CAJ | 학술논문

针对现代系统芯片中处理器核等数字模块和模拟模块对于不同电平电源供电的需要,提出一种基于复用技术的新型双通路电荷泵实现方案.该电荷泵能同时提供具有驱动能力的升压和降压模式电压输出,且可实现可变增益组合,以便根据检测到的输入电压自动调整增益组合以提高工作效率.开关阵列和电容的复用降低了芯片和应用电路的成本.文章给出了电荷泵的拓扑结构和用于量化分析的大信号解析公式和小信号模型.电路在TSMC的0.35μm混合信号CMOS工艺下设计完成.仿真验证和流片测试的结果表明所提出的设计目标均已实现,所获结果与解析公式的计算高度一致,证明了模型以及分析方法的正确性.
침대현대계통심편중처리기핵등수자모괴화모의모괴대우불동전평전원공전적수요,제출일충기우복용기술적신형쌍통로전하빙실현방안.해전하빙능동시제공구유구동능력적승압화강압모식전압수출,차가실현가변증익조합,이편근거검측도적수입전압자동조정증익조합이제고공작효솔.개관진렬화전용적복용강저료심편화응용전로적성본.문장급출료전하빙적탁복결구화용우양화분석적대신호해석공식화소신호모형.전로재TSMC적0.35μm혼합신호CMOS공예하설계완성.방진험증화류편측시적결과표명소제출적설계목표균이실현,소획결과여해석공식적계산고도일치,증명료모형이급분석방법적정학성.
To meet the demands for different supply voltage levels on SOC required by digital modules like CPU core and analog modules, a novel dual-output charge pump is proposed. The charge pump can output a step-up and a step-down voltage simultaneously with a high driving capability. The multiple gain pair technique was introduced to enhance its efficiency. The proposed co-use technology for capacitors and switch arrays reduced its cost. The charge pump was designed and fabricated in a TSMC 0.3Sμm mixed-signal CMOS process. A group of analytical equations were derived to model its static characteristics. A state-space model was derived to describe its small-signal dynamic behavior. Analytical predictions were verified by Spectre simulation and testing. The consistency of simulated results as well as test results with analytical predictions demonstrated the high precision of the derived analytical equations and the developed models.