標題: Dynamic Bootstrap Voltage Technique for High Efficiency Buck Converter in Universal Serial Bus Power Device Supplying System
作者: Chen, Wei-Chung
Chen, Ke-Horng
Wey, Chin-Long
Lin, Ying-Hsi
Tsai, Tsung-Yen
Huang, Chen-Chih
Lee, Chao-Cheng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: dual N-type MOSFETs;dynamic bootstrap capacitance;light-load efficiency
公開日期: 2013
摘要: for high power universal serial bus (USB) devices, the dynamic bootstrap voltage (DBV) technique is proposed to keep high efficiency over a wide load range, including light and heavy loads. Besides, the silicon area of power management of the system-on-a-chip (Soc) can be effectively reduced to 50% of conventional design with P-type high-side power MOSFET. The test chip fabricated in 0.25 mu m CMOS process shows 92% peak efficiency from 1mA to 1A. The maximum driving current is higher than 3A with 88 % efficiency. Compared to that without the DBV technique, the efficiency is improved about 28%.
URI: http://hdl.handle.net/11536/23720
ISBN: 978-1-4799-0277-4978-1-4799-0280-4
期刊: PROCEEDINGS OF THE 2013 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC)
起始頁: 165
結束頁: 168
Appears in Collections:Conferences Paper