TY - GEN
T1 - Digital Lock-In Controller IC for Optimized Operation of Resonant SCC
AU - Urkin, Tom
AU - Sovik, Guy
AU - Peretz, Mor Mordechai
N1 - Publisher Copyright: © 2020 IEEE.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - This paper introduces a lock-in integrated controller for resonant SCC. The controller identifies the resonant period of each sub-circuit on-the-fly and locks-in to the correct switching time to fully utilize the charge transfer rate for each flying capacitor. The various modules of the controller are detailed, including the auto-tuner and sequencer which accommodate any mismatch, variations or drifts of component values or circuit configuration. The IC has been designed and fabricated on a 0.18μm 5V process resulting in effective silicon area of 0.64mm2. Post-layout results of the controller IC operating in closed-loop are provided, demonstrating accurate lock-in for two resonators with individual independent resonant characteristics. A full-scale hardware prototype of 650W 4:1 switched-tank-converter is used to validate the controller's operation prior to IC fabrication, demonstrating excellent lock-in capabilities resulting in high efficiency of up to 98.6%.
AB - This paper introduces a lock-in integrated controller for resonant SCC. The controller identifies the resonant period of each sub-circuit on-the-fly and locks-in to the correct switching time to fully utilize the charge transfer rate for each flying capacitor. The various modules of the controller are detailed, including the auto-tuner and sequencer which accommodate any mismatch, variations or drifts of component values or circuit configuration. The IC has been designed and fabricated on a 0.18μm 5V process resulting in effective silicon area of 0.64mm2. Post-layout results of the controller IC operating in closed-loop are provided, demonstrating accurate lock-in for two resonators with individual independent resonant characteristics. A full-scale hardware prototype of 650W 4:1 switched-tank-converter is used to validate the controller's operation prior to IC fabrication, demonstrating excellent lock-in capabilities resulting in high efficiency of up to 98.6%.
KW - ZCS
KW - integrated circuit
KW - resonant converter
KW - soft switching
KW - switched capacitor
UR - http://www.scopus.com/inward/record.url?scp=85087749438&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/APEC39645.2020.9124148
DO - https://doi.org/10.1109/APEC39645.2020.9124148
M3 - Conference contribution
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1236
EP - 1243
BT - APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
T2 - 35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
Y2 - 15 March 2020 through 19 March 2020
ER -