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Title: Multiphase voltage-mode hysteretic controlled VRM with DSP control and novel current sharing
Authors: Kasparis, Takis 
Abu-Qahouq, Jaber A.
Pongratananukul, Nattorn
Keywords: Voltage regulators;Electric currents;Microprocessors;Power resources;Stability
Issue Date: 2002
Publisher: IEEE
Source: 17th Annual IEEE Applied Power Electronics Conference and Exposition, 2002, Dallas, United States
Abstract: Applying the voltage-mode hysteretic control to multiphase Voltage Regulator Modules (VRMs) can satisfy many of the new and future generation of microprocessors and ICs powering requirements. This is because of the numerous advantages that can be obtained when both techniques are used. However, several challenges arise that include current sharing, multiphase control signals distribution, high-speed comparators noise sensitivity, hysteretic band accuracy and stability, VRM operation startup, and the stability of the controller operation at large load transients. Addressing these challenges cannot be easily achieved using analog and discrete components but rather DSP can be used to solve these problems. In this paper, multiphase voltage-mode hysteretic controlled VRM with DSP control and novel current sharing is proposed.
DOI: 10.1109/APEC.2002.989316
Rights: © 2002 IEEE
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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