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Automatic load-based MOSFET segmentation for switching DC-DC converters

Jindrich Windels (UGent) , Ann Monté (UGent) , Herbert De Pauw (UGent) and Jan Doutreloigne (UGent)
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Abstract
This paper proposes an automated approach for the optimization of the number of active segments in switching DC-DC converters with a segmented power stage. The drain-source voltage of the active power MOSFET segments is used to estimate the load current, and an automated segment controller activates an optimized number of segments. Using this approach automatically balances the switching loss and the conduction loss in the converter over the load range. The proposed concept is implemented in a prototype discrete 500 kHz boost converter, which confirms the optimized efficiency over the load range. Potential applications include high power discrete converters, where multiple power INTOSFETs in parallel are already used and monolithically integrated converters, where the power MOSFET segments, drivers and control circuits are integrated on a single ASIC.
Keywords
switching converters, DC-DC, SMPS, width-switching

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Citation

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MLA
Windels, Jindrich, Ann Monté, Herbert De Pauw, et al. “Automatic Load-based MOSFET Segmentation for Switching DC-DC Converters.” 2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES). Ed. Andrzej Napieralski. Lodz, Poland: Department of Microelectronics and Computer Science of the Lodz University of Technology, 2014. 397–400. Print.
APA
Windels, J., Monté, A., De Pauw, H., & Doutreloigne, J. (2014). Automatic load-based MOSFET segmentation for switching DC-DC converters. In Andrzej Napieralski (Ed.), 2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES) (pp. 397–400). Presented at the 21st International Conference on Mixed Design of Integrated Circuits and Systems (MIXDES), Lodz, Poland: Department of Microelectronics and Computer Science of the Lodz University of Technology.
Chicago author-date
Windels, Jindrich, Ann Monté, Herbert De Pauw, and Jan Doutreloigne. 2014. “Automatic Load-based MOSFET Segmentation for Switching DC-DC Converters.” In 2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES), ed. Andrzej Napieralski, 397–400. Lodz, Poland: Department of Microelectronics and Computer Science of the Lodz University of Technology.
Chicago author-date (all authors)
Windels, Jindrich, Ann Monté, Herbert De Pauw, and Jan Doutreloigne. 2014. “Automatic Load-based MOSFET Segmentation for Switching DC-DC Converters.” In 2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES), ed. Andrzej Napieralski, 397–400. Lodz, Poland: Department of Microelectronics and Computer Science of the Lodz University of Technology.
Vancouver
1.
Windels J, Monté A, De Pauw H, Doutreloigne J. Automatic load-based MOSFET segmentation for switching DC-DC converters. In: Napieralski A, editor. 2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES). Lodz, Poland: Department of Microelectronics and Computer Science of the Lodz University of Technology; 2014. p. 397–400.
IEEE
[1]
J. Windels, A. Monté, H. De Pauw, and J. Doutreloigne, “Automatic load-based MOSFET segmentation for switching DC-DC converters,” in 2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES), Lublin, Poland, 2014, pp. 397–400.
@inproceedings{4427274,
  abstract     = {This paper proposes an automated approach for the optimization of the number of active segments in switching DC-DC converters with a segmented power stage. The drain-source voltage of the active power MOSFET segments is used to estimate the load current, and an automated segment controller activates an optimized number of segments. Using this approach automatically balances the switching loss and the conduction loss in the converter over the load range. The proposed concept is implemented in a prototype discrete 500 kHz boost converter, which confirms the optimized efficiency over the load range. Potential applications include high power discrete converters, where multiple power INTOSFETs in parallel are already used and monolithically integrated converters, where the power MOSFET segments, drivers and control circuits are integrated on a single ASIC.},
  author       = {Windels, Jindrich and Monté, Ann and De Pauw, Herbert and Doutreloigne, Jan},
  booktitle    = {2014 PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS & SYSTEMS (MIXDES)},
  editor       = {Napieralski, Andrzej},
  isbn         = {9788363578046},
  keywords     = {switching converters,DC-DC,SMPS,width-switching},
  language     = {eng},
  location     = {Lublin, Poland},
  pages        = {397--400},
  publisher    = {Department of Microelectronics and Computer Science of the Lodz University of Technology},
  title        = {Automatic load-based MOSFET segmentation for switching DC-DC converters},
  year         = {2014},
}

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