摘要
针对传统电荷泵的阈值损耗与体效应问题,提出了一种采用两相非交叠时钟的高增益交叉耦合电荷泵。该电荷泵不受阈值压降、体效应等因素影响,开关管导通电阻较小,因而具有较高的电压增益与效率。电路采用SMIC 0.18μm CMOS工艺设计与仿真,结果表明,该电路的最低工作电压为0.9V,可驱动120μA的负载电流,电压增益高达4.8,最大电源效率达到70.18%。
In view of the traditional charge pump threshold loss and body effect, a high-gain cross-couple charge pump with two phase non-overlapping clock was proposed, which was not affected by the threshold voltage drop and body effect. On-resistance of each switch was also reduced to improve the gain and the power efficiency. The charge pump was designed and simulated in SMIC standard 0.18 μm CMOS process. The simulation results showed that the proposed charge pump could operate with a supply voltage down to 0.9 V and deliver a maximum output current of about 120 μA. It achieved a voltage gain of 4.8 and a power efficiency of 70.18%.
出处
《微电子学》
CAS
CSCD
北大核心
2015年第5期599-601,606,共4页
Microelectronics
基金
国家自然科学基金青年科学基金资助项目(61106021)
