Board Design Architecture and optimization for High-power 48V Voltage Regulator

Datacenters towards low carbon emission, low energy consumption, green energy saving, and sustainability has become the trends. Using 48V as the intermediate bus perfectly meets these trends. 48V brings advantages to server power delivery, but there are many high-speed signals routed in the server m...

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Bibliographic Details
Published in:	2022 17th International Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT) pp. 1 - 4
Main Authors:	Qin, Shijuan, Chang, Patt, Lee, Falconee, Su, Thonas, Chen, Denis, Guo, Ariel, Yuan, Weijie, Cao, Mark, Chang, Aje, Fan, Donald, Li, Yl, Hsu, Jimmy, Liang, Kevin, Tsai, Bryant, Tzeng, Kate
Format:	Conference Proceeding
Language:	English
Published:	IEEE 26-10-2022
Subjects:	48V Energy consumption Micromechanical devices Packaging Power Delivery Printed circuits Regulators Server Servers
Online Access:	Get full text
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Summary:	Datacenters towards low carbon emission, low energy consumption, green energy saving, and sustainability has become the trends. Using 48V as the intermediate bus perfectly meets these trends. 48V brings advantages to server power delivery, but there are many high-speed signals routed in the server mother board, those traces are sensitive to noise caused by Voltage Regulator (VR). Currently, 4SV only exists in some special areas of the motherboard. This paper will introduce an innovative study to use two stage power architecture with 48V rack. Based on this architecture, we have compared distribution loss and PCI Express * IO Margin Test (IOMT) and studied noise coupling of 12V and 4SV within same Printed Circuit Board (PCB).
ISSN:	2150-5942
DOI:	10.1109/IMPACT56280.2022.9966679