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A Wide Input Range Buck-Boost DC–DC Converter Using Hysteresis Triple-Mode Control Technique with Peak Efficiency of 94.8% for RF Energy Harvesting Applications

Author

Listed:
  • Truong Thi Kim Nga

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Seong-Mun Park

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Young-Jun Park

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Sang-Hyuk Park

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • SangYun Kim

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Truong Van Cong Thuong

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Minjae Lee

    (School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea)

  • Keum Cheol Hwang

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Youngoo Yang

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

  • Kang-Yoon Lee

    (College of Information and Communication Engineering, Sungkyunkwan University, Seoul 16419, Korea)

Abstract

This paper presents a wide range buck-boost direct current to direct current (DC–DC) converter for wireless power transfer (WPT) systems. To implement the wide range DC–DC converter, a Hysteresis triple-mode selector is proposed and designed to effectively adjust the DC–DC converter to operate in one of the three modes: buck, boost or buck-boost, according to the input voltage level. Hysteresis control technique eliminates the unstable state at the mode transition. An output soft start-up circuit is proposed to reduce the inrush current in the switch transistor. A min-max duty generator is introduced to improve the accuracy of DC–DC converter. When the output voltage is too low or too high in comparison to the desired value. The min-max duty generator can control the DC component of the error signal to eliminate the unwanted dead state of the pulse width modulation signal. In addition, only one external inductor is shared between two power stages, thus minimizing the system cost by reducing the external components. The proposed buck-boost DC–DC converter is implemented using 180 nm Complementary Metal-Oxide-Semiconductor (CMOS) technology. The output voltage is regulated to 5 V when the input voltage ranges 3–8 V, and output load current ranges 100–500 mA. The die area is 1.55 mm × 1.14 mm (1.767 mm 2 ). The measured peak efficiency of the buck-boost DC–DC converter is 94.8%.

Suggested Citation

  • Truong Thi Kim Nga & Seong-Mun Park & Young-Jun Park & Sang-Hyuk Park & SangYun Kim & Truong Van Cong Thuong & Minjae Lee & Keum Cheol Hwang & Youngoo Yang & Kang-Yoon Lee, 2018. "A Wide Input Range Buck-Boost DC–DC Converter Using Hysteresis Triple-Mode Control Technique with Peak Efficiency of 94.8% for RF Energy Harvesting Applications," Energies, MDPI, vol. 11(7), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1618-:d:153555
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    Citations

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    Cited by:

    1. Hassan Saif & Yongmin Lee & Hyeonji Lee & Minsun Kim & Muhammad Bilawal Khan & Jung-Hoon Chun & Yoonmyung Lee, 2018. "A Wide Load Current and Voltage Range Switched Capacitor DC–DC Converter with Load Dependent Configurability for Dynamic Voltage Implementation in Miniature Sensors," Energies, MDPI, vol. 11(11), pages 1-21, November.
    2. Myeong Woo Kim & Jae Joon Kim, 2021. "A PWM/PFM Dual-Mode DC-DC Buck Converter with Load-Dependent Efficiency-Controllable Scheme for Multi-Purpose IoT Applications," Energies, MDPI, vol. 14(4), pages 1-14, February.
    3. Pablo Zumel & Cristina Fernández & Marlon A. Granda & Antonio Lázaro & Andrés Barrado, 2018. "Computer-Aided Design of Digital Compensators for DC/DC Power Converters," Energies, MDPI, vol. 11(12), pages 1-21, November.

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