Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery

Youssef Elasser; Jaeil Baek; Kaladhar Radhakrishnan; Houle Gan; Jonathan Douglas; Vivek De; Shuai Jiang; Harish K. Krishnamurthy; Xin Li; Charles R. Sullivan; Minjie Chen

doi:10.1109/APEC43580.2023.10131163

Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery

Youssef Elasser, Jaeil Baek, Kaladhar Radhakrishnan, Houle Gan, Jonathan Douglas, Vivek De, Shuai Jiang, Harish K. Krishnamurthy, Xin Li, Charles R. Sullivan, Minjie Chen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

14 Scopus citations

Abstract

This paper presents the design and optimization of a miniaturized 48-V-to-l-V 240-A linear-extendable group oper- ated point-of-load (LEGO-PoL) CPU voltage regulation module (VRM) - Mini-LEGO - with 336 mm2 area and 8.4 mm height for vertical power delivery. The Mini-LEGO features compact device implementation, simplified gate drive circuitry, optimized magnetics, and switches at 1.5 MHz. The overall converter area, including all power stage and gate drive circuitry, is 336 mm 2 with 0.71 A/mm2 current area density. The vertical coupled inductor delivers 80 A with a thickness of 2.5 mm. It achieves a peak efficiency of 87.1 %, a full load efficiency of 84.1 %, and a power density of 1,390 W/in3 with the maximum device junction temperature maintained below 100°C after five minutes of full- load operation.

Original language	English (US)
Title of host publication	APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1959-1966
Number of pages	8
ISBN (Electronic)	9781665475396
DOIs	https://doi.org/10.1109/APEC43580.2023.10131163
State	Published - 2023
Event	38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023 - Orlando, United States Duration: Mar 19 2023 → Mar 23 2023

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume	2023-March

Conference

Conference	38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023
Country/Territory	United States
City	Orlando
Period	3/19/23 → 3/23/23

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Keywords

coupled inductor
dc-dc power conversion
point-of-Ioad
switched-capacitor
vertical power delivery
voltage regulator module (VRM)

Access to Document

10.1109/APEC43580.2023.10131163

Cite this

Elasser, Y., Baek, J., Radhakrishnan, K., Gan, H., Douglas, J., De, V., Jiang, S., Krishnamurthy, H. K., Li, X., Sullivan, C. R., & Chen, M. (2023). Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery. In APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition (pp. 1959-1966). (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2023-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC43580.2023.10131163

Elasser, Youssef ; Baek, Jaeil ; Radhakrishnan, Kaladhar et al. / Mini-LEGO : A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery. APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., 2023. pp. 1959-1966 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

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title = "Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery",

abstract = "This paper presents the design and optimization of a miniaturized 48-V-to-l-V 240-A linear-extendable group oper- ated point-of-load (LEGO-PoL) CPU voltage regulation module (VRM) - Mini-LEGO - with 336 mm2 area and 8.4 mm height for vertical power delivery. The Mini-LEGO features compact device implementation, simplified gate drive circuitry, optimized magnetics, and switches at 1.5 MHz. The overall converter area, including all power stage and gate drive circuitry, is 336 mm 2 with 0.71 A/mm2 current area density. The vertical coupled inductor delivers 80 A with a thickness of 2.5 mm. It achieves a peak efficiency of 87.1 %, a full load efficiency of 84.1 %, and a power density of 1,390 W/in3 with the maximum device junction temperature maintained below 100°C after five minutes of full- load operation.",

keywords = "coupled inductor, dc-dc power conversion, point-of-Ioad, switched-capacitor, vertical power delivery, voltage regulator module (VRM)",

author = "Youssef Elasser and Jaeil Baek and Kaladhar Radhakrishnan and Houle Gan and Jonathan Douglas and Vivek De and Shuai Jiang and Krishnamurthy, {Harish K.} and Xin Li and Sullivan, {Charles R.} and Minjie Chen",

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language = "English (US)",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

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Elasser, Y, Baek, J, Radhakrishnan, K, Gan, H, Douglas, J, De, V, Jiang, S, Krishnamurthy, HK, Li, X, Sullivan, CR & Chen, M 2023, Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery. in APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition. Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2023-March, Institute of Electrical and Electronics Engineers Inc., pp. 1959-1966, 38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023, Orlando, United States, 3/19/23. https://doi.org/10.1109/APEC43580.2023.10131163

Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery. / Elasser, Youssef; Baek, Jaeil; Radhakrishnan, Kaladhar et al.
APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., 2023. p. 1959-1966 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2023-March).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Gan, Houle

AU - Douglas, Jonathan

AU - De, Vivek

AU - Jiang, Shuai

AU - Krishnamurthy, Harish K.

AU - Li, Xin

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N2 - This paper presents the design and optimization of a miniaturized 48-V-to-l-V 240-A linear-extendable group oper- ated point-of-load (LEGO-PoL) CPU voltage regulation module (VRM) - Mini-LEGO - with 336 mm2 area and 8.4 mm height for vertical power delivery. The Mini-LEGO features compact device implementation, simplified gate drive circuitry, optimized magnetics, and switches at 1.5 MHz. The overall converter area, including all power stage and gate drive circuitry, is 336 mm 2 with 0.71 A/mm2 current area density. The vertical coupled inductor delivers 80 A with a thickness of 2.5 mm. It achieves a peak efficiency of 87.1 %, a full load efficiency of 84.1 %, and a power density of 1,390 W/in3 with the maximum device junction temperature maintained below 100°C after five minutes of full- load operation.

AB - This paper presents the design and optimization of a miniaturized 48-V-to-l-V 240-A linear-extendable group oper- ated point-of-load (LEGO-PoL) CPU voltage regulation module (VRM) - Mini-LEGO - with 336 mm2 area and 8.4 mm height for vertical power delivery. The Mini-LEGO features compact device implementation, simplified gate drive circuitry, optimized magnetics, and switches at 1.5 MHz. The overall converter area, including all power stage and gate drive circuitry, is 336 mm 2 with 0.71 A/mm2 current area density. The vertical coupled inductor delivers 80 A with a thickness of 2.5 mm. It achieves a peak efficiency of 87.1 %, a full load efficiency of 84.1 %, and a power density of 1,390 W/in3 with the maximum device junction temperature maintained below 100°C after five minutes of full- load operation.

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KW - switched-capacitor

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Elasser Y, Baek J, Radhakrishnan K, Gan H, Douglas J, De V et al. Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery. In APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc. 2023. p. 1959-1966. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC43580.2023.10131163

Mini-LEGO: A 1.5-MHz 240-A 48-V-to-1-V CPU VRM with 8.4-mm Height for Vertical Power Delivery

Abstract

Publication series

Conference

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

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