High-Performance Charge Pump Regulator with Integrated CMOS Voltage Sensing Control Circuit

Chan-Soo Lee, Ayodeji Matthew Monebi, Dansran Bayarsaikhan, Songyuan Xu, Bierng-Chearl Ahn () and In-Sung Lee ()
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Chan-Soo Lee: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea
Ayodeji Matthew Monebi: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea
Dansran Bayarsaikhan: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea
Songyuan Xu: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea
Bierng-Chearl Ahn: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea
In-Sung Lee: School of Electrical and Computer Engineering, Chungbuk National University, Cheongju 28644, Republic of Korea

Energies, 2023, vol. 16, issue 12, 1-12

Abstract: This paper introduces a design for a charge pump DC-DC boost regulator with an integrated low-voltage control circuit. With a charge pump and feedback circuits implemented in 0.35 µm CMOS technology, the proposed DC-DC boost regulator offers an efficient device solution for low-power applications. The proposed design employs an error amplifier, oscillator, and comparator in the control circuit which is designed with a supply voltage of 1.8–3.5 V and 2 MHz frequency. Stability is obtained via a pole-zero compensation in the feedback circuit. The charge pump regulator with four pump stages and the whole regulator circuit are analyzed using the Cadence simulation tool. Measurements of the fabricated 0.35 µm CMOS regulator show that the transient time of the error amplifier is controlled within 1.0 µsec and the output voltage is accurately controlled from 7.8 V to 9.4 V with 27–38 mV ripple and 4.5 mA maximum current.

Keywords: charge pump; CMOS; integration; voltage control circuit (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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