Global ETD Search
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Showing 1 to 16 of 16 for “"48V"”.
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48V/1V Voltage Regulator for High-Performance Microprocessors
… The prevailing trend in state-of-the-art 48V solutions centers around the adoption of two-stage configurations, wherein the second stage can leverage conventional 12V solutions. However, this approach imposes limitations on power density and efficiency, given that power traverses two …
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Optimal Design of MHz LLC Converter for 48V Bus Converter Application
The intermediate bus architecture employing the 48V bus converter is one of the most popular power architecture. 48V to 12V bus converter has wide applications in telecommunications, networks, aerospace, and military, etc. However, today's state of the art products has low power rating or power …
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Design and Implementation of a Multiphase Buck Converter for Front End 48V-12V Intermediate Bus Converters
… operates with 40V - 60V input, nominally 48V, and outputs 36V at 1 kW, which is the input to the LLC regulating 36V – 12V. Both open and closed loop was measured for the buck and the full converter. EMI performance was not measured or addressed in this work.
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Power Architectures and Design for Next Generation Microprocessors
… the 12V DC server rack distribution with a 48V DC distribution, producing a significant overall system efficiency improvement. However, 48V rack architecture raises significant challenges for the voltage regulator modules (VRMs) required for powering the processor. The 48V VRM in the …
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Design and Construction of 1800W Modular Multiple Input Single Output Non-isolated DC-DC Converters
… buck-boost topology to output a single 48V from multiple nominal 24V inputs. The MISO converter implements a modular approach to deliver 1800W output power. Each module in the MISO is rated at 600W and they share the output power equally. Hardware results show that the converter produces …
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Control and Modeling of High-Frequency Voltage Regulator Modules for Microprocessor Application
… 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 transients, control can be saturated and lost for a significant period of time during …
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Improvements to a Bi-directional Flyback DC-DC Converter for Battery System of the DC House Project
… to charge from as well as discharge to the 48V bus line of the DC House. The design provided a 35W prototype to demonstrate the converter’s feasibility. Further improvements to increase power output through changes in design as well as improving the control scheme of the bi-directional …
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Implementation of ACR and AVR controls for high voltage gain DC-DC Converter
… output voltage 400V DC by boosting input voltage 48V DC and by using 4- stage proposed converter, but any drop in the value of input voltage will effect on the output voltage, so that when battery voltage drop to 40V the output will be 340V. After implementing the control system for the AVR and …
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Investigating the trade-offs involved in augmenting a DC brushless motor with an active heat sink in order to improve performance.
… that the torque density of an EC-4 pole 30 48V Maxon DC brushless motor can be improved by augmenting it with an electronics fan and an annulus. Results showed that the housing to ambient thermal resistance of the motor was decreased by 68% from the experimentally found value of 11.5KW-3 to …
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High Frequency, High Efficiency Two-Stage Approach for Future Microprocessors
… concept is also effective in laptop computer and 48V DPS applications. It has been experimentally proved that two-stage VR is able to achieve higher switching frequency than single stage not only at full load condition but also at light load condition by the proposed ABVP and AFP concept based on …
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Analysis and Optimization of the Two-Phase Series Capacitor Buck DC-DC Converter
… design, and analysis of a sensor-less eGaN-based 48V/5V 2-pscB buck switching converters were verified, and their current sharing characteristics were predicted by the state-space modeling technique. A theoretical comparison is conducted between conventional buck converter and 2-pscB. The results …
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Techno-Economic Analysis of Microgrids with Distributed Energy Resources in Rural Limpopo Province, South Africa
… of PV modules (250 W, 375 W, and 500 W) with a 48V, 14.4 kWh lithium battery were tested, including PV/H2/Grid and PV/BES/H2/Grid setups. Microgrid optimisation results without hydrogen production show that the PV/Grid configuration is the most cost-effective option across all areas. For …
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An Isolated Micro-Converter for Next-Generation Photovoltaic Infrastructure
… method extends the operating range as wide as 12-48V and improves the CEC efficiency to 97.2% in the 250-W prototype. Chapter 4 considers the soft-start of the proposed system, which can have a very large capacitive load from the inverter. A new capacitor-transient limited (CTL) soft-start method …
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High Frequency, High Power Density Integrated Point of Load and Bus Converters
… improve thermal performance in the module. For 48V isolated applications, the current solutions are limited in frequency by high loss generated from the use of traditional topologies, devices, packaging, and transformer design. This dissertation considers the high frequency design of a highly …
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PCB-Based Heterogeneous Integration of LLC Converters
… may be implemented. A 500 kHz, 6-8 kW, 400V/48V, three-phase LLC converter with the suggested magnetic structure achieves 99.1% maximum efficiency and a power density of 1000 W/in3. This dissertation addresses the issues of analysis, magnetic design, expansion to higher power levels, and …
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Theoretical Analysis and Design for the Series-Resonator Buck Converter
High step-down dc/dc converters are widely adopted in a variety of areas such as industrial, automotive, and telecommunication. The 48 V power delivery system becomes increasingly popular for powering high-current and low-voltage chips. The Series-Capacitor Buck (SCB) converter doubles the duty …