A dual-phase charge pump regulator with nano-ampere switched-capacitor CMOS voltage reference for achieving low output ripples

Author

Luo, Yean-Kuo ; Chen, Ke-Horng ; Hsu, Wei-Chou

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan

fYear

2008

fDate

Aug. 31 2008-Sept. 3 2008

Firstpage

446

Lastpage

449

Abstract

In this paper, a regulated dual phase charge pump with switched-capacitor voltage reference is presented. This charge pump uses a dual phase technique to reduce the output ripple and combines the switch-capacitor CMOS voltage reference to diminish the chip area and quiescent current. This charge pump provides output voltage 5 V and maximum load current 5 mA with the constant frequency regulation. This design is based on TSMC 0.6 mum 5 V/12 V CMOS technology. The output ripples are reduced from 6.1 mV to 3.7 mV. Besides, the power consumption is minimized because of the integration of the nano-ampere CMOS reference voltage.

Keywords

CMOS integrated circuits; DC-DC power convertors; charge pump circuits; switched capacitor networks; DC-DC power converter; bandgap reference; current 5 mA; dual-phase charge pump regulator; low output ripples; nano-ampere switched-capacitor CMOS voltage reference; voltage 5 V; Batteries; Bipolar transistors; CMOS technology; Charge pumps; Frequency control; MOSFETs; Photonic band gap; Regulators; Switching circuits; Voltage; Charge pump; DC-DC power converter; bandgap reference; constant frequency regulation; dual phase; switched-capacitor circuit;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on

Conference_Location

St. Julien´s

Print_ISBN

978-1-4244-2181-7

Electronic_ISBN

978-1-4244-2182-4

Type

conf

DOI

10.1109/ICECS.2008.4674886

Filename

4674886