Essays about: "Switching power supply mode"

Found 5 essays containing the words Switching power supply mode.

1. Low-Power Policies Based on DVFS for the MUSEIC v2 System-on-Chip
University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)
Author : Siva Sai Reddy Mallangi; [2017]
Keywords : Multi functional health monitoring wearable devices are quite prominent these days. Usually these devices are battery-operated and consequently are limited by their battery life from few hours to a few weeks depending on the application . Of late; it was realized that these devices; which are currently being operated at fixed voltage and frequency; are capable of operating at multiple voltages and frequencies. By switching these voltages and frequencies to lower values based upon power requirements; these devices can achieve tremendous benefits in the form of energy savings. Dynamic Voltage and Frequency Scaling DVFS techniques have proven to be handy in this situation for an efficient trade-off between energy and timely behavior. Within imec; wearable devices make use of the indigenously developed MUSEIC v2 Multi Sensor Integrated circuit - version 2.0 . This system is optimized for efficient and accurate collection; processing; and transfer of data from multiple health sensors. MUSEIC v2 has limited means in controlling the voltage and frequency dynamically. In this thesis we explore how traditional DVFS techniques can be applied to the MUSEIC v2. Experiments were conducted to find out the optimum power modes to efficiently operate and also to scale up-down the supply voltage and frequency. Considering the overhead caused when switching voltage and frequency; transition analysis was also done. Real-time and non real-time benchmarks were implemented based on these techniques and their performance results were obtained and analyzed. In this process; several state of the art scheduling algorithms and scaling techniques were reviewed in identifying a suitable technique. Using our proposed scaling technique implementation; we have achieved 86.95% power reduction in average; in contrast to the conventional way of the MUSEIC v2 chip’s processor operating at a fixed voltage and frequency. Techniques that include light sleep and deep sleep mode were also studied and implemented; which tested the system’s capability in accommodating Dynamic Power Management DPM techniques that can achieve greater benefits. A novel approach for implementing the deep sleep mechanism was also proposed and found that it can obtain up to 71.54% power savings; when compared to a traditional way of executing deep sleep mode. Keywords - low-power; DVFS; DPM; energy; wearable devices; voltage and frequency scal- ing; låg effekt; DVFS; DPM; energi; bärbara enheter; spänning och frekvensskalning;

Abstract : Multi functional health monitoring wearable devices are quite prominent these days. Usually these devices are battery-operated and consequently are limited by their battery life (from few hours to a few weeks depending on the application). READ MORE
2. Designing and Maximizing Switch-Mode Efficiency of MODPSU, the Modular Power Supply
University essay from Lunds universitet/Institutionen för elektro- och informationsteknik
Author : Niclas Arndt; [2016]
Keywords : DC DC; SMPS; optimization; power supply; Technology and Engineering;

Abstract : This work is an investigation into practical design and loss minimization of DC/DC-switched power supplies, enabling cooler operation, smaller size, and additional or wider areas of use. There is an abundance of switch controller ICs on the market and a few of the manufacturers offer very sophisticated design tools that suggest operating parameters and grade components. READ MORE
3. Design of power supplies for Piezo LEGS and SiC experiment : KTH Student satellite MIST
University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)
Author : Simon Johansson; [2016]
Keywords : Silicon Carbide; Satellite; Electronics; Power Supply; Boost converter; Buck converter; Switching Converter; Linear Converter; PCB; Kiselkarbid; Satellit; Elektronik; Strömförsörjning; Boost regulator; Buck regulator; Switch-mode regulator; Linjär regulator; PCB;

Abstract : KTH is funding a project whose goal is to send a satellite into space. This project is called MIST (Miniature Student Satellite) which is assembled by a team of students at KTH. On the satellite there are experiments that are invented by other teams, in two of those experiments a power supply is required. READ MORE
4. Solar Energy Control System Design
University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)
Author : Sun Yang; [2013]
Keywords : ;

Abstract : This thesis covers design, simulation and implementation of a solar energy control system for an on grid energy storage device. The design covers several control methods such as energy balance control, operating mode switching and data exchange. READ MORE
5. An Integrated High Efficiency DC-DC Converter in 65 nm CMOS
University essay from Elektroniksystem
Author : Vir Varinder Manh; [2010]
Keywords : DC-DC Converter; Voltage Regulator; Buck; PWM; PFM; High Efficiency; Switching; Amplifier; Comparator;

Abstract : This thesis work describes the implementation perspective of an integrated high efficiency DC-DC converter implemented in 65 nm CMOS. The implemented system employs the Buck converter topology to down-convert the input battery voltages. This converter offers its use as a power management unit in portable battery operated devices. READ MORE

Result pages:

1