A 1.25-GHz fully integrated dc-dc converter using electromagnetically coupled class-D LC oscillators
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 Journal of Solid-State Circuits
Themenheft
DOI der Originalpublikation
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
56
Ausgabe / Nummer
12
Seiten / Dauer
3639-3654
Patentnummer
Verlag / Herausgebende Institution
IEEE
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
Fully integrated power management circuits are promising candidates to provide small form factors and meet high power density demand of modern computing platforms. This article presents a new fully integrated dc–dc converter topology based on electromagnetically coupled class-D LC oscillators that enables up to 2.5 GHz switching frequency, allowing aggressive scaling of the on-chip passives. On-chip transformers and flying capacitors are designed to electromagnetically couple the two oscillators, and gigahertz-range switching frequency is achieved by the quasi-adiabatic switching of the parasitic capacitors. The proposed converter is implemented in a 0.18- μm CMOS process occupying 1.61 mm2 for 7.8 nH inductance (high efficiency version) and 0.37 mm2 for 3.1 nH (high power density version), achieving 1 W/mm2 peak power density. This work also proposes a duty-cycling scheme that improves the efficiency under light loads, which stays close to the peak from 4 μW up to 0.5 W, and in continuous operation mode the output voltage ripple is 12 mV without attaching any output capacitor thanks to the four-phase electromagnetic power delivery scheme.
Schlagwörter
Inductors, Oscillators, Voltage control, Capacitors, DC-DC power converters, System-on-chip, Switching frequency, Power transformers, DC-DC converters, fully integrated voltage regulator (FIVR), on-chip transformer, power management, resonant converters, spiral inductor, switched-capacitor (SC)
Fachgebiet (DDC)
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
0018-9200
1558-173X
1558-173X
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., Künzli, J., Cristiano, G., Coustans, M., & Jang, T. (2021). A 1.25-GHz fully integrated dc-dc converter using electromagnetically coupled class-D LC oscillators. IEEE Journal of Solid-State Circuits, 56(12), 3639–3654. https://doi.org/10.1109/JSSC.2021.3112129