One flyback off line AC/DC switching power supply design

Author

Pengcheng Xu ; Zhigang Han

Author_Institution

Dept. of Electron. Sci. & Technol., Tongji Univ., Shanghai, China

fYear

2014

fDate

9-11 June 2014

Firstpage

1276

Lastpage

1280

Abstract

AC/DC switching power supply is widely used in various types of electronic equipment. In order to reduce the production cost and integrates multi-protection, a design based on off line flyback converter and 0.5μm CMOS process used in this paper. The chip works on constant current state achieved by pulse frequency modulation and constant voltage mode achieved by a unique off-time modulation method. It is also integrates multi-protection functions circuit to avoid the chip working extreme conditions. At last, each module circuit has been simulated by using EDA tools Spectre to meet the design specification.

Keywords

AC-DC power convertors; CMOS integrated circuits; constant current sources; overcurrent protection; overvoltage protection; pulse frequency modulation; switched mode power supplies; AC-DC switching power supply; CMOS process; EDA tools Spectre; constant current state; constant voltage mode; module circuit; multiprotection functions circuit; off line flyback converter; off-time modulation method; production cost; pulse frequency modulation; size 0.5 mum; Blanking; Hysteresis; Power supplies; Simulation; Switches; Topology; Voltage control; AC/DC; fly-back converter; low-cost; multi-protection;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-4799-4316-6

Type

conf

DOI

10.1109/ICIEA.2014.6931364

Filename

6931364