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 |