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Title: DSP-controlled multiphase hysteretic VRM with current sharing equalization
Authors: Abu-Qahouq, Jaber A.
Pongratananukul, Nattorn
Kasparis, Takis 
Keywords: Microprocessors
DC-to-DC converters
Electric current converters
Issue Date: 2005
Publisher: World Scientific
Source: Journal of Circuits, Systems and Computers, 2005, Volume 14, Issue 6, Pages 1073-1084
Abstract: Many of the new high-speed high-integration density Integrated Circuits (ICs) and future generation of microprocessor powering requirements can be successfully achieved with voltage-mode hysteretic control applied to interleaved multiphase Point-of-Load (POL) DC-DC converters or Voltage Regulator Modules (VRMs). This is because of the several advantages that can be achieved by combining the advantages of hysteretic control and interleaving. However, there are several challenges in combining the two techniques, the most prominent being the current sharing and equalization between the interleaved phases. In this communication, we present a solution based on a real-time DSP controller. Challenges of the implementation will be discussed and experimental results obtained from a prototype will be presented.
ISSN: 02181266 (print)
17936454 (online)
DOI: 10.1142/S0218126605002829
Rights: © World Scientific Publishing Company
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