JSTS:Journal of Semiconductor Technology and Science

  • 제14권3호
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  • Pages.300-312
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  • 2014
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  • 1598-1657(pISSN)
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  • 2233-4866(eISSN)
대한전자공학회 (The Institute of Electronics and Information Engineers)
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Load-Balance-Independent High Efficiency Single-Inductor Multiple-Output (SIMO) DC-DC Converters

  • 투고 : 2013.11.25
  • 심사 : 2014.04.05
  • 발행 : 2014.06.30
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초록

A single-inductor multiple-output (SIMO) DC-DC converter providing buck and boost outputs with a new switching sequence is presented. In the proposed switching sequence, which does not require any additional blocks, input energy is delivered to outputs continuously by flowing current through the inductor, which leads to high conversion efficiency regardless of the balance between the buck and boost output loads. Furthermore, instead of multiple output loop compensation, only the freewheeling current feedback loop is compensated, which minimizes the number of off-chip components and nullifies the need for the equivalent series resistance (ESR) of the output capacitor for loop compensation. Therefore, power conversion efficiency and output voltage ripples can be improved and minimized, respectively. Implemented in a 0.35-${\mu}m$ CMOS, the proposed SIMO DC-DC converter achieves high conversion efficiency regardless of the load balance between the two outputs with maximum efficiency reaching up to 82% under heavy loads.

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참고문헌

  1. D.Ma,W.-H. Ki, C.-Y. Tsui, and P. K. T.Mok, "Single-inductor multiple-output switching converters with time-multiplexing control in discontinuous conduction mode," IEEE J. Solid- State Circuits, vol. 38, no. 1, pp. 89-100, Jan. 2003. https://doi.org/10.1109/JSSC.2002.806279
  2. D.Ma,W.-H. Ki, and C.-Y. Tsui, "A pseudo- CCM/DCM SIMO switching converter with freewheel switching," IEEE J. Solid-State Circuits, vol. 38, no. 6, pp. 1007-1014, Jun. 2003. https://doi.org/10.1109/JSSC.2003.811976
  3. H.-P. Le, C.-S. Chae, K.-C. Lee, S.-W. Wang, G.-H. Cho, and G.-H. Cho, "A single-inductor switching DC-DC converter with five outputs and ordered power-distributive control," IEEE J. Solid-State Circuits, vol. 42, no. 12, pp. 2706-2714, Dec. 2007. https://doi.org/10.1109/JSSC.2007.908767
  4. Y.-J. Woo, H.-P. Le, G.-H. Cho, G.-H. Cho, and S.- I. Kim, "Load independent control of switching DC-DC converters with freewheeling current feedback," IEEE J. Solid-State Circuits, vol. 43, no. 12, pp. 2798-2808, Dec. 2008. https://doi.org/10.1109/JSSC.2008.2005709
  5. C.-S. Chae, H.-P. Le, K.-C. Lee, G.-H. Cho, and G.-H. Cho, "A single-inductor step-up DC-DC switching converter with bipolar outputs for active matrix OLED mobile display panels," IEEE J. Solid-State Circuits, vol. 44, no. 2, pp. 509-524, Feb. 2009. https://doi.org/10.1109/JSSC.2008.2010986
  6. M. Huang and K. Chen, "Single-inductor multioutput (SIMO) DC-DC converters with high lightload efficiency and minimized cross-regulation for portable devices," IEEE J. Solid-State Circuits, vol. 44, no. 4, pp. 1099-1111, Apr. 2009. https://doi.org/10.1109/JSSC.2009.2014726

피인용 문헌

  1. Single Inductor-Multiple Output DPWM DC-DC Boost Converter with a High Efficiency and Small Area vol.11, pp.4, 2018, https://doi.org/10.3390/en11040725