CMOS Charge Pump With No Reversion Loss and Enhanced Drivability

A CMOS charge pump adopting dual charge transfer switches and a transfer blocking technique is presented. Using these techniques, the proposed charge pump eliminates reversion loss and improves driving capability. A test chip is designed in a 46-nm CMOS process, whose evaluation results show that, with no loading current, the proposed CMOS charge pump achieves 9.1% improvement of voltage conversion ratio. They also show that the proposed charge pump provides up to 132% improvement on current driving capability, as compared with the conventional CMOS charge pumps.

[1]  D. Pappalardo,et al.  Charge Pump Circuits: An Overview on Design Strategies and Topologies , 2010, IEEE Circuits and Systems Magazine.

[2]  P.K.T. Mok,et al.  Switching noise and shoot-through current reduction techniques for switched-capacitor voltage doubler , 2005, IEEE Journal of Solid-State Circuits.

[3]  Kyeong-Sik Min,et al.  Efficient and Large-Current-Output Boosted Voltage Generators with Non-Overlapping-Clock-Driven Auxiliary Pumps for Sub-1-V Memory Applications , 2004 .

[4]  J. F. Dickson,et al.  On-chip high-voltage generation in MNOS integrated circuits using an improved voltage multiplier technique , 1976 .

[5]  Michel Declercq,et al.  A high-efficiency CMOS voltage doubler , 1998, IEEE J. Solid State Circuits.

[6]  Guido Torelli,et al.  Impact of Control Signal Non-Idealties on Two-Phase Charge Pumps , 2007, 2007 IEEE International Symposium on Circuits and Systems.

[7]  Eiji Takeda,et al.  An experimental 1.5-V 64-Mb DRAM , 1991 .

[8]  Soo-Won Kim,et al.  An Energy Efficient $V_{\rm PP}$ Generator With Fast Ramp-Up Time for Mobile DRAM , 2011, IEEE Journal of Solid-State Circuits.

[9]  Jieh-Tsorng Wu,et al.  MOS charge pumps for low-voltage operation , 1998, IEEE J. Solid State Circuits.

[10]  Tughrul Arslan,et al.  An evaluation of 2-phase charge pump topologies with charge transfer switches for green mobile technology , 2011, 2011 IEEE International Symposium on Industrial Electronics.

[11]  Chi-Ying Tsui,et al.  High efficiency cross-coupled doubler with no reversion loss , 2006, 2006 IEEE International Symposium on Circuits and Systems.

[12]  Hong-June Park,et al.  Two-phase boosted voltage generator for low-voltage DRAMs , 2003 .

[13]  G. Palumbo,et al.  Double and triple charge pump for power IC: dynamic models which take parasitic effects into account , 1993 .

[14]  Young-Hyun Jun,et al.  CMOS Charge Pump With Transfer Blocking Technique for No Reversion Loss and Relaxed Clock Timing Restriction , 2009, IEEE Trans. Circuits Syst. II Express Briefs.