High accuracy and high stability magnet power supply by four-phase buck type DC/DC converter

Kim, S.C.; Ha, Kuendong; Huang, Junxian

doi:10.1109/icpe.2007.4692383

2007 7th Internatonal Conference on Power Electronics 2007

DOI: 10.1109/icpe.2007.4692383

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High accuracy and high stability magnet power supply by four-phase buck type DC/DC converter

S.C. Kim

Kuendong Ha

Junxian Huang

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2023

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“…More studies considered high-order filters in different circuit topologies and applications. A 42 kHz, 4 kW 4-phase buck converter with a fourth-order filter, and damping branch in each phase for a magnet power supply in a linear accelerator was described in [9]. A 500 W, 50 kHz buck converter with a fourth-order filter was presented in [10], which utilized the two filter stages to implement two feedback loops for fast envelope tracking.…”

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Design Procedure for Reduced Filter Size in a Buck Converter Using a Fourth-Order Resonance Filter

Kandeel¹,

O’Driscoll

O’Mathuna

et al. 2023

IEEE Trans. Power Electron.

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This article presents a novel design procedure for fourth order and fourth-order resonance (4thRes) output filters, for given buck converter specifications, making components selection a straightforward process. An accurate filter analysis is provided to predict the filter component currents and voltages in both frequency and time domains. Application of the analysis in a design study of a 20 MHz, 5.4 W buck converter shows that the 4thRes filter has the potential to reduce the output passive components for a wide duty cycle range. As compared with a second-order filter at V IN = 6.6 V to V OUT = 1.8 V, total inductance, inductor energy, capacitance, and capacitor energy are 58%, 35%, 45%, and 31% lower, respectively. Air-core printed circuit board (PCB) integrated solenoid inductors are considered for implementation and testing within a prototype converter to show the impact of these filters on the converter performance. The 4thRes filter achieved 3.7% and 3.6% higher full-load efficiency than the second-and fourth-order filters, respectively, and a better load transient performance.

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confidence: 99%

Design Procedure for Reduced Filter Size in a Buck Converter Using a Fourth-Order Resonance Filter

Kandeel¹,

O’Driscoll

O’Mathuna

et al. 2023

IEEE Trans. Power Electron.

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show abstract

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High accuracy and high stability magnet power supply by four-phase buck type DC/DC converter

Cited by 1 publication

References 3 publications

Design Procedure for Reduced Filter Size in a Buck Converter Using a Fourth-Order Resonance Filter

Design Procedure for Reduced Filter Size in a Buck Converter Using a Fourth-Order Resonance Filter

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