用于下一代超高功率微处理器的 1200A 48V 至 1V 开关总线转换器.pdf

1、OCP Global Summit October 18,2023|San Jose,CAA 1200-A/48-V-to-1-V Switching Bus Converter for Next-Generation Ultra-High-Power Microprocessors2023 OCP Global SummitFuture Technologies SymposiumYicheng Zhu,Ting Ge,Nathan M.Ellis,Jiarui Zou,and Robert C.N.Pilawa-PodgurskiUniversity of California,Berke

2、leyOctober 18,2023OutlineBackground and MotivationProposed Topology and Operating PrinciplesProposed switching bus converter(SBC)for direct 48-V-to-1-V conversion(maximum tested current:1200 A)Hardware Prototype and Experimental Results Conclusions2 Rapid growth in microprocessor power demand driven

3、 by AI,machine learning,etc.Data Center Power DeliveryNVIDIA A100(400 W),2020Credit:NVIDIANVIDIA DGX A100 SystemGH200(1000 W)H100(700 W)A100(400 W)V100(300 W)P100(300 W)GF106(106 W)NVIDIA GH200(1000 W),2023Credit:NVIDIANVIDIA H100(700 W),2022Credit:NVIDIAGM107(225 W)GK106(150 W)2.5400 W(2020)101000

4、W(2023)106 W(2010)3 Current two-stage lateral power delivery(LPD)architecture Large power distribution network(PDN)and high PDN losses Occupies a large area on the top side of the baseboard48 V to Point-of-Load Power DeliveryLateral power delivery(top view)1 V1 V1 V1 VLateral power delivery(top view

5、)IoutIoutIoutIoutCredit:Nvidia H100 GPU card(700 W),2022Intermediate bus converter(IBC)1 VFix-ratio intermediate bus converter(IBC)Stage 1Point-of-Load(PoL)48 VMulti-phase voltage regulation module(VRM)Stage 2Vbus4 Two-stage lateral power delivery(LPD)Large power distribution network(PDN)Occupies a

6、large area on the top side of the baseboard Single-stage vertical power delivery(VPD)Much smaller PDN Save the topside area for high-speed communication and memories48 V to Point-of-Load Power DeliveryVertical power delivery(side view)Lateral power delivery(top view)IoutIoutIoutIoutCredit:Nvidia H10