Design considerations of recent advanced monolitic current-mode DC-DC converters

CMOS monolithic current-mode DC-DC converters have been widely used as a core part of integrated power management circuits. The design of the current sensors and efficiency enhance structures are challenging and have kept evolving with the advanced technology. A review of the state-of-the-art current sensor designs and efficiency enhancement structure will be discussed in the paper.

[1]  P.K.T. Mok,et al.  A monolithic current-mode CMOS DC-DC converter with on-chip current-sensing technique , 2004, IEEE Journal of Solid-State Circuits.

[2]  Hoi Lee,et al.  An Integrated Speed- and Accuracy-Enhanced CMOS Current Sensor With Dynamically Biased Shunt Feedback for Current-Mode Buck Regulators , 2010, IEEE Transactions on Circuits and Systems I: Regular Papers.

[3]  Wing-Hung Ki,et al.  Loop gain analysis and development of high-speed high-accuracy current sensors for switching converters , 2004, 2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512).

[4]  Ke-Horng Chen,et al.  Fast mode-switching technique in hrbrid-mode operation , 2008, 2008 51st Midwest Symposium on Circuits and Systems.

[5]  P.L. Chapman,et al.  Improvement of light-load efficiency using width-switching scheme for CMOS transistors , 2005, IEEE Power Electronics Letters.

[6]  Enrico Dallago,et al.  Lossless current sensing in low-voltage high-current DC/DC modular supplies , 2000, IEEE Trans. Ind. Electron..

[7]  Gun-Woo Moon,et al.  Wide range ZVS phase shift full bridge converter with low conduction loss , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[8]  Tsz Yin Man,et al.  An Auto-Selectable-Frequency Pulse-Width Modulator for Buck Converters with Improved Light-Load Efficiency , 2008, 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[9]  P.K.T. Mok,et al.  A 1-V integrated current-mode boost converter in standard 3.3/5-V CMOS technologies , 2005, IEEE Journal of Solid-State Circuits.

[10]  Dylan Dah-Chuan Lu,et al.  Application of Valley-Current-Mode Control in High Step-up Converters , 2011, ICPE 2011.

[11]  Thomas H. Lee,et al.  A 3MHz Low-Voltage Buck Converter with Improved Light Load Efficiency , 2007, 2007 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[12]  P. Midya,et al.  Sensorless current mode control-an observer-based technique for DC-DC converters , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[13]  G.A. Rincon-Mora,et al.  Current-sensing techniques for DC-DC converters , 2002, The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002..

[14]  O. Trescases.  A Digitally Controlled DC-DC Converter Module with a Segmented Output Stage for Optimized Efficiency , 2007, Proceedings of the International Symposium on Power Semiconductor Devices & ICs.

[15]  Philip K. T. Mok,et al.  On-chip current sensing technique for CMOS monolithic switch-mode power converters , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).