IEIE Transactions on Smart Processing and Computing

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지
DOI QR코드

DOI QR Code

High Efficiency Buck-Converter with Short Circuit Protection

  • Cho, Han-Hee (Department of Electronics and Electrical Engineering, Dankook University) ;
  • Park, Kyeong-Hyeon (Department of Electronics and Electrical Engineering, Dankook University) ;
  • Cho, Sang-Woon (Department of Electronics and Electrical Engineering, Dankook University) ;
  • Koo, Yong-Seo (Department of Electronics and Electrical Engineering, Dankook University)
  • Received : 2014.02.20
  • Accepted : 2014.08.28
  • Published : 2014.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes a DC-DC Buck-Converter with DT-CMOS (Dynamic Threshold-voltage MOSFET) Switch. The proposed circuit was evaluated and compared with a CMOS switch by both the circuit and device simulations. The DT-CMOS switch reduced the output ripple and the conduction loss through a low on-resistance. Overall, the proposed circuit showed excellent performance efficiency compared to the converter with conventional CMOS switch. The proposed circuit has switching frequency of 1.2MHz, 3.3V input voltage, 2.5V output voltage, and maximum current of 100mA. In addition, this paper proposes a SCP (Short Circuit Protection) circuit to ensure reliability.

Keywords

References

  1. Ming-Xiang Lu, "sub-1V voltage-mode DC-DC buck converter using PWM control technique", IEEE, pp1-4, 2010
  2. Fariborz Assaderaghi, "A dynamic Threshold Voltage MOSFET for Ultra Low Voltage Operation", IEEE, 33.1.1p.
  3. Smith, T.A., "Using the on-resistance of a power MOSFET to control a DC-DC converter", IEEE, pp.731-733, 1998
  4. R. Jacob Baker, "CMOS Circuit Design and Layout second edition," Wiley-inter science, pp. 613-900
  5. Lu Chen, "Design and Test of a Synchronous PWM switching Regulator System", IEEE 0-7803-6253-5(2000)
  6. A. Djemouai, "New CMOS Integrated Pulse Width Modulator for Voltage Conversion Applications", IEEE 0-7803-6542-9(2000)
  7. K. Mark Smith, Jr., "A Comparison of Voltage-Mode Soft-Switching Methods for PWM Converters", IEEE Trans-Power Electronic, Vol. 12,No.2(1997)