一种低压改进型MOS电荷泵电路的设计

摘要

Due to the disadvantages of traditional charge pump for low output voltage using standard CMOS technology, the paper proposes a new basic charge transfer switch to improve the performance of MOS charge pump, based on pumping gain increasing circuit, the voltage gain of the charge pump can be improved by adding a third control signal at the output stage of the pump.In this paper, we use it as an energy wireless sensor circuit to pro-duce a higher output voltage.The simulation results show that the improved charge pump circuit for low-voltage e-quipment has a high pumping gain.The output voltage ( up to 8.5 V at 1.5 V) is higher than that achievable by any other charge pumps.%针对使用标准CMOS技术实现的传统电荷泵输出电压较低的不足，文中提出将基本的电荷转移开关进行改进的MOS电荷泵，在泵送增益增加电路的基础上，通过在泵的输出级增加第3个控制信号来提高电荷泵的电压增益，以得到更高的输出电压，将其作为无线传感器的能量收集电路。仿真结果表明，该改进型电荷泵电路适合于低电压设备，并具有较高的泵送增益。其输出电压在同类电荷泵中最高，在1.5V电源条件下，可高达8.5V。