A programmable high efficiency charge pump system for embedded flash memory with improved current driving capability

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Microelectronics Journal Pub Date : 2025-03-12 DOI:10.1016/j.mejo.2025.106626

Tao Xu, Yuqiao Xie, Guoji Qiu, Zhiyuan Hu, Zhengxuan Zhang, Dawei Bi

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引用次数: 0

Abstract

Flash memory, a key element in embedded systems, necessitates high voltage for its operation, which is usually provided by charge pumps. This paper presents a programmable high efficiency charge pump system in 40 nm bulk CMOS technology powered from a 1.1 V supply. The proposed system integrates low-voltage MOS self-adaptive body-biased cross-coupled charge pumps and a high-voltage MOS self-adaptive body-biased cross-coupled charge pump with a doubler structure. The system adaptively activates the appropriate charge pump combination based on the current load, working in conjunction with a novel clock coupled voltage modulation circuit to achieve reduced power consumption and improved efficiency. The programmable high efficiency charge pump system can stabilize an output voltage of 6V at

292 μ A

and 8V at

235 μ A

under a 50 MHz clock. It achieves a peak efficiency of 64.04% at

292 μ A

current load and occupies 0.145 mm

^{2}

in area.

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来源期刊

Microelectronics Journal 工程技术-工程：电子与电气

CiteScore

4.00

自引率

27.30%

发文量

222

审稿时长

43 days

期刊介绍： Published since 1969, the Microelectronics Journal is an international forum for the dissemination of research and applications of microelectronic systems, circuits, and emerging technologies. Papers published in the Microelectronics Journal have undergone peer review to ensure originality, relevance, and timeliness. The journal thus provides a worldwide, regular, and comprehensive update on microelectronic circuits and systems. The Microelectronics Journal invites papers describing significant research and applications in all of the areas listed below. Comprehensive review/survey papers covering recent developments will also be considered. The Microelectronics Journal covers circuits and systems. This topic includes but is not limited to: Analog, digital, mixed, and RF circuits and related design methodologies; Logic, architectural, and system level synthesis; Testing, design for testability, built-in self-test; Area, power, and thermal analysis and design; Mixed-domain simulation and design; Embedded systems; Non-von Neumann computing and related technologies and circuits; Design and test of high complexity systems integration; SoC, NoC, SIP, and NIP design and test; 3-D integration design and analysis; Emerging device technologies and circuits, such as FinFETs, SETs, spintronics, SFQ, MTJ, etc. Application aspects such as signal and image processing including circuits for cryptography, sensors, and actuators including sensor networks, reliability and quality issues, and economic models are also welcome.