TY - GEN
T1 - 3D LEGO-PoL
T2 - 36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021
AU - Baek, Jaeil
AU - Elasser, Youssef
AU - Chen, Minjie
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6/14
Y1 - 2021/6/14
N2 - This paper presents a merged-two-stage hybrid switched-capacitor point-of-load converter with 3D-embedded coupled inductors, vertical power delivery, and LEGO-PoL architecture. By merging a switched-capacitor circuit with a multiphase buck circuit, the 3D LEGO-PoL converter offers reduced device stress and minimized magnetic size, and enables soft switching, soft charging, voltage balancing, and current sharing. A prototype converter with 3D embedded coupled inductors is designed to deliver power vertically from the motherboard to microprocessors with minimized 2D area. A 675 W, 48 V to 1.5 V/450 A hybrid converter with a peak efficiency of 93.3%, full load efficiency of 87.2%, current density of 0.57 A/mm2, and power density of 688 W/in3 was built and tested to verify the effectiveness of the hybrid converter architecture with 3D embedded coupled inductors and vertical power delivery.
AB - This paper presents a merged-two-stage hybrid switched-capacitor point-of-load converter with 3D-embedded coupled inductors, vertical power delivery, and LEGO-PoL architecture. By merging a switched-capacitor circuit with a multiphase buck circuit, the 3D LEGO-PoL converter offers reduced device stress and minimized magnetic size, and enables soft switching, soft charging, voltage balancing, and current sharing. A prototype converter with 3D embedded coupled inductors is designed to deliver power vertically from the motherboard to microprocessors with minimized 2D area. A 675 W, 48 V to 1.5 V/450 A hybrid converter with a peak efficiency of 93.3%, full load efficiency of 87.2%, current density of 0.57 A/mm2, and power density of 688 W/in3 was built and tested to verify the effectiveness of the hybrid converter architecture with 3D embedded coupled inductors and vertical power delivery.
KW - 3D packaging
KW - Coupled inductor
KW - DC-DC power conversion
KW - Hybrid switched-capacitor circuit
KW - Merged-two-stage
KW - Point of load
KW - Vertical power delivery
UR - http://www.scopus.com/inward/record.url?scp=85115695732&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85115695732&partnerID=8YFLogxK
U2 - 10.1109/APEC42165.2021.9487080
DO - 10.1109/APEC42165.2021.9487080
M3 - Conference contribution
AN - SCOPUS:85115695732
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1321
EP - 1327
BT - 2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 14 June 2021 through 17 June 2021
ER -