A Dynamic Bootstrap Voltage Technique for a High-Efficiency Buck Converter in a Universal Serial Bus Power Delivery Device

@article{Chen2016ADB,
  title={A Dynamic Bootstrap Voltage Technique for a High-Efficiency Buck Converter in a Universal Serial Bus Power Delivery Device},
  author={Wei-Chung Chen and Ying-Wei Chou and Meng-Wei Chien and H. Y. Chen and Shang-Hsien Yang and Ke-Horng Chen and Ying-Hsi Lin and Chao-Cheng Lee and Shian-Ru Lin and Tsung-Yen Tsai},
  journal={IEEE Transactions on Power Electronics},
  year={2016},
  volume={31},
  pages={3002-3015}
}
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-μm CMOS process showed a 92% peak efficiency from 1 mA to 1 A. The maximum driving current was higher than 5 A… CONTINUE READING