2 MIM capacitors, for energy scavenging in hostile environments. The work builds upon previous efforts to make capacitors operational at temperatures in excess of 600 K and aims to provide a scalable capacitor based storage technology. Presented are the results of storage decay for both 35 nm and 60 nm HfO2 dielectrics...
This paper describes theoretical as well as practical aspects in designing low phase noise LC CMOS oscillators. It starts with an overview of the different oscillator performance parameters found in a typical oscillator specification sheet. It also describes the LC-tank oscillation phenomena by analyzing a simplified LC oscillator circuit. Oscillator phase noise analysis is then introduced as a logical...
A part of the signaling systems related to a rapid transit railway is using the track circuit to detect trains and to deliver train operation services on carriage. Because the interval of one block for a rapid transit railway is as long as 1500 [m], transmission of signal information throughout a track circuit has some troubles. So a compensation capacitor should be installed every 20 [m]. Moreover,...
There are demands for very large KVA switched reluctance drives (SRD) for many applications. However, one of the key issues is to ensure that the current and voltage capabilities of IGBTs are enough to safely transfer the power from the supply to the SRM. This paper extends the snubber topology of full bridge circuit to the asymmetric bridge circuit of SRDs, proposes and evaluates three different...
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