Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 31 for “"fast transient response"”.
-
Modeling and Design of a Monolithic High Frequency Synchronous Buck with Fast Transient Response
… performance, high functionality, small profile, fast transient and low cost are the most wanted features for modern power management ICs, especially for mobile power. In order to reduce profile, the number of external components should be as small as possible, which means that compensator, ramp …
-
Analysis and control of monolithic piezoelectric nano-actuator
… of the piezoelectric ceramic's high resolution, fast transient response, and potential low cost. However, hysteresis nonlinearity and lightly damped vibration exist in the system, which limit the actuator applications. This work focuses on the hysteresis characteristics in time and frequency …
-
Design and evaluation of a very high frequency dc/dc converter
… efficiency over a wide load range, and excellent transient performance. A 110 MHz, 23 W experimental converter has been built and evaluated. The input voltage range is 8-16 V (14.4 V nominal), and the selectable output voltage is between 22-34 V (33 V nominal). The converter achieves higher than …
-
Microprocessor-based soft variable structure control for D.C. motor speed regulation
… produces robustness to parameter variation and fast transient response, is discussed in this thesis. The digital implementation techniques are presented in the aspects of sample rate, prefilter design, hardware selection, and microprocessor arithmetic operation. Simulation and experimental …
-
Application Considerations of Multiphase Monolithic Buck Regulators with Coupled Inductors
… to and beyond 100A power rail and microseconds transient recovery requirements for applications in wireless, healthcare, defense, industrial, and automotive industries. This thesis investigates multiphase design and application for monolithic buck switching regulators to multiply output current …
-
Design of a high-efficiency, high-performance zero-voltage-switched battery charger-discharger for the NASA EOS space platform
… characteristics including low bus impedance and fast transient response.
-
Low-voltage High-efficiency Fast-transient Voltage regulator Module
In order to meet demands for faster and more efficient data processing, modern microprocessors are being designed with lower voltage implementations. The processor voltage supply in future generation processors will decrease to 1.1 V ~ 1.8V. More devices will be packed on a single processor chip, …
-
Multilevel Buck Converter Topologies and Their Applications
… with series capacitor Buck converter to enable fast transient response is proposed. Experimental prototypes have been built and tested to validate the proposed methods.
-
AN ADAPTIVE AND SELF-COGNITIVE ACE FILTER
… a high noise, reduction ratio together with a fast transient response. In this thesis, the application of Kalman filtering of ACE signals is discussed and an adaptive ACE filter is described which achieves both a high noise reduction ratio and fast response with excellent flexibility for …
-
Optimization of Power MOSFET for High-Frequency Synchronous Buck Converter
… (SBC) in order to achieve low cost, low profile, fast transient response and high power density. However, high frequency also causes more power loss on MOSFETs. Optimization of the MOSFETs plays an important role in the system performance. Circuit and device modeling is important in understanding …
-
Control and Modeling of High-Frequency Voltage Regulator Modules for Microprocessor Application
… (VRM) challenges of high bandwidth control with fast transient response, high current output, simple implementation, and efficient 48V solution are tackled in this dissertation. With the push for control bandwidth to meet design specifications for microprocessor VRM with larger and faster load …
-
Photovoltaic Source Simulators for Solar Power Conditioning Systems: Design Optimization, Modeling, and Control
… simulator: (i) high power-stage efficiency, (ii) fast transient response-time, (iii) output impedance matching with actual PV generator, and (iv) precise reference generation technique. Throughout this research, two different PV source simulator systems are designed, modeled, and experimentally …
-
A Novel Inverse Charge Constant On-Time Control for High Performance Voltage Regulators
… at light loads, while also supporting a very fast transient response. Thus, the variable-frequency constant on-time current-mode (COTCM) control scheme is widely used in the VRs, as it can automatically reduce its switching frequency during light-load conditions. But, from transient point of …
-
Design of a very high frequency resonant boost DC-DC converter
… topology examined features low parts count and fast transient response but suffers from higher device stresses compared to other topologies that use a larger number of passive components. A new design methodology for the proposed converter topology is developed. This design procedure - unlike …
-
Optimization of LLC Resonant Converters: State-trajectory Control and PCB based Magnetics
With the fast development of information technology (IT) industry, the demand and market volume for off-line power supplies keeps increasing, especially those for desktop, flat-panel TV, telecommunication, computer server and datacenter. An off-line power supply normally consists of electromagnetic …
-
EFFICIENT VOLTAGE REGULATION USING SWITCHED CAPACITOR DC/DC CONVERTER FROM BATTERY AND ENERGY HARVESTING POWER SOURCES
… the SC power stage for accurate regulation and fast transient response, a control scheme named adaptive gain/pulse control is developed. The research also investigates the use of multipath compensation scheme in SC converters for ultra fast and low noise performance. The techniques and the …
-
Voltage-Offset Resistive Control for Photovoltaics
… on maintaining low sensitivity to irradiance transients. Daily PV electrical characteristics are observed to identify trends in the maximum power point (MPP) movement. Analysis shows that VRC has inherently low sensitivity to irradiance changes and is an effective inner-loop control method to …
-
Design of a low-voltage low-power dc-dc HF converter
… miniaturization that can be achieved and hampers fast transient response. Therefore, design methods that reduce energy storage requirements and expand efficient operation range are desirable. This thesis focuses on the development of a High Frequency (HF) dc-dc SEPIC converter exploiting resonant …
-
Analysis and Applications of the Km Algorithm in Type-2 Fuzzy Logic Control and Decision Making
… to balance the amount of the compromise between faster response and smaller overshoot. As an extension of the study of symmetric IT2 FLC, a class of non-symmetric IT2 FLC was considered. By comparing the expressions of the non-symmetric and symmetric IT2 FLCs, the similarities and differences in …
-
Investigation of Multiphase Coupled Inductor Topologies for Point-of-Load Applications
… voltage regulator design with a fast transient response. On the other hand, the design challenges of voltage regulators in mobile applications are also increasing due to the stringent requirement on the device thickness and the battery life. In a multiphase buck converter, …
Page 1 of 2