[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.4313/TEEM.2014.15.3.139

High Performance Charge Pump Converter with Integrated CMOS Feedback Circuit

Jeong, Hye-Im (School of Electrical and Computer Engineering, Chungbuk National University)
Park, Jung-Woong (School of Electrical and Computer Engineering, Chungbuk National University)
Choi, Ho-Yong (School of Electrical and Computer Engineering, Chungbuk National University)
Kim, Nam-Soo (School of Electrical and Computer Engineering, Chungbuk National University)

Publication Information

Transactions on Electrical and Electronic Materials / v.15, no.3, 2014 , pp. 139-143 More about this Journal

Abstract

In this paper, an integrated low-voltage control circuit is introduced for a charge pump DC-DC boost converter. By exploiting the advantage of the integration of the feedback control circuit within CMOS technology, the charge pump boost converter offers a low-current operation with small ripple voltage. The error amplifier, comparator, and oscillator in the control circuit are designed with the supply voltage of 3.3 V and the operating frequency of 1.6~5.5 MHz. The charge pump converter with the 4 or 8 pump stages is measured in simulation. The test in the $0.35{\mu}m$ CMOS process shows that the load current and ripple ratio are controlled under 1 mA and 2% respectively. The output-voltage is obtained from 4.8 ~ 8.5 V with the supply voltage of 3.3 V.

Keywords

Control circuit; Charge pump; CMOS; Boost converter; Ripple;

Citations & Related Records

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