Monolithic HCC buck and boost converters with simplified convergence analysis methods

The monolithic hysteresis-current-controlled (HCC) buck and boost converters with simplified convergence analysis methods are presented. The architectures of both converters are very simple and only consist of few components. The convergence condition, which is independent to duty cycle of converters, is derived in this paper. Using this concept to synthesize current-mode converters, the component values of converters will be designed easily. There is no sub-harmonic oscillation in the proposed converters without slope compensation even if the duty cycle greater than 50%. The proposed circuits are implemented into a single chip with TSMC 0.35 μm CMOS DPQM processes and their chip area is only 2.25 mm2, respectively. The maximum power efficiency of proposed converters is measured and described in this paper, too.

[1]  J. F. Duque-Carrillo,et al.  An improved current source for low voltage applications , 1996, Proceedings of Custom Integrated Circuits Conference.

[2]  C. K. Michael Tse,et al.  Bifurcation behaviour in parallel‐connected boost converters , 2001, Int. J. Circuit Theory Appl..

[3]  Fred C. Lee,et al.  Improved light-load efficiency for synchronous rectifier voltage regulator module , 2000 .

[4]  Chi K. Tse,et al.  Fast-scale bifurcation in power-factor-correction buck-boost converters and effects of incompatible periodicities: Research Articles , 2006 .

[5]  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.

[6]  R.C. Chang,et al.  A novel current sensing circuit for a current-mode control CMOS DC-DC buck converter , 2005, 2005 IEEE VLSI-TSA International Symposium on VLSI Design, Automation and Test, 2005. (VLSI-TSA-DAT)..

[7]  J. F. Duque-Carrillo,et al.  Am improved tail current source for low voltage applications , 1997 .

[8]  Cecil Deisch,et al.  Simple switching control method changes power converter into a current source , 1978, 1978 IEEE Power Electronics Specialists Conference.

[9]  Sima Dimitrijev,et al.  Controlling a DC-DC converter by using the power MOSFET as a voltage controlled resistor , 2000 .

[10]  Chern-Lin Chen,et al.  Analysis and implementation of a delay-compensated deadbeat current controller for solar inverters , 2001 .

[11]  Pallab Midya,et al.  Sensorless current mode control-an observer-based technique for DC-DC converters , 1997 .

[12]  Chwan-Lu Tseng,et al.  On-chip current sensing techniques for hysteresis current controlled DC-DC converters , 2005 .

[13]  D. Maksimovic,et al.  Online calibration of MOSFET on-state resistance for precise current sensing , 2004, IEEE Power Electronics Letters.

[14]  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).

[15]  Juing-Huei Su,et al.  Integrated current sensing circuit suitable for step-down dc-dc converters , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[16]  Henry Shu-Hung Chung,et al.  Use of state trajectory prediction in hysteresis control for achieving fast transient response of the buck converter , 2003, Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03..

[17]  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..

[18]  Jinup Lim,et al.  A high efficiency CMOS DC-DC boost converter with current sensing feedback , 2005, 48th Midwest Symposium on Circuits and Systems, 2005..

[19]  C. K. Michael Tse,et al.  Application of duality principle to synthesis of single-stage power-factor-correction voltage regulators , 2003, Int. J. Circuit Theory Appl..

[20]  R.D. Middlebrook,et al.  Modelling and analysis of switching DC-to-DC converters in constant-frequency current-programmed mode , 1979, 1979 IEEE Power Electronics Specialists Conference.

[21]  C. K. Michael Tse,et al.  Fast‐scale bifurcation in power‐factor‐correction buck‐boost converters and effects of incompatible periodicities , 2006, Int. J. Circuit Theory Appl..

[22]  Shen-Iuan Liu,et al.  A Dual-Phase Digital PWM Controller for DC-DC Switching Converters with Current Balancing , 2005, 2005 IEEE Asian Solid-State Circuits Conference.