A novel on-chip CMOS current sensor implemented by switched capacitors for a current-mode control DC-DC buck converter

Author

Zhang, Yong ; Lu, Wengao ; Guo, Juan ; Zhang, Yajing ; Chen, Zhongjian ; Zhang, Yacong ; Ji, Lijiu

Author_Institution

Inst. of Microelectron., Peking Univ., Beijing, China

fYear

2011

fDate

17-18 Nov. 2011

Firstpage

1

Lastpage

2

Abstract

A novel on-chip CMOS current sensor implemented by switched capacitors for a current - mode buck converter is presented in this paper. This proposed current sensing circuit does not need another sense MOSFET and a voltage-to-current and current-to-voltage transform circuit. We use the 0.35um DPTM CMOS process to design and simulate this circuit. Test result shows that the accuracy and the speed of the proposed current sensing circuit are high.

Keywords

CMOS integrated circuits; DC-DC power convertors; MOSFET; electric sensing devices; switched capacitor networks; DPTM CMOS process; MOSFET; current sensing circuit; current-mode buck converter; current-mode control DC-DC buck converter; current-to-voltage transform circuit; on-chip CMOS current sensor; size 0.35 mum; switched capacitor; voltage-to-current transform circuit; Accuracy; CMOS integrated circuits; Capacitors; Power MOSFET; Resistors; Sensors; DC-DC; current mode; current sensing circuit; switched capacitors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of

Conference_Location

Tianjin

ISSN

Pending

Print_ISBN

978-1-4577-1998-1

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/EDSSC.2011.6117618

Filename

6117618