TY - GEN
T1 - Current-Sourced Hybrid Switched-Capacitor Converter for Data Center Power Delivery
AU - Delmar, Aria K.
AU - Stillwell, Andrew
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper presents the design of a hybrid switched- capacitor converter (SCC) for data center point-of-load (PoL) power delivery. As processor technology trends towards higher power levels with low processor voltage levels, an alternative method for delivering the resulting high current is desired. Chip integration of the PoL converter is a possible solution with potential system-level benefits. Previous hybrid switched-capacitor power converters achieved high power density and high-efficiency conversion, but face limitations in chip-level integration due to reliance on magnetics as the output filter. Here, we propose a hybrid SCC with a current-sourced input stage and no magnetics at the output. By keeping the magnetics at the input, the converter design presented in this paper is capable of a system-in-package (SiP) or system-on-chip (SoC) implementation, with the magnetics connected externally at a low-current node. A 48 V to 6 V experimental hardware prototype is developed as a proof-of-concept, with results demonstrating a peak efficiency of 91.9%.
AB - This paper presents the design of a hybrid switched- capacitor converter (SCC) for data center point-of-load (PoL) power delivery. As processor technology trends towards higher power levels with low processor voltage levels, an alternative method for delivering the resulting high current is desired. Chip integration of the PoL converter is a possible solution with potential system-level benefits. Previous hybrid switched-capacitor power converters achieved high power density and high-efficiency conversion, but face limitations in chip-level integration due to reliance on magnetics as the output filter. Here, we propose a hybrid SCC with a current-sourced input stage and no magnetics at the output. By keeping the magnetics at the input, the converter design presented in this paper is capable of a system-in-package (SiP) or system-on-chip (SoC) implementation, with the magnetics connected externally at a low-current node. A 48 V to 6 V experimental hardware prototype is developed as a proof-of-concept, with results demonstrating a peak efficiency of 91.9%.
KW - current-sourced converter
KW - data center PoL converter
KW - hybrid switched-capacitor
UR - http://www.scopus.com/inward/record.url?scp=85192779547&partnerID=8YFLogxK
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U2 - 10.1109/APEC48139.2024.10509139
DO - 10.1109/APEC48139.2024.10509139
M3 - Conference contribution
AN - SCOPUS:85192779547
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1357
EP - 1362
BT - 2024 IEEE Applied Power Electronics Conference and Exposition, APEC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 39th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2024
Y2 - 25 February 2024 through 29 February 2024
ER -