Parasitic-Aware Design of Integrated DC-DC Converters With Spiral Inductors. Li, S., Smaili, S., & Massoud, Y. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 23(12):3076–3084, December, 2015.
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Integrated dc-dc converters are widely used for the realization of power converters suitable for energy harvesting and computing systems. In such systems, integrated converters are the ideal candidate due to their small size and low power consumption. Integrated dc-dc converters typically use spiral inductors to achieve high levels of integration and performance. However, under scenarios where energy scarcity is paramount, the integrated converter with spiral inductor requires careful modeling and optimization to achieve maximum efficiency. In this paper, we provide a parasitic aware design technique that takes into account the spiral inductor resistance as well as the switching parasitics, while utilizing numerical methods, to arrive at converter designs with robust performance and optimal efficiency. We translate the various system constraints into design rules and use them to formulate the various design parameters, from switching frequency to duty cycle, in terms of the inductance. We study how these parameters are dependent on each other, giving rise to multiple tradeoffs. We also present a method for minimizing power losses using optimization techniques, which leverage our formulation of the system parameters in terms of inductance.
@Article{         Li_2015ab,
  abstract      = {Integrated dc-dc converters are widely used for the realization of power converters suitable for energy harvesting and computing systems. In such systems, integrated converters are the ideal candidate due to their small size and low power consumption. Integrated dc-dc converters typically use spiral inductors to achieve high levels of integration and performance. However, under scenarios where energy scarcity is paramount, the integrated converter with spiral inductor requires careful modeling and optimization to achieve maximum efficiency. In this paper, we provide a parasitic aware design technique that takes into account the spiral inductor resistance as well as the switching parasitics, while utilizing numerical methods, to arrive at converter designs with robust performance and optimal efficiency. We translate the various system constraints into design rules and use them to formulate the various design parameters, from switching frequency to duty cycle, in terms of the inductance. We study how these parameters are dependent on each other, giving rise to multiple tradeoffs. We also present a method for minimizing power losses using optimization techniques, which leverage our formulation of the system parameters in terms of inductance.},
  author        = {Li, Shuang and Smaili, Sami and Massoud, Yehia},
  doi           = {10.1109/TVLSI.2014.2387278},
  file          = {Li_2015ab.pdf},
  group         = {pels},
  issn          = {1063-8210},
  journal       = {IEEE Transactions on Very Large Scale Integration (VLSI) Systems},
  keywords      = {DC-DC power convertors,inductors,optimisation,computing systems,converter designs,energy harvesting,energy scarcity,inductance,integrated DC-DC converters,numerical methods,optimization techniques,parasitic aware design technique,parasitic-aware design,power converters,power losses,spiral inductor,spiral inductor resistance,spiral inductors,switching parasitics,system parameters,Inductance,Inductors,Logic gates,MOSFET,Optimization,Resistance,Spirals,Design optimization,integrated power converters,integrated power converters.},
  month         = dec,
  number        = {12},
  pages         = {3076--3084},
  title         = {Parasitic-Aware Design of Integrated {DC}-{DC} Converters With Spiral Inductors},
  volume        = {23},
  year          = {2015},
  shortjournal  = {IEEE Trans. Very Large Scale Integr. (VLSI) Syst.}
}

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