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Monolithic integration of the synchronous rectifier in isolated forward DC-DC converters

Jan Doutreloigne (UGent) , Benoit Bakeroot (UGent) , Ann Monté (UGent) and Jindrich Windels (UGent)
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Abstract
The synchronous rectifier in isolated forward DC-DC converters is traditionally built with discrete DMOS power transistors driven directly from the secondary winding of the pulse transformer. Unfortunately, this technique induces very high switching losses, especially at high switching frequency. This paper presents a new synchronous rectifier topology that drives the DMOS devices in a much more power-efficient manner, employing an additional DC-DC buck converter, and that allows monolithic integration of the whole synchronous rectifier electronics in a suitable high-voltage smart-power IC technology. Special circuitry for suppressing sub-threshold conduction of the DMOS transistors is also provided on the chip.
Keywords
Synchronous rectifier, integrated circuit, DC-DC converter, smart-power technology, forward converter, isolated converter

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Citation

Please use this url to cite or link to this publication:

Chicago
Doutreloigne, Jan, Benoit Bakeroot, Ann Monté, and Jindrich Windels. 2012. “Monolithic Integration of the Synchronous Rectifier in Isolated Forward DC-DC Converters.” In WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems, ed. Vincenzo Niola, Zoran Bojkovic, and M Isabel Garcia-Planas, 15–20. WSEAS Press.
APA
Doutreloigne, J., Bakeroot, B., Monté, A., & Windels, J. (2012). Monolithic integration of the synchronous rectifier in isolated forward DC-DC converters. In Vincenzo Niola, Z. Bojkovic, & M. I. Garcia-Planas (Eds.), WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems (pp. 15–20). Presented at the WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems (IMCAS - 2012), WSEAS Press.
Vancouver
1.
Doutreloigne J, Bakeroot B, Monté A, Windels J. Monolithic integration of the synchronous rectifier in isolated forward DC-DC converters. In: Niola V, Bojkovic Z, Garcia-Planas MI, editors. WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems. WSEAS Press; 2012. p. 15–20.
MLA
Doutreloigne, Jan, Benoit Bakeroot, Ann Monté, et al. “Monolithic Integration of the Synchronous Rectifier in Isolated Forward DC-DC Converters.” WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems. Ed. Vincenzo Niola, Zoran Bojkovic, & M Isabel Garcia-Planas. WSEAS Press, 2012. 15–20. Print.
@inproceedings{3214537,
  abstract     = {The synchronous rectifier in isolated forward DC-DC converters is traditionally built with discrete DMOS power transistors driven directly from the secondary winding of the pulse transformer. Unfortunately, this technique induces very high switching losses, especially at high switching frequency. This paper presents a new synchronous rectifier topology that drives the DMOS devices in a much more power-efficient manner, employing an additional DC-DC buck converter, and that allows monolithic integration of the whole synchronous rectifier electronics in a suitable high-voltage smart-power IC technology. Special circuitry for suppressing sub-threshold conduction of the DMOS transistors is also provided on the chip.},
  author       = {Doutreloigne, Jan and Bakeroot, Benoit and Mont{\'e}, Ann and Windels, Jindrich},
  booktitle    = {WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems},
  editor       = {Niola, Vincenzo and Bojkovic, Zoran and Garcia-Planas, M Isabel},
  isbn         = {9781618040855},
  language     = {eng},
  location     = {Rovaniemi, Finland},
  pages        = {15--20},
  publisher    = {WSEAS Press},
  title        = {Monolithic integration of the synchronous rectifier in isolated forward DC-DC converters},
  year         = {2012},
}