A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Uittreksel

This paper presents a LED driver IC based on a self-resonant Hybrid-Switched Capacitor Converter (H-SCC) operating in the MHz range. Capacitors and switches of the LED driver are integrated on-chip in a low-cost 5V 0.18μm bulk CMOS technology. The effective chip area is 7.5mm2. A conventional SMD output capacitor and a 6.4 mm2 150nH SMD air-core inductor are enough to operate the driver in a compact PCB area. Integrated zero-current detection (ZCD) circuitry enables self-resonant operation and Zero-Current Switching independently of the output current, inductor tolerances and/or parasitics, improving the converter efficiency at light loads. A ZCD threshold control enables continuous conduction mode too, to improve efficiency at large currents. The experimental results show a peak efficiency of 92.2% and a maximum power density of 373mW/mm2. The LED driver is able to control a 700mA LED down to 10% of its nominal current and can adjust to LED voltage variations, avoiding the need for LED binning.
Originele taal-2Engels
Titel43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium
Plaats van productiePiscataway
UitgeverijInstitute of Electrical and Electronics Engineers
Pagina's344-347
Aantal pagina's4
ISBN van elektronische versie978-1-5090-5025-3
ISBN van geprinte versie978-1-5090-5026-0
DOI's
StatusGepubliceerd - 2017
Evenement47th European Solid-State Device Research Conference (ESSDERC 2017) & 43rd European Solid-State Circuits Conference (ESSCIRC 2017), 11-14 September 2017, Leuven, Belgium - Leuven, België
Duur: 11 sep 201714 sep 2017
http://www.esscirc-essderc2017.org/

Congres

Congres47th European Solid-State Device Research Conference (ESSDERC 2017) & 43rd European Solid-State Circuits Conference (ESSCIRC 2017), 11-14 September 2017, Leuven, Belgium
Verkorte titelESSDERC/ESSCIRC
LandBelgië
StadLeuven
Periode11/09/1714/09/17
Internet adres

Vingerafdruk

Light emitting diodes
Capacitors
Surface mount technology
Polychlorinated biphenyls
Switches
Electric potential
Air
Costs

Citeer dit

Castellanos Rodriguez, J. C., Turhan, M., Hendrix, M. A. M., van Roermund, A. H. M., & Cantatore, E. (2017). A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS. In 43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium (blz. 344-347). Piscataway: Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ESSCIRC.2017.8094596
Castellanos Rodriguez, J.C. ; Turhan, M. ; Hendrix, M.A.M. ; van Roermund, A.H.M. ; Cantatore, E. / A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS. 43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium . Piscataway : Institute of Electrical and Electronics Engineers, 2017. blz. 344-347
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title = "A 92.2{\%} peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS",
abstract = "This paper presents a LED driver IC based on a self-resonant Hybrid-Switched Capacitor Converter (H-SCC) operating in the MHz range. Capacitors and switches of the LED driver are integrated on-chip in a low-cost 5V 0.18μm bulk CMOS technology. The effective chip area is 7.5mm2. A conventional SMD output capacitor and a 6.4 mm2 150nH SMD air-core inductor are enough to operate the driver in a compact PCB area. Integrated zero-current detection (ZCD) circuitry enables self-resonant operation and Zero-Current Switching independently of the output current, inductor tolerances and/or parasitics, improving the converter efficiency at light loads. A ZCD threshold control enables continuous conduction mode too, to improve efficiency at large currents. The experimental results show a peak efficiency of 92.2{\%} and a maximum power density of 373mW/mm2. The LED driver is able to control a 700mA LED down to 10{\%} of its nominal current and can adjust to LED voltage variations, avoiding the need for LED binning.",
author = "{Castellanos Rodriguez}, J.C. and M. Turhan and M.A.M. Hendrix and {van Roermund}, A.H.M. and E. Cantatore",
year = "2017",
doi = "10.1109/ESSCIRC.2017.8094596",
language = "English",
isbn = "978-1-5090-5026-0",
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booktitle = "43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium",
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Castellanos Rodriguez, JC, Turhan, M, Hendrix, MAM, van Roermund, AHM & Cantatore, E 2017, A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS. in 43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium . Institute of Electrical and Electronics Engineers, Piscataway, blz. 344-347, Leuven, België, 11/09/17. https://doi.org/10.1109/ESSCIRC.2017.8094596

A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS. / Castellanos Rodriguez, J.C.; Turhan, M.; Hendrix, M.A.M.; van Roermund, A.H.M.; Cantatore, E.

43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium . Piscataway : Institute of Electrical and Electronics Engineers, 2017. blz. 344-347.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

TY - GEN

T1 - A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS

AU - Castellanos Rodriguez, J.C.

AU - Turhan, M.

AU - Hendrix, M.A.M.

AU - van Roermund, A.H.M.

AU - Cantatore, E.

PY - 2017

Y1 - 2017

N2 - This paper presents a LED driver IC based on a self-resonant Hybrid-Switched Capacitor Converter (H-SCC) operating in the MHz range. Capacitors and switches of the LED driver are integrated on-chip in a low-cost 5V 0.18μm bulk CMOS technology. The effective chip area is 7.5mm2. A conventional SMD output capacitor and a 6.4 mm2 150nH SMD air-core inductor are enough to operate the driver in a compact PCB area. Integrated zero-current detection (ZCD) circuitry enables self-resonant operation and Zero-Current Switching independently of the output current, inductor tolerances and/or parasitics, improving the converter efficiency at light loads. A ZCD threshold control enables continuous conduction mode too, to improve efficiency at large currents. The experimental results show a peak efficiency of 92.2% and a maximum power density of 373mW/mm2. The LED driver is able to control a 700mA LED down to 10% of its nominal current and can adjust to LED voltage variations, avoiding the need for LED binning.

AB - This paper presents a LED driver IC based on a self-resonant Hybrid-Switched Capacitor Converter (H-SCC) operating in the MHz range. Capacitors and switches of the LED driver are integrated on-chip in a low-cost 5V 0.18μm bulk CMOS technology. The effective chip area is 7.5mm2. A conventional SMD output capacitor and a 6.4 mm2 150nH SMD air-core inductor are enough to operate the driver in a compact PCB area. Integrated zero-current detection (ZCD) circuitry enables self-resonant operation and Zero-Current Switching independently of the output current, inductor tolerances and/or parasitics, improving the converter efficiency at light loads. A ZCD threshold control enables continuous conduction mode too, to improve efficiency at large currents. The experimental results show a peak efficiency of 92.2% and a maximum power density of 373mW/mm2. The LED driver is able to control a 700mA LED down to 10% of its nominal current and can adjust to LED voltage variations, avoiding the need for LED binning.

U2 - 10.1109/ESSCIRC.2017.8094596

DO - 10.1109/ESSCIRC.2017.8094596

M3 - Conference contribution

SN - 978-1-5090-5026-0

SP - 344

EP - 347

BT - 43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium

PB - Institute of Electrical and Electronics Engineers

CY - Piscataway

ER -

Castellanos Rodriguez JC, Turhan M, Hendrix MAM, van Roermund AHM, Cantatore E. A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS. In 43rd IEEE European Solid State Circuits Conference ESSCIRC 2017, 11-14 September 2017, Leuven, Belgium . Piscataway: Institute of Electrical and Electronics Engineers. 2017. blz. 344-347 https://doi.org/10.1109/ESSCIRC.2017.8094596