A dynamic bootstrap voltage technique for a high-efficiency buck converter in a universal serial bus power delivery device

Wei Chung Chen; Ying Wei Chou; Meng Wei Chien; Hsin Chieh Chen; Shang Hsien Yang; Ke-Horng Chen; Ying His Lin; Chao Cheng Lee; Shian Ru Lin; Tsung Yen Tsai

doi:10.1109/TPEL.2015.2453511

A dynamic bootstrap voltage technique for a high-efficiency buck converter in a universal serial bus power delivery device

Wei Chung Chen, Ying Wei Chou, Meng Wei Chien, Hsin Chieh Chen, Shang Hsien Yang, Ke-Horng Chen, Ying His Lin, Chao Cheng Lee, Shian Ru Lin, Tsung Yen Tsai

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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, and the efficiencywas 88%.Comparedwith the efficiency of the converter without the DBV technique, the efficiency of the converter with DBV technique was improved by about 28%.

Original language	English
Article number	7151824
Pages (from-to)	3002-3015
Number of pages	14
Journal	IEEE Transactions on Power Electronics
Volume	31
Issue number	4
DOIs	https://doi.org/10.1109/TPEL.2015.2453511
State	Published - Apr 2016

Keywords

Adjustable bootstrap capacitance (ABC)
Dual N-type MOSFETs
Dynamic bootstrap voltage (DBV)
Light-load efficiency

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10.1109/TPEL.2015.2453511

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Chen, W. C., Chou, Y. W., Chien, M. W., Chen, H. C., Yang, S. H., Chen, K.-H., Lin, Y. H., Lee, C. C., Lin, S. R., & Tsai, T. Y. (2016). A dynamic bootstrap voltage technique for a high-efficiency buck converter in a universal serial bus power delivery device. IEEE Transactions on Power Electronics, 31(4), 3002-3015. Article 7151824. https://doi.org/10.1109/TPEL.2015.2453511

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abstract = "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, and the efficiencywas 88%.Comparedwith the efficiency of the converter without the DBV technique, the efficiency of the converter with DBV technique was improved by about 28%.",

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AU - Chen, Wei Chung

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AU - Chien, Meng Wei

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AU - Yang, Shang Hsien

AU - Chen, Ke-Horng

AU - Lin, Ying His

AU - Lee, Chao Cheng

AU - Lin, Shian Ru

AU - Tsai, Tsung Yen

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AB - 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, and the efficiencywas 88%.Comparedwith the efficiency of the converter without the DBV technique, the efficiency of the converter with DBV technique was improved by about 28%.

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A dynamic bootstrap voltage technique for a high-efficiency buck converter in a universal serial bus power delivery device

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Keywords

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