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Voltage Regulator Modules (VRM)

D02.3 - Single-Stage Vertical Voltage Regulator for High-Performance Microprocessors

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
To meet the ultra-high current power supply requirements of high-performance microprocessors, this paper proposes a novel single-stage vertical voltage regulator based on current doubler rectifiers (CDR) and fractional turns. Considering the distinct design requirements of transformers and inductors, different magnetic core materials were employed. Furthermore, the inductor core was innovatively reused as part of the transformer, significantly reducing the overall volume of magnetic components. The prototype achieves a low-profile height of 5.6 mm while delivering an outstanding current density of 1.48 A/mm² at full-load current (320 A).