標題: A Dynamic Bootstrap Voltage Technique for a High-Efficiency Buck Converter in a Universal Serial Bus Power Delivery Device
作者: Chen, Wei-Chung
Chou, Ying-Wei
Chien, Meng-Wei
Chen, Hsin-Chieh
Yang, Shang-Hsien
Chen, Ke-Horng
Lin, Ying-Hsi
Lee, Chao-Cheng
Lin, Shian-Ru
Tsai, Tsung-Yen
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Adjustable bootstrap capacitance (ABC);dual N-type MOSFETs;dynamic bootstrap voltage (DBV);light-load efficiency
公開日期: 1-Apr-2016
摘要: The dynamic bootstrap voltage (DBV) technique is proposed to keep high efficiency over wide ranges of load currents for high-power universal serial bus devices. The silicon area of the embedded power management with the DBV technique in the system-on-a-chip can be effectively reduced to 50% of the conventional design with a P-type high-side power MOSFET. Test chips fabricated in 0.25-mu m CMOS process showed a 92% peak efficiency from 1 mA to 1 A. The maximum driving current was higher than 5 A, and the efficiencywas 88%. Compared with the efficiency of the converter without the DBV technique, the efficiency of the converter with DBV technique was improved by about 28%.
URI: http://dx.doi.org/10.1109/TPEL.2015.2453511
http://hdl.handle.net/11536/129320
ISSN: 0885-8993
DOI: 10.1109/TPEL.2015.2453511
期刊: IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume: 31
起始頁: 3002
結束頁: 3015
Appears in Collections:Articles