Control of a Discontinuous-Conduction-Mode ZVS Buck-Boost Topology for Microprocessor Core Power

May 28, 2013
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At PCIM Europe 2013, Vicor presented a paper exploring the potential for gains in efficiency, power density, and performance when using discontinuous-conduction-mode (DCM) Zero-Voltage Switching (ZVS) buck-boost topology and its use in providing microprocessor core power. In this paper, the authors navigate the design challenges encountered in implementing such a voltage regulation scheme that are not seen in the traditional continuous-conduction-mode multiphase buck topology. The model of the plant is analyzed and a control methodology is proposed. Experimental results successfully validate the performance to the Intel VR12 specification.

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Other Presentation Paper Given at PCIM 2013

Controlled-Bus Architecture with Voltage Equalization: a System Approach to Higher Efficiency in Low Voltage DC Distribution

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