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 language | English |
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Title of host publication | Proceedings of 4 th IEEE International Future Energy Electronics Conference |
Number of pages | 8 |
Publisher | IEEE |
Publication date | 2019 |
ISBN (Print) | 978-1-7281-3153-5 |
Publication status | Published - 2019 |
Event | 2019 IEEE 4th International Future Energy Electronics Conference - Parkroyal on Beach Road, Singapore, Singapore Duration: 25 Nov 2019 → 28 Nov 2019 Conference number: 4 https://ieeexplore.ieee.org/xpl/conhome/8995899/proceeding |
Conference
Conference | 2019 IEEE 4th International Future Energy Electronics Conference |
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Number | 4 |
Location | Parkroyal on Beach Road |
Country/Territory | Singapore |
City | Singapore |
Period | 25/11/2019 → 28/11/2019 |
Internet address |
Keywords
- Battery chargers
- Switched mode power supplies
- ASIC
- Analog integrated circuit