Multiphase Half-Bridge Current-Doubler Rectifier: A 93.1%-Efficiency Single-Stage 48V Voltage Regulator with 1.04 kW/in3 power density
2023 IEEE Applied Power Electronics Conference and Exposition (APEC)(2023)
摘要
High-efficiency, high-power-density 48V voltage regulator modules (VRMs) are crucial and challenging for 48V data center power architecture. In this paper, the design of the multiphase half-bridge current-doubler rectifier (HBCDR) is reviewed and optimized. Finally, a 48V/1.8V prototype is designed with 93.1% peak efficiency and 1.04 kW/in
3
power density, including its gate driver loss and size. Thermal performance is verified to provide 300A peak output current for 2 ms x 62 Hz. The ultra-high power density and high efficiency show great potential in data center applications.
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关键词
Voltage regulator modules (VRMs),buried vias,magnetic integration
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