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An operation of electronic equipment is dependent on a power supply. Today, a trend of only one AC/DC adapter is used for supplying an electronic system. Thus, an electronic equipment with various power supply requirements uses some internal DC/DC converters. These DC/DC converters adjust input voltage to lower or/and higher value or generate a negative voltage. The classical DC/DC converters are...
A charge pump with enhanced output voltage pumping gain and efficiency for low-voltage applications is proposed in this paper. Except for threshold voltage drop and body effect, another factor that limits voltage pumping efficiency is undesired charge transfer. The proposed charge pump circuit utilizes charge transfer switches to eliminate the effects of threshold voltage drop and body effect. Moreover,...
The charge pumps are used in many areas of electronic industry for generating higher (or negative) voltage than a power supply. Our article is focused on the development two variants of the charge pump in discrete form. We consider Dickson charge pump and the Fibonacci charge pump that have to meet several criteria listed below. These charge pumps were designed and verified by simulations then they...
The power supply is one of the major challenges for applications like internet of things IoTs and smart home. The maintenance issue of batteries and the limited power level of energy harvesting is addressed by the integrated micro power supply presented in this paper. Connected to the 120/230 Vrms mains, which is one of the most reliable energy sources and anywhere indoor available, it provides a...
A multi-mode charge pump based stimulator for cardiac pacemaking is presented. This system operates both as voltage-mode and charge-mode stimulator and can deliver voltage stimulus to the tissue with an arbitrary waveform. The core of the stimulator is a reconflgurable 3-stage charge pump circuit with variable switching frequency allowing to adjust the stimulus level to the desired value in a wide...
In this paper we demonstrate a fully integrated 300 V low current charge pump design which has been manufactured using Teledyne DALSA's triple well 800 nm high voltage IC process. This charge pump is powered by a 5 V supply, drawing less than 2% of the USB 2.0 maximum current, thus enabling future low-cost compact point-of-care diagnostic devices that would be connected to and powered off a laptop...
Charge pump circuits are currently becoming a realistic alternative to the switching regulators in high voltage generation applications, especially in fully integrated circuit systems. This paper discusses several stabilization methods to improve voltage performance and robustness of integrated high voltage charge pumps. All the discussion and measurements are based on a monolithic integrated high...
This paper presents a study and an analysis of the existing solutions for driving headphones in mobile platforms. solution converge to the use of G class audio amplifier. Such an amplifier requires a symmetrical power supply in order to get rid of huge external capacitors. Voltage scaling is mandatory in order to increase the system efficiency. The system is to be integrated into a mobile platform...
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