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

被引：0
|
作者：
Overgaard, Jacob E. E. [1 ]
Hertel, Jens Christian [1 ]
Zsurzsan, Gabriel [1 ]
Zhang, Zhe [1 ]
机构：
[1] Tech Univ Denmark, Dept Elect Engn, Lyngby, Denmark
来源：
2019 IEEE 4TH INTERNATIONAL FUTURE ENERGY ELECTRONICS CONFERENCE (IFEEC) | 2019年
关键词：
Battery chargers; Switched mode power supplies; ASIC; Analog integrated circuit;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
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 60W output power with a corresponding junction temperature of 50 degrees C. Worst case junction temperatures reach 64 degrees C and is viable for use in longterm battery charger systems. The cascaded power stages take up 14 mm x 22 mm.
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页数：8
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