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.
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Showing 1 to 20 of 28 for “"power MOSFET"”.
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Optimization of Power MOSFET for High-Frequency Synchronous Buck Converter
… 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 the relationship between the …
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Thermal Characterization of Die-Attach Degradation in the Power MOSFET
The thermal performance of the power MOSFET module is subject to change over its lifetime. This is caused by the growth of voids and other defects in the die-attach layer. The goal of this dissertation is to develop measurement techniques and finite element simulations that can measure the changes …
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Design and fabrication of a vertical power MOSFET with an integral turn-off driver
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
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Design and Verification of a High Voltage, Capacitance Voltage Measurement System for Power MOSFETs
… and characterization of silicon carbide (SiC) power MOSFETs. The following study discusses the circuit layout and automation software for a measurement system that can perform CV measurements for all three MOSFET capacitances, CGS, CDS, and CGD. This measurement system can perform low voltage …
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Design of Area-Efficient Integrated Gate Drivers
MOSFET gate drivers are important in modern power electronics due to the ubiquity of applications that require the fast and controlled switching of power MOSFETs. A controller serves as the first building block in many such systems, but with limited drive current and logic level voltage signals, it …
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Time domain device modeling of High Frequency Power MOSFETs
The development of the High Frequency Power MOSFET has brought about a need for accurate models. Now that the frequency range of these MOSFETs is in domains where typically scattering parameter measurements are used, a broad band device model can prove to be extremely useful. This thesis summarizes …
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A Wide Bandgap Silicon Carbide (SiC) Gate Driver for High Temperature, High Voltage, and High Frequency Applications
… potential of silicon carbide (SiC) for modern power electronics applications is revolutionary because of its superior material properties including substantially better breakdown voltage, power density, device leakage, thermal conductivity, and switching speed. Integration of gate driver …
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Resonant Gate Drive Techniques for Power MOSFETs
… circuits, loss mechanism in conventional power MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) gate drive circuits is analyzed. Resonant gate drive techniques are investigated and a new resonant gate drive circuit is presented. The presented circuit adds minor complexity to …
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High-frequency multi-resonant power conversion techniques
… technique, a novel concept in dc/dc power conversion, is proposed. The essence of the multi-resonant power conversion is the effective utilization of the major parasitic reactive components of the power stage, including the leakage inductance of the power transformer, output …
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Investigation of Power Semiconductor Devices for High Frequency High Density Power Converters
The next generation of power converters not only must meet the characteristics demanded by the load, but also has to meet some specific requirements like limited space and high ambient temperature etc. This needs the power converter to achieve high power density and high temperature operation. It …
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Microfluidic systems for cell transfection using sonoporation and electroporation
… circuit and a high voltage switch using a power MOSFET. The electroporation system has been designed, developed and tested. The system was evaluated with HeLa cells, THP-1 cells and plasmid DNA (pEGFP-N1) to evaluate transfection rates under a variety of sonoporation conditions. This study …
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Comparative Study of Power Semiconductor Devices in a Multilevel Cascaded H-Bridge Inverter
… battery energy storage system (BESS) using SiC power MOSFETs and Si IGBTs. Two crucial performance drivers for inverter applications are power loss and efficiency. Both of these are investigated in this thesis. Power devices with similar voltage and current ratings are used in the same inverter …
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Design of a Very High Frequency dc-dc boost converter
… component volume is a perennial concern in power conversion. With new circuit architectures operating at extreme high frequencies it becomes possible to miniaturize the passive components needed for a power converter, and to achieve dramatic improvements in converter transient performance. …
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A zero-voltage switching technique for high frequency buck converter ICs
… composed of a helper inductor and two helper power MOSFETs that compliment the switching transition of a conventional synchronous buck converter topology. It is shown in this thesis that by using the described topology, the switching losses of the high-side power MOSFET in a synchronous buck …
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Double-Sided Liquid Cooling for Power Semiconductor Devices Using Embedded Power Technology
Power electronics is a constantly growing and demanding technical field. Consumer demand and developing technologies have made the improvement of power density a primary emphasis of research for this area. Power semiconductors present some of the major challenges for increasing system level power …
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Pulsed MOSFET based linear transformer driver
Pulsed power flash radiography is a rapidly growing technology which involves the generation of intense and short bursts of electric pulses to generate high energy X-rays to inspect dense objects. The generation of fast transition, short width, repetitive pulses for effective output requires …
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Characterization and Modeling of 4H-SiC Low Voltage MOSFETs and Power MOSFETs
… circuits on SiC has profound applications. SiC power devices have proved their superiority in terms of high temperature operation, faster switching frequencies and larger power densities when compared with Si power devices. The control of SiC power devices however, lies in the hands of low …
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Development of PID voltage control for DC motor using arduino
… up using gate driver and then will be sent to power MOSFET gates for triggering rectifier. The output produced from this controlled rectifier is in DC form. The open loop and closed loop simulations analyses for PID control voltage were successfully conducted. Results show that the error of …
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A 3-phase Z-source inverter driven by a novel hybrid switching algorithm
… for the above purposes are a reduction inhigh power semi-conductor components (e.g. power MOSFET). There is also areduction in switching losses and inherent shoot through protection.Furthermore, the inverter is more robust in the sense that it is not vulnerable to spurious shoot through, which …
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Gating Methods for High-Voltage Silicon Carbide Power MOSFETs
… associated with driving Silicon Carbide (SiC) power devices, and to compare the potential gate drive methods for these devices which address those challenges. SiC power devices present many benefits that make them suitable for next generation automotive, power utility grid, and energy …
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