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Design of DC-DC Boost Converter in CMOS 0.18µm Technology

M.RAMA DEVI, R.SUNIL KUMAR, M.MADHAVA KUMAR, ,
Affiliations
Gayatri Vidya Parishad College of Engineering for Women, Visakhapatnam, Andhra Pradesh, India.
:10.22362/ijcert/2016/v3/i10/48905


Abstract
A CMOS DC-DC boost converter with fastest settling time and less quiescent current with a feedback control is implemented. An extra path is introduced because of an error amplifier (OTA) which has an effective control for fast response. Efficient compensation with soft-start is used to make the quiescent current low. An on-chip current sensing circuit is introduced with less number of I/O pins for current mode control. In this project, the DC-DC boost converter is designed in Cadence virtuoso 0.18µm technology with a 5V supply. With a wide range of loads, it provides 25V at the output, 50mA load current with 90% efficiency. The circuit is operated at 500 KHz clock frequency with output ripple voltage of 20mV by using 4.7µF off-chip capacitor and 75µH off-chip inductor.


Citation
M.Rama Devi et al. ," Design of DC-DC Boost Converter in CMOS 0.18µm Technology”, International Journal of Computer Engineering In Research Trends, 3(10):554-560,October-2016.


Keywords : DC-DC Boost converter, operational Tran’s conductance amplifier (OTA), comparator, pulse width generator, compensator, current sensing circuit, oscillator and ramp generator circuit

References
[1]	Ned Mohan, Tore M. Undeland, William P. Robbins, “Power Electronics: Converters, Applications, and Design”, 3rd Edition, Wiley.
[2]	Robert W Erickson, Fundamentals of Power Electronics, International Thomson Publishing (1997)
[3]	C. F. Lee and P. K. T. Mok, “A monolithic current-mode CMOS DC-DC converter with on-chip current-sensing technique,” IEEE J. Solid-state Circuits, vol. 39, no. 1, pp. 3–14, Jan. 2004.
[4]	Yushan Li, Kevin R. Vannorsdel, Art J. Zirger, Mark Norris, and DraganMaksimovi´c, “Current Mode Control for Boost Converters with Constant Power Loads,” in IEEE Transactions on Circuits and Systems-I: Regular Papers, vol. 59, no. 1, pp. 198-206, January 2012.
[5]	Weiwei Huang,Xiao Yang,Chaodong Ling,”Novel current sensing circuit for boost DC-DC converter”
[6]	Kalpesh B. Pandya, Kehul A. shah “Performance Evaluation of Different Types of CMOS Operational Transconductance Amplifier” International Journal of Science and Research (IJSR), India Online ISSN: 2319-7064.
[7]	HyunseokNam,InseokKim,YoungkookAhn,andJeongjinRoh,”A High efficiency Boost converter for TFT-LCD bias supply”, THE 23rd  international Technical conference on circuits/systems, computers and communications (ITC-CSCC 2008).


DOI Link : http://www.dx.doi.org/10.22362/ijcert/2016/v3/i10/48905

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