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Showing 1 to 16 of 16 for “"multiphase buck"”.
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High-Frequency Modeling and Analyses for Buck and Multiphase Buck Converters
… load transient, etc. For the VR designs using multiphase buck converters, one of the results from these stringent challenges is a large amount of output capacitors, which is undesired from both a cost and a motherboard real estate perspective. In order to save the output capacitors, the …
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Design and Implementation of a Multiphase Buck Converter for Front End 48V-12V Intermediate Bus Converters
… converter topology was explored, with a multiphase buck converter as the front end, followed by an LLC resonant converter. The multiphase buck converter provides regulation, while the LLC provides isolation. With the buck converter providing regulation, the switching frequency of the …
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High performance control of VRM circuits
… and transient response requirements. The multiphase buck converter topology is popularly used for such application, because of its ability to handle large load current and to achieve fast dynamic transient response under large step-load condition.The first part of this thesis fully …
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Wide-bandwidth digital controller for multi-phase converters
… practical wide bandwidth digital controller for multiphase buck converters. Traditional implementations of multiphase converters have a performance comparable to single-phase implementations, with a bandwidth limited to a fraction of the per-phase switching frequency Fsw. The goal of this project …
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Multiphase Voltage Regulator Modules with Magnetic Integration to Power Microprocessors
… microprocessors. As an enabling technology, multiphase converters have become the standard practice in VRM industry. The primary objectives of this dissertation are to develop advanced topologies and innovative integrated magnetics for high-efficiency, high-power-density and fast-transient …
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Chemical And Biological Treatment Of Mature Landfill Leachate
… difficult to be achieved with the conventional multiphase buck converter commonly used on PC motherboards. For faster data transfer, a decrease in the output voltage is needed. This decrease causes small duty cycle that is accompanied by critical problems which impairs the efficiency. Therefore, …
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A Two-Phase Buck Converter with Optimum Phase Selection for Low Power Applications
… heavy load. The power stage of traditional buck converter is optimized for maximum load, at the cost of light-load efficiency. Wei proposed a multiphase buck converter incorporating the baby-buck concept and optimum number of phases (ONP) control. This thesis research investigated Wei's …
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High-Frequency and High-Performance VRM Design for the Next Generations of Processors
… module (VRM) design, which is based on the multiphase interleaving buck topology, is thoroughly analyzed. The analysis results of the control bandwidths versus the VRM transient voltage spikes highlight the trend of high-frequency VRM design for smaller size and faster transient response. …
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Investigation of Multiphase Coupled Inductor Topologies for Point-of-Load Applications
… and simple converter topology, an interleaved, multiphase buck converter has been widely used to power microprocessors in information industry. As modern microprocessors continuously advance, the required current for high-performance microprocessors used in data center applications could be …
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High Frequency High-Efficiency Voltage Regulators for Future Microprocessors
… The current VR solution is the 12V-input multiphase interleaved buck converter. The switching frequency is around 300KHz. This approach has several limitations for the future. OSCON capacitor is one limitation due to its large ESR and ESL; the low switching frequency the second limitation …
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Investigation of Multiphase Coupled-Inductor Buck Converters in Point-of-Load Applications
Multiphase interleaving buck converters are widely used in today's industrial point-of-load (POL) converters, especially the microprocessor voltage regulators (VRs). The issue of today's multiphase interleaving buck converters is the conflict between the high efficiency and the fast transient in …
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High Frequency, High Efficiency Two-Stage Approach for Future Microprocessors
… than today's practice. Unfortunately, the multiphase buck converter cannot benefit from it due to the low efficiency at high switching frequency. The extreme duty is the bottleneck. The extreme duty cycle increases VR switching loss, reverse recovery loss, and conduction loss; therefore …
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Modeling and Stability Analysis for Multiphase Constant On-Time Control With Phase Overlapping
Multiphase buck voltage regulators (VRs) powering today's high-performance processor loads must regulate output voltage within a small tolerance window and handle a large steady-state current. For output voltage regulation, multiphase current-mode and V² constant on-time (COT) control techniques …
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Investigation on Interleaved Boost Converters and Applications
… On the other hand, the multi-channel interleaved buck converter for the VR application has been intensively studied and thoroughly explored. One basic approach of this study is trying to extend the existing knowledge and techniques obtained from multiphase buck converters to the multi-channel …
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48V/1V Voltage Regulator for High-Performance Microprocessors
… size and cost to a state-of-the-art 12V multiphase buck regulator. Leveraging the indirect-coupling concept, magnetic components are standardized, enabling scalability and facilitating multiphase operation. A prototype is constructed and tested to validate the CTVR's performance. With a …
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An approach to controlling an active parallel interface between a transient energy source and a dc voltage bus
Made available in DSpace on 2011-01-14T22:45:16Z (GMT). No. of bitstreams: 3 Niemoeller_Benjamin.pdf: 5415802 bytes, checksum: b9fbded7b4e7cfbd9c253c64c9a6b1e2 (MD5) license.txt: 4069 bytes, checksum: 595b596e4eb73314f3447fa9e32a5425 (MD5) BAN Whole thesis rev16.doc: 16991232 bytes, checksum: …