Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger

Jacob E. F. Overgaard, Jens Christian Hertel, Tiberiu-Gabriel Zsurzsan, Zhe Zhang

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

The improvements in modern circuit technology reduce system size, improve the efficiency and reduce the cost. Utilization of soft-switching resonant power converters give high density high effeciency power converters for narrow output voltage ranges. To overcome this a cascaded switched-capacitor dc-dc converter is used to implement a Universal Serial Bus Power Delivery compliant charger. The converter uses a custom designed application specific integrated circuit designed for switched-capacitor dc-dc converters and wide bandgap technology allowing high frequency, high power design. The converter achieves peak efficiencies up to 98 % at 60 W output power with a corresponding junction temperature of 50 ◦C. Worst case junction temperatures reach 64 ◦C and is viable for use in longterm battery charger systems. The cascaded power stages take up 14 mm × 22 mm.
Original languageEnglish
Title of host publicationProceedings of 4 th IEEE International Future Energy Electronics Conference
Number of pages8
PublisherIEEE
Publication date2019
ISBN (Print)978-1-7281-3153-5
Publication statusPublished - 2019
Event4th IEEE International Future Energy Electronics Conference - Parkroyal on Beach Road, Singapore, Singapore
Duration: 25 Nov 201928 Nov 2019
http://www.ifeec.tw/

Conference

Conference4th IEEE International Future Energy Electronics Conference
LocationParkroyal on Beach Road
CountrySingapore
CitySingapore
Period25/11/201928/11/2019
Internet address

Keywords

  • Battery chargers
  • Switched mode power supplies
  • ASIC
  • Analog integrated circuit

Cite this

Overgaard, J. E. F., Hertel, J. C., Zsurzsan, T-G., & Zhang, Z. (2019). Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger. In Proceedings of 4 th IEEE International Future Energy Electronics Conference IEEE.
Overgaard, Jacob E. F. ; Hertel, Jens Christian ; Zsurzsan, Tiberiu-Gabriel ; Zhang, Zhe. / Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger. Proceedings of 4 th IEEE International Future Energy Electronics Conference . IEEE, 2019.
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title = "Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger",
abstract = "The improvements in modern circuit technology reduce system size, improve the efficiency and reduce the cost. Utilization of soft-switching resonant power converters give high density high effeciency power converters for narrow output voltage ranges. To overcome this a cascaded switched-capacitor dc-dc converter is used to implement a Universal Serial Bus Power Delivery compliant charger. The converter uses a custom designed application specific integrated circuit designed for switched-capacitor dc-dc converters and wide bandgap technology allowing high frequency, high power design. The converter achieves peak efficiencies up to 98 {\%} at 60 W output power with a corresponding junction temperature of 50 ◦C. Worst case junction temperatures reach 64 ◦C and is viable for use in longterm battery charger systems. The cascaded power stages take up 14 mm × 22 mm.",
keywords = "Battery chargers, Switched mode power supplies, ASIC, Analog integrated circuit",
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Overgaard, JEF, Hertel, JC, Zsurzsan, T-G & Zhang, Z 2019, Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger. in Proceedings of 4 th IEEE International Future Energy Electronics Conference . IEEE, 4th IEEE International Future Energy Electronics Conference , Singapore, Singapore, 25/11/2019.

Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger. / Overgaard, Jacob E. F.; Hertel, Jens Christian; Zsurzsan, Tiberiu-Gabriel; Zhang, Zhe.

Proceedings of 4 th IEEE International Future Energy Electronics Conference . IEEE, 2019.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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AU - Zhang, Zhe

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N2 - The improvements in modern circuit technology reduce system size, improve the efficiency and reduce the cost. Utilization of soft-switching resonant power converters give high density high effeciency power converters for narrow output voltage ranges. To overcome this a cascaded switched-capacitor dc-dc converter is used to implement a Universal Serial Bus Power Delivery compliant charger. The converter uses a custom designed application specific integrated circuit designed for switched-capacitor dc-dc converters and wide bandgap technology allowing high frequency, high power design. The converter achieves peak efficiencies up to 98 % at 60 W output power with a corresponding junction temperature of 50 ◦C. Worst case junction temperatures reach 64 ◦C and is viable for use in longterm battery charger systems. The cascaded power stages take up 14 mm × 22 mm.

AB - The improvements in modern circuit technology reduce system size, improve the efficiency and reduce the cost. Utilization of soft-switching resonant power converters give high density high effeciency power converters for narrow output voltage ranges. To overcome this a cascaded switched-capacitor dc-dc converter is used to implement a Universal Serial Bus Power Delivery compliant charger. The converter uses a custom designed application specific integrated circuit designed for switched-capacitor dc-dc converters and wide bandgap technology allowing high frequency, high power design. The converter achieves peak efficiencies up to 98 % at 60 W output power with a corresponding junction temperature of 50 ◦C. Worst case junction temperatures reach 64 ◦C and is viable for use in longterm battery charger systems. The cascaded power stages take up 14 mm × 22 mm.

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Overgaard JEF, Hertel JC, Zsurzsan T-G, Zhang Z. Cascaded Switched-Capacitor dc-dc Converters for a USB Power Delivery Compliant Charger. In Proceedings of 4 th IEEE International Future Energy Electronics Conference . IEEE. 2019