Title :
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
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;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2014 IEEE 9th Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-4316-6
DOI :
10.1109/ICIEA.2014.6931364
