Design of a under voltage lock out circuit with bandgap structure

Author

Fuhua, Li ; Wei, Wang ; Qiuping, Hang ; Weiguo, Xie ; Zhenghao, Lu

Author_Institution

Dept. of Microelectron., Soochow Univ., Suzhou, China

fYear

2009

fDate

14-16 Dec. 2009

Firstpage

224

Lastpage

227

Abstract

According to the necessary function of under voltage lock out (UVLO) in DC-DC power management systems, an improved UVLO circuit is proposed. The circuit realizes stabilization of parameters such as threshold point voltage, hysteretic range of the comparator etc. without utilizing an extra bandgap reference voltage source for comparison. The UVLO circuit is implemented in CSMC 0.5Â¿m BCD process. Hspice simulation results show that the UVLO circuit presents advantages such as simple topology, sensitive response, low temperature draft, low power consumption.

Keywords

SPICE; energy gap; integrated circuit design; power consumption; DC-DC power management systems; Hspice simulation; bandgap reference voltage source; bandgap structure; comparator; low power consumption; low temperature draft; size 0.5 mum; threshold point voltage; under voltage lock out circuit; Capacitors; Circuit topology; Energy consumption; Energy management; Hysteresis; Logic; Photonic band gap; Power supplies; Power system management; Threshold voltage; BCD process; Hysteretic range; Low Power; Power management; Under Voltage Lock Out;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits, ISIC '09. Proceedings of the 2009 12th International Symposium on

Conference_Location

Singapore

Print_ISBN

978-9-8108-2468-6

Type

conf

Filename

5403714