A high-performance current sensing circuit with full-phase sampling capability

Author

Ze-kun Zhou ; Haiwu Xie ; Yue Shi ; Chuankui Wu ; Jiangang Huang ; Xin Ming ; Bo Zhang

Author_Institution

State key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2013

fDate

28-31 Oct. 2013

Firstpage

1

Lastpage

4

Abstract

A high-performance current sensing circuit with full-phase sampling capability is presented in this paper, which is suitable for DC-DC converters, motor driver circuits, and other control systems requiring current sensing. The proposed structure comprises of three parts, which are level shift, phase identification, and signal rectification. No matter what the phase of the current is, the current sensing circuit in this paper can accurately obtain the current information. Based on a standard 0.35um BCD process, the proposed current sensing circuit has been validated at different temperature points and process corners. The results demonstrate that the circuit can sense full-phase currents within ±1.5% accuracy.

Keywords

DC-DC power convertors; current-mode circuits; driver circuits; electric current measurement; rectifying circuits; BCD process; DC-DC converters; control systems; full-phase sampling capability; high-performance current sensing circuit; level shift; motor driver circuits; phase identification; signal rectification; size 0.35 mum; Digital audio players; Integrated circuit modeling; Rectifiers; Resistors; Switched-mode power supply; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC (ASICON), 2013 IEEE 10th International Conference on

Conference_Location

Shenzhen

ISSN

2162-7541

Print_ISBN

978-1-4673-6415-7

Type

conf

DOI

10.1109/ASICON.2013.6812050

Filename

6812050