A 2.3-GHz fully integrated dc-dc converter based on electromagnetically coupled class-D LC oscillators achieving 78.1% efficiency in 22-nm FDSOI CMOS
Lade...
Autor:in (Körperschaft)
Publikationsdatum
2021
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
IEEE Solid-State Circuits Letters
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
4
Ausgabe / Nummer
Seiten / Dauer
218-221
Patentnummer
Verlag / Herausgebende Institution
IEEE
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
This letter introduces a fully integrated dc–dc converter based on electromagnetically coupled class-D LC oscillators featuring on-chip stacked 8-shaped transformers in a 22-nm FDSOI CMOS process. The GHz-range resonant frequency of the proposed converter enables high integration of the passive components, achieving up to 3.2-W/mm2 power density. The on-chip 8-shaped stacked transformers reach 16.9 quality factor and 0.91 coupling coefficient, demonstrating 78.1% converter efficiency. Furthermore, the twisted nature of the 8-shaped transformers introduces a magnetic field cancellation mechanism that minimizes the parasitic coupling between the transformers, saving 25% area in one single converter unit and 47% in the converter array, with respect to a spiral transformer implementation. In addition, the field intensity is reduced by 27 dB outside of the transformer borders compared with a spiral implementation, which helps to mitigate issues, such as parasitic magnetic coupling with neighboring circuits and electromagnetic interference.
Schlagwörter
Transformers, Density measurement, Power system measurements, Couplings, System-on-chip, Spirals, Magnetic shielding, 8-shaped, crosstalk, DC–DC converters, electromagnetic interference (EMI), fully integrated voltage regulator (FIVR), on-chip transformer, power management, resonant converters, switched capacitor
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
2573-9603
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Nein
Zukunftsfelder FHNW
Zero Emission
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Closed
Lizenz
Zitation
Novello, A., Atzeni, G., Cristiano, G., Coustans, M., & Jang, T. (2021). A 2.3-GHz fully integrated dc-dc converter based on electromagnetically coupled class-D LC oscillators achieving 78.1% efficiency in 22-nm FDSOI CMOS. IEEE Solid-State Circuits Letters, 4, 218–221. https://doi.org/10.1109/LSSC.2021.3126736