A novel current sensing circuit for a current-mode control CMOS DC-DC buck converter

@article{Chang2005ANC,
  title={A novel current sensing circuit for a current-mode control CMOS DC-DC buck converter},
  author={Cheng-Hui Chang and R. C. Chang},
  journal={2005 IEEE VLSI-TSA International Symposium on VLSI Design, Automation and Test, 2005. (VLSI-TSA-DAT).},
  year={2005},
  pages={120-123}
}
A novel on-chip current-sensing technique, which is suitable for a current-mode control CMOS DC-DC buck converter, is presented in this paper. The proposed current sensing circuit doesn't need an op amp as a voltage mirror, and thus fewer transistors are need and lower power consumption is achieved. We use the TSMC 0.35/spl mu/m 2P4M CMOS process to design and simulate the converter circuits. Simulation results show that accuracy of current-sensing for the proposed circuit is 98.2% and the core… CONTINUE READING
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