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This paper presents a new 48 V-to-1 V hybrid converter. The converter utilizes two interleaved inductors to achieve complete soft-charging of flying capacitors to efficiently support high output currents. This dual inductor hybrid converter (DIHC) features fewer number of switches and more effective switch utilization than a recently reported hybrid Dickson converter, leading to substantially less conduction losses presented by a smaller equivalent output impedance. Experimental results verify the converter's operation principles and advantages in a 300-kHz 20-W prototype achieving 95.02% peak efficiency and 225 W/in3 power density. Its advantages and performance promise a good candidate converter architecture for applications that require large conversion ratios and high output currents, such as data centers and high-performance digital systems.
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This content will become publicly available on November 10, 2026
Planar Transformer Enabled 380V/48V LLC Converter for Data Center Applications Based on SiC Devices
This paper presents a 400 V-to-48 V LLC resonant converter for data center applications, designed for high efficiency and low profile. A planar transformer using PC95 ferrite cores and optimized multi-strand Litz windings minimizes AC resistance and conduction losses while maintaining manufacturability. Analytical modeling and loss evaluation guided optimal strand configurations. A 2.8-kW prototype with full-bridge primary and diode rectification achieved output at 200 V input, with stable zero-voltage switching and regulated 48 V output under multiple load conditions. Results verify design feasibility and provide a basis for future improvements in thermal management and power density.
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- PAR ID:
- 10703178
- Publisher / Repository:
- IEEE
- Date Published:
- ISBN:
- 979-8-3315-6925-9
- Page Range / eLocation ID:
- 1 to 5
- Format(s):
- Medium: X
- Location:
- Fayetteville, AR, USA
- Sponsoring Org:
- National Science Foundation
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